TWI389755B - Method of manufacturing heat transfer board - Google Patents

Description

Heat transfer plate manufacturing method

The present invention relates to a method of manufacturing a heat transfer plate for a heat exchanger, a heating machine or a cooling machine.

The heat transfer plate, which is disposed in contact with or close to the object to be heated or cooled, is formed by penetrating a heat medium tube through which a heat medium such as a high temperature liquid or cooling water circulates, as a base member of the main body.

The method for producing the heat transfer plate is known, for example, as described in Document 1. Fig. 28 is a cross-sectional view showing a heat transfer plate formed by the method for producing a heat transfer plate of Document 1. The heat transfer plate 100 of Document 1 includes a base member 102 having a rectangular cover groove 106 opening to the surface and a groove 108 opening to the bottom surface of the cover groove 106, a heat medium tube 116 inserted into the groove 108, and an insertion The cover plate 110 of the cover groove 106. The heat transfer plate 100 is formed by friction stir welding along the flat portions J, J in which the two side walls of the cover groove 106 are flush with both side faces of the cover plate 110. Thereby, plasticized regions W, W are formed on the flat portions J, J of the heat transfer plate 100, respectively.

The heat transfer plate 100 formed by the method for producing a heat transfer plate of Document 1 is subjected to friction stir only from the surface side of the base member 102, and when the plasticized region W is shrunk due to heat shrinkage, a heat transfer plate W is generated. Skewed problem.

In the method of solving this problem, it is described in Document 2 that the upward bending is expected to occur, and therefore the method of imparting a predetermined downward bending of the metal member and then performing friction stirring is given.

Further, in the method for solving this problem, in Document 3, the metal member having the curvature is fixed to the friction stirrer, the rotary tool is pressed to the bending position of the metal member, and the pressing position is plastically flowed to remove the bending. Methods.

Document 1 Special Report No. 2004-314115

Document 2, JP-A-2001-87871

Document 3, JP-A-2006-102777

However, when the method of Document 2 is used, there is a problem that the work of bending the metal member in advance is complicated. Further, in the method of Document 3, when the region where the friction stir is performed is increased, the surface subjected to the friction stir is thermally contracted, and concave bending may occur on the surface, and the bending of the metal member may not be eliminated.

From such viewpoints, the present invention provides a method for producing a heat transfer plate, which can easily produce a heat transfer plate having high flatness by eliminating bending of the metal member.

A method of manufacturing a heat transfer plate according to the present invention for solving the problem includes: a cover groove closing process, wherein a cover plate is disposed in a cover groove formed around a groove, the groove being open to a surface side of the base member a joining process for causing the joining rotary tool to perform frictional agitation while moving relative to the flat portion of the side wall of the cover groove and the side surface of the cover plate; and correcting the work, using the correcting rotary tool from the back surface of the base member The side is subjected to friction stirring in which the volume of the plasticized region formed by the above-described correcting process is smaller than the volume of the plasticized region formed by the above-described joining process.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a tube insertion process for a heat medium, and a tube for inserting a heat medium into a groove, the groove being formed on a bottom surface of the cover groove, the cover groove being open to the base member a surface side; a cover groove closing process, wherein the cover plate is disposed in the cover groove; and the joining process causes the joining rotary tool to perform frictional agitation by moving relative to the flat portion of the side wall of the cover groove and the side surface of the cover plate; And a correction process for performing friction stir from the back side of the base member using a correcting rotary tool, wherein the volume of the plasticized region formed by the above-described correcting process is larger than the volume of the plasticized region formed by the joining process less.

According to this manufacturing method, since the friction stir is performed from the back side of the base member, the bending due to the friction stir on the surface is eliminated, and the flatness of the heat transfer plate can be easily improved. Moreover, since the volume of the plasticized region formed by the above-described correction engineering is smaller than the volume of the plasticized region formed by the above-described joining process, the flatness of the produced heat transfer plate can be further improved. This will be explained by way of example.

Moreover, in the above-described joining process, the plastic fluid material fluidized by the frictional heat flows into the gap portion, and the void portion is formed around the heat medium tube. According to this manufacturing method, the void portion is buried by flowing the plastic fluid into the void portion, and for example, the heat released from the heat medium tube can be efficiently transmitted to the surrounding base member and the lid. Thereby, a heat transfer plate having high heat exchange efficiency can be manufactured.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a cover insertion process, inserting a cover into a groove opening to a surface side of the base member; and a joining process for relatively moving the joining rotary tool along the groove While performing friction stir; and correcting the work, friction stir is performed from the back side of the base member using a correcting rotary tool, wherein the volume of the plasticized region formed by the above-mentioned correcting process is plasticized by the joint work. The volume of the area is still small.

Further, a method for manufacturing a heat transfer plate includes: a tube insertion process for a heat medium, inserting a tube for a heat medium into a groove opening to a surface side of the base member; inserting the cover plate into the groove, inserting the cover plate into the groove; a friction stirrer for causing the joining rotary tool to move relative to each other along the groove; and a correcting process for performing friction stir from the back side of the base member using the correcting rotary tool, wherein the plasticization formed by the above-described correcting process The volume of the region is smaller than the volume of the plasticized region formed by the above-described joining process.

According to this manufacturing method, since the friction stir is performed from the back side of the base member, the bending due to the friction stir on the surface is eliminated, and the flatness of the heat transfer plate can be easily improved. Moreover, since the volume of the plasticized region formed by the above-described correction engineering is smaller than the volume of the plasticized region formed by the above-described joining process, the flatness of the produced heat transfer plate can be further improved. This will be explained by way of example.

Further, the cover plate is pressed against the upper portion of the heat medium tube by the pressing force of the joining rotary tool, and at least the upper portion of the cover plate and the base member are plastically fluidized.

According to this manufacturing method, since the friction stir is performed by pressing the upper portion of the heat medium tube with the lid member, the gap around the tube for the heat medium can be reduced, and the heat exchange efficiency can be improved.

Further, in the above-described correction engineering, the planar shape of the locus of the orthodontic rotating tool is substantially point symmetrical with respect to the center of the base member. Further, in the above-described correction engineering, the planar shape of the locus of the correcting rotary tool is substantially similar to the shape of the outer edge of the base member. Moreover, in the above-described correction work, the planar shape of the locus of the above-described correcting rotary tool is substantially the same as the planar shape of the locus of the joining rotary tool formed on the surface side of the base member. Moreover, in the above-described correction work, the total length of the above-described correcting rotary tool is substantially the same as the total length of the trajectory of the joining rotary tool formed on the surface side of the base member.

According to this manufacturing method, it is possible to balance the curvature of the surface side and the back side of the heat transfer plate in a balanced manner, and to further improve the flatness of the heat transfer plate.

Further, the total length of the above-described correcting rotary tool is shorter than the total length of the trajectory of the joining rotary tool formed on the surface side of the base member. Moreover, the outer diameter of the shoulder portion of the above-described orthodontic rotary tool for the above-mentioned correction engineering is smaller than the outer diameter of the shoulder portion of the above-described joining rotary tool for joining work. Moreover, the length of the pin of the above-described correcting rotary tool for the above-mentioned correction engineering is shorter than the length of the pin of the above-described joining rotary tool for joining work.

According to this manufacturing method, since the volume of the plasticized region in the correction process is set to be lower than the volume of the plasticized region of the joining process, the flatness of the produced heat transfer plate can be improved.

Further, the thickness of the base member is 1.5 times or more the outer diameter of the shoulder portion of the joining rotary tool. Further, the thickness of the base member is three times or more the length of the pin of the joining rotary tool.

According to this manufacturing method, the flatness of the heat transfer plate can be improved because the base member has a sufficient thickness in accordance with the size of each portion of the joining rotary tool.

Further, in the case where the base member has a planar polygonal shape, the above-described correction works further includes a corner friction stirring process, and the corner portion of the base member is frictionally stirred by the correcting rotary tool.

According to this manufacturing method, the bending occurring at the corner portion of the base member is eliminated, and the flatness of the heat transfer plate can be improved.

Further, when the heater is provided in the heat medium tube, the annealing process is further included, and the heater is energized after the correction process to anneal the heat transfer plate.

According to this manufacturing method, the internal stress remaining in the plasticized region can be eliminated and the bending of the heat transfer plate can be eliminated.

Further, the surface of the base member is subjected to surface shaving after the above-described correcting process, and the depth of the surface shaving is larger than the length of the pin of the correcting rotary tool. According to this manufacturing method, a smooth shape can be formed on the back surface of the heat transfer plate.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a cover groove closing process, wherein the cover plate is disposed in the cover groove, the cover groove is formed around the groove, the groove is open on a surface side of the base member; a joining process of causing the joining rotary tool to perform frictional agitation while moving along a side wall of the cover groove and a flat portion of the side surface of the cover plate; and a correcting process, the back surface of the base member formed by the joining work The bending of the side protrusion is caused by the tensile stress generated on the surface side of the base member and the bending moment acts to correct it.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a tube insertion process for a heat medium, and a tube for inserting a heat medium into a groove, the groove being formed on a bottom surface of the cover groove, the cover groove being open to the base member a surface side; a cover groove closing process, wherein the cover plate is disposed in the cover groove; and the joining process causes the joining rotary tool to perform frictional agitation by moving relative to the flat portion of the side wall of the cover groove and the side surface of the cover plate; In the correction process, the bending formed by the joining process toward the back side of the base member is caused by the tensile stress generated on the surface side of the base member and corrected by the bending moment.

According to this manufacturing method, in the correction process, tensile stress is generated on the surface side of the base member to cause a bending moment, thereby correcting the curvature formed by the joining process toward the back side of the base member, thereby improving The flatness of the heat transfer plate makes it easier to manufacture the heat transfer plate.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a cover insertion process, inserting a cover into a groove opening to a surface side of the base member; and a joining process for relatively moving the joining rotary tool along the groove In the friction stirrage and the correction process, the bending which is formed by the joining process and which is convex toward the back side of the base member is caused by the tensile stress generated on the surface side of the base member and corrected by the bending moment.

Moreover, the method for manufacturing a heat transfer plate according to the present invention includes: a tube insertion process for a heat medium, a tube for inserting a heat medium into a groove opening to a surface side of the base member; a cover insertion process, and a cover plate inserted into the groove a joining process for frictionally stirring the joining rotary tool to move relative to each other along the groove; and a correcting process, wherein the bending formed by the joining process toward the back side of the base member is the base member The surface side generates tensile stress and is corrected by the bending moment.

According to this manufacturing method, in the correction process, tensile stress is generated on the surface side of the base member to cause a bending moment, thereby correcting the curvature formed by the joining process toward the back side of the base member, thereby improving The flatness of the heat transfer plate makes it easier to manufacture the heat transfer plate.

Further, the cover plate is pressed against the upper portion of the heat medium tube by the pressing force of the joining rotary tool, and at least an upper portion of the cover plate and the base member are frictionally stirred.

According to this manufacturing method, since the friction stir is performed by pressing the upper portion of the heat medium tube with the lid member, the gap around the tube for the heat medium can be reduced, and the heat exchange efficiency can be improved.

Further, in the above-described correcting process, the bending is corrected by pressing the base member or by rotating the roller on the base member or by impacting the base member by the impactor.

Further, in the above-described correction, the first auxiliary member that is in contact with the vicinity of the center of the back side of the base member is placed, and the second auxiliary member and the third auxiliary member that are in contact with the vicinity of the peripheral side of the surface of the base member are disposed. The member is placed in the state in which the first auxiliary member is placed on both sides, and the bending is corrected by pressing correction, impact correction, or roller correction.

According to this manufacturing method, the base member is forcibly applied with pressure from the state of being protruded toward the back surface side, and is protruded toward the surface side, and the base member can be bent by forcibly bending toward the opposite side of the bending. Moreover, by arranging the auxiliary member, the workability of the press correction, the impact correction, or the roller correction can be improved.

Further, each of the auxiliary members is a material having a lower hardness than the base member. According to this manufacturing method, when the pressing correction, the impact correction, or the roller correction are performed, the base member can be corrected without being damaged.

Further, an annealing process is included, and after the above-mentioned correcting process, the heat transfer plate is annealed. Further, when the heater is provided in the heat medium tube, the annealing process is further included, and the heater is energized after the correction process to anneal the heat transfer plate. According to this manufacturing method, the internal stress remaining in the plasticized region can be removed, and the bending of the heat transfer plate can be removed.

According to the method for producing a heat transfer plate of the present invention, a heat transfer plate having high flatness can be easily produced.

[First Embodiment]

The best mode for carrying out the invention will be described in detail with reference to the drawings. First, the heat transfer plate 1 manufactured by the manufacturing method of the present embodiment will be described. In the present embodiment, the case where the heat transfer plate 1 is used as a heat plate will be described.

As shown in FIGS. 1a and 1b, the heat transfer plate 1 mainly includes a thick plate-shaped base member 2 that is rectangular in plan view, a heat medium tube 20 that is embedded in the base member 2, and a recessed base member. The cover 10 of the slot of 2. The flat joints J1, J2 of the base member 2 and the cover 10 are joined by friction stirring, respectively. The heat transfer plate 1 is used by heating a micro heater or the like (not shown) that penetrates the heat medium tube 20.

The base member 2 has an effect of transferring heat of the heat medium flowing through the heat medium tube 20 to the outside, or an effect of transferring external heat to the heat medium flowing through the heat medium tube 20. As shown in Figs. 2a and 2b, the base member 2 is a rectangular parallelepiped in plan view, and in the present embodiment, an element having a thickness of 30 mm to 120 mm is used. The base member 2 is made of a friction stirable metal material such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, or magnesium alloy. On the surface Za of the base member 2, a cover groove 6 is recessed, and a groove 8 narrower than the cover groove 6 is recessed in the center of the bottom surface of the cover groove 6.

The cover groove 6 is a portion in which the cover 10 is disposed, and is formed in a horseshoe shape in plan view and continuously formed with a predetermined width and depth. The cover groove 6 has a rectangular shape in cross section and has side walls 6a, 6b which are vertically erected from the bottom surface 6c of the cover groove 6.

The groove 8 is a portion into which the heat medium tube 20 is inserted, and is formed across the entire length of the lid groove 6 at the central portion of the bottom surface 6c of the lid groove 6. The groove 8 is a U-shaped groove having an open upper cross section, and a semicircular bottom surface 7 is formed at the lower end. The width of the opening portion of the groove 8 is formed by a width A which is substantially the same as the diameter of the bottom surface 7. Further, the width of the cover groove 6 is formed by the groove width E, and the depth of the groove 8 is formed by the depth C.

The heat medium tube 20 is a cylindrical tube having a hollow portion 18 having a circular cross section as shown in Figs. 2a and 2b. In the present embodiment, the heat medium tube 20 is made of copper and has a horseshoe shape in plan view. The outer diameter B of the heat medium tube 20 is formed to be substantially equal to the width A of the groove 8 and the depth C of the groove 8, and when the heat medium tube 20 is disposed in the groove 8, the lower half of the heat medium tube 20 is formed. The upper end of the heat medium tube 20 and the bottom surface 6c of the lid groove 6 are at the same height while being in surface contact with the bottom surface 7 of the groove 8.

In the heat medium tube 20, in the present embodiment, although the micro heater is inserted, in another example, the heat medium such as cooling water, cooling gas, high temperature liquid, or helium gas is circulated to allow heat. The heat of the medium is transferred to the base member 2 and the cover 10 or the heat of the base member 2 and the cover 10 is transferred to the heat medium.

Further, in the present embodiment, the heat medium tube 20 may have a circular shape in cross section and may have an angular shape in cross section. Further, in the present embodiment, the heat medium tube 20 is made of copper, but other materials may be used. Further, the heat medium tube 20 is not necessarily designed, and the heat medium may flow directly into the groove 8.

As shown in FIGS. 2a and 2b, the cover plate 10 has a rectangular cross section which is substantially the same as the cross section of the cover groove 6 of the base member 2, and has an upper surface 11, a lower surface 12, a side surface 13a and a side surface 13b to form a flat surface. Watched as a horseshoe. In the present embodiment, the cover 10 is formed in the same composition as the base member 2. The thickness of the cover plate 100 is formed by the cover thickness H. Further, the width of the cover 10 is substantially the same as the groove width E of the cover groove 6. When the cover 10 is provided with the cover groove 6, the side faces 13a, 13b of the cover 10 are respectively faced with the side walls 6a, 6b of the cover groove 6. Contact or face-to-face with a fine gap. Further, the lower surface 12 of the cover 10 is in contact with the upper end of the heat medium tube 20.

Further, in the present embodiment, the groove 8 is in surface contact with the lower half of the heat medium tube 20, and the upper end of the heat medium tube 20 is in contact with the lower surface 12 of the cover 10, but is not limited thereto. Further, in the present embodiment, the cover groove 6, the groove 8, the cover 10, and the heat medium tube 20 have a horseshoe shape in plan view, but are not limited thereto, and are appropriately adapted to the use of the heat transfer plate 1. design.

Next, a method of manufacturing the heat transfer plate 1 will be described.

The method for manufacturing the heat transfer plate 1 of the present embodiment includes (1) a groove forming process, (2) a heat medium pipe insertion process, (3) a lid groove closing process, (4) a joining process, and (5) a correction process, ( 6) Annealing engineering.

(1) Groove forming engineering

In the groove forming process, as shown in Fig. 3a, the cover groove 6 and the groove 8 are formed on the surface Za of the base member 2 with a predetermined width and depth. The groove forming process is performed by cutting, for example, using a known end mill or the like.

(2) Tube insertion project for thermal media

In the heat medium tube insertion process, as shown in Fig. 3b, the heat medium tube 20 is inserted into the groove 8 formed in the groove forming process.

(3) Cover groove occlusion project

In the lid groove closing process, as shown in Fig. 3c, the lid 10 is placed on the lid groove 6 to close the lid groove 6. Here, in the surface in which the cover groove 6 is flush with the cover 10, the portion of the cover groove 6 that is in flat contact with the inner edge of the cover 10 is a flat portion J1, and the cover groove 6 is flush with the outer edge of the cover plate 10. Part is the flat joint J2.

(4) Joint engineering

In the joining process, the rotating tool F to be joined is friction stired along the flat joints J1 and J2. In the present embodiment, the joining process includes the first joining process of the friction stir welding portion J1 and the second joining process of the friction stir welding portion J2.

Here, the correcting rotary tool G used in the joining rotary tool F used in the joining process of the present embodiment and the correcting work to be described later will be described in detail.

As shown in FIG. 4a, the joining rotary tool F is made of a metal material such as a tool steel that is harder than the base member 2, and has a cylindrical shoulder portion F1 and a lower end surface F11 protruding from the shoulder portion F1. Stir pin (probe) F2. The size and shape of the joining rotary tool F are set in accordance with the material thickness of the base member 2, etc., but are at least larger than the correction four-rotation tool G (see FIG. 4b) used in the correction engineering described later.

The lower end surface F11 of the shoulder portion F1 is a portion that presses the plastic fluidized metal to prevent it from being scattered toward the periphery, and in the present embodiment, it has a concave shape. Although the size of the outer diameter X ₁ of the shoulder portion F1 is not particularly limited, in the present embodiment, it is larger than the outer diameter Y ₁ of the shoulder portion G1 of the correcting rotary tool G.

The stirring pin F2 hangs from the center of the lower end surface F11 of the shoulder portion F1, and in the present embodiment, a truncated cone shape having a small distal end is formed. Further, a stirring blade that is spirally formed is formed on the circumferential surface of the stirring pin F2. The size of the outer diameter of the stirring pin F2 is not limited. In the present embodiment, the maximum outer diameter (upper end diameter) X _{2 is} larger than the maximum diameter (upper diameter) Y ₂ of the stirring pin G2 of the correcting rotary tool G. And the minimum outer diameter (lower end diameter) X _{3 is} larger than the minimum outer diameter (lower end diameter) Y _{3 of the} stirring pin G2. The length L _{A of the} stirring pin F2 is larger than the length L _B (see FIG. 4b) of the stirring pin G2 of the correcting rotary tool G.

Here, the thickness t of the base member 2 shown in Fig. 4a is preferably three times or more the length L _A of the stirring pin F2. Further, the thickness t of the base member 2 is preferably 1.5 times or more the outer diameter X ₁ of the shoulder portion F1. According to the above setting, the thickness of the joining rotary tool F can sufficiently reduce the thickness of the base member 2, and the bending caused by the friction stir can be reduced.

The correcting rotary tool G shown in Fig. 4b is made of a metal material such as a tool steel that is harder than the base member 2, and includes a cylindrical shoulder portion G1 and a stirring pin protruding from the lower end surface G11 of the shoulder portion G1. (Probe) G2.

The lower end surface G11 of the shoulder G1 is formed in a concave shape similarly to the joining rotary tool F. The stirring pin G2 hangs from the center of the lower end surface G11 of the shoulder portion G1. In the present embodiment, a truncated cone having a small tip end is formed. Further, on the circumferential surface of the stirring pin G2, a stirring blade that is spirally formed is formed.

In the first joining process, as shown in Fig. 5, Figs. 6a and 6b, friction stir is performed along the flat portion J1 of the base member 2 and the cover plate 10.

First, the start position S _{M1 is} set to an arbitrary position on the surface Za of the base member 2, and the stirring pin F2 of the joining rotary tool F is pressed (pressed) by the base member 2. In the present embodiment, the start position S _{M1 is} located in the vicinity of the outer edge of the base member 2, and is set in the vicinity of the flat portion J1. After a part of the shoulder portion F1 of the joining rotary tool F comes into contact with the surface Za of the base member 2, the joining rotary tool F is relatively moved toward the starting point s1 of the flat joint portion J1. Then, as shown in Fig. 6, after reaching the starting point s1, the joining rotary tool F is moved without being disengaged, and is moved along the flat portion J1 in this state.

After the joining rotary tool F reaches the end point e1 of the flat portion J1, the joining rotary tool F is moved to the start position S _M1 side in this state, and the joining rotary tool F is released at the end position E _M1 set at an arbitrary position. .

Further, the start position S _M1 , the start point s1, the end position E _{M1 ,} and the end point e1 are not limited to the position of the embodiment, but are preferably located in the vicinity of the outer edge of the position base member 2 and in the vicinity of the flat portion J1.

Next, in the second joining process, as shown in Figs. 6b and 6c, friction stir is performed along the flat portion J2 of the base member 2 and the cover plate 10.

First, the start position S _{M2 is} set to an arbitrary position h of the surface Za of the base member 2, and the stirring pin F2 of the joining rotary tool F is pressed into the base member 2 (pressing). After a part of the shoulder portion F1 of the joining rotary tool F comes into contact with the surface Za of the base member 2, the joining rotary tool F is relatively moved toward the starting point s2 of the flat joint portion J2. Then, after reaching the starting point s2, the joining rotary tool F is moved along the flat portion J2 without being disengaged.

After the joining rotary tool F reaches the end point e2 of the flat portion J2, the joining rotary tool F moves to the point f side in this state, and the joining rotary tool F is disengaged at the end position E _M2 set at the point f.

Further, the start position S _M2 and the end position E _M2 are not limited to the position of the embodiment, and are preferably corner portions of the outer edge of the base member 2. Thereby, when the hole is left at the end position E _M2 , the corner portion can be cut and removed.

As shown in Fig. 6c, the surface plasticized region W1 (W1a, W1b) is formed along the flat portion J1 and the flat portion J2 by the first joining process and the second joining process. Thereby, the heat medium tube 20 is sealed by the base member 2 and the lid 10. Further, as shown in Fig. 1b, in the present embodiment, the depth of the surface plasticized region W1 is substantially equal to the height of the side walls 6a and 6b (see Fig. 2b) of the cover groove 6, so that the flat portion J1 can be used. The whole of the depth direction of the flat portion J2 is friction stir. Thereby, the airtightness of the heat transfer plate 1 can be improved.

Here, Fig. 7 is a perspective view of the heat transfer plate 1 after the joining process of the embodiment. The heat transfer plate 1 forms a surface plasticized region W1 by a joining process. The surface plasticized region W1 is shrunk by heat shrinkage, and on the surface Za side of the heat transfer plate 1, compressive stress acts from the corner portion side to the center side of the base member 2. Thereby, the heat transfer plate 1 is recessed on the side of the surface Za, and there is a possibility of bending. In particular, in the points a to j shown by the surface Za of the heat transfer plate 1, the influence of the bending at the points a, c, f, and h of the four corners of the heat transfer plate 1 tends to be remarkable. Further, the point j indicates the center point of the heat transfer plate 1.

(5) Correction engineering

In the correction work, friction stir is performed from the back surface Zb of the base member 2 using the correcting rotary tool G. The correction engineering is a work performed to eliminate the bending generated in the above joint work. In the present embodiment, the correction project includes a projecting material arrangement project in which the protruding members are disposed, and a corrective friction stir process for frictionally stirring the back surface Zb of the base member 2.

In the projecting material arrangement project, as shown in Fig. 8, the projecting material 31 for setting the start position and the end position of the corrective friction stir welding process to be described later is disposed. In the present embodiment, the protruding member 31 has a rectangular parallelepiped shape and is formed of the same composition as the base member 2. The protruding member 31 is pre-joined by welding both side faces of the protruding member 31 and the side surface c of the base member 2. The surface of the protruding member 31 is flush with the back surface Zb of the base member 2.

In the corrective friction stir process, as shown in Figs. 8a and 8b, the back surface Zb of the base member 2 is frictionally stirred using the correcting rotary tool G. In the corrective friction stir process, friction stir is performed in the same amount of press-in as the joining process. The path of the corrective friction stir process is set in the present embodiment around the center point j' and the back side plasticized region W2 formed by the friction stir process is set to be radially relative to the center point j'. Further, the point a' and the point b' are points corresponding to the back side Zb side of the point a, the point b (see Fig. 7) on the surface Za side of the base member 2, respectively.

In the corrective friction engineering, as shown in Fig. 8a, first, the start position S _M2 is set on the surface of the protruding member 31, and the stirring pin G2 of the correcting rotary tool G is pressed into the protruding member 31 (pressing). After a part of the shoulder G1 of the correcting rotary tool G comes into contact with the protruding member 31, the correcting rotary tool G is relatively moved toward the base member 2. Then, the correcting rotary tool G is frictionally stirred by relative movement, so that the vicinity of the point f', the point a', the point c', and the point h' of the back surface Zb of the base member 2 is convex as viewed from the plane, and The location g', the location d' location b', and the location e' are concave from the plane. That is, as shown in FIG. 8b, the back surface plasticized region W2 is formed in line symmetry with respect to the center line (dot line) of the base member 2. In the present embodiment, the start position S _M2 and the end position E _M2 are provided on the protruding member 31, and friction stir is performed in a continuous trajectory. Thereby, the friction stir can be efficiently performed, and the protruding material 31 is cut off after the end of the corrective friction stirring process.

Further, in the present embodiment, the trajectory of the correcting rotary tool G, that is, the shape of the back side plasticized region W2 is formed around the center point j' and is slightly radial to the center point j', but is not limited. herein. The change in the trajectory of the correcting rotary tool G will be described later.

Further, in the present embodiment, the length of the trajectory of the orbiting rotary tool G (the length of the back side plasticized region W2) is shorter than the length of the trajectory of the joining rotary tool F (the length of the surface plasticized region W1). . That is, the degree of machining of the orthodontic rotating tool G in the correction process is set to be smaller than the degree of machining of the joining rotary tool F in the joining process. Thereby, the flatness of the heat transfer liner 1 can be improved. The reason for this is explained by way of example. Here, the degree of work means the volume of the plasticized region formed by friction stir.

Further, in the correction engineering of the present embodiment, the protruding material is disposed, but the protruding material may be provided by the friction stirring path in the correct friction stir welding process.

(6) Annealing engineering

In the annealing process, the internal stress of the heat transfer plate 1 is removed by annealing the heat transfer plate 1. In the present embodiment, the heat medium tube 20 is energized, for example, by a micro heating tube, and annealed. Thereby, the internal stress of the heat transfer plate 1 can be removed, and deformation of the heat transfer plate 1 can be prevented. According to the manufacturing method of the present embodiment described above, by the heat shrinkage of the joining process and the bending of the heat transfer plate 1, the bending of the surface Za is eliminated by friction stir on the back surface Zb of the base member 2. The flatness of the heat transfer plate 1 can be easily improved. In other words, the back surface plasticized region W2 formed on the back surface side Zb of the base member 2 is shrunk by heat shrinkage, and the compression reflection force acts on the back side Zb side of the heat transfer plate 1 from the corner portion side of the base member 2 toward the center side. Thereby, the bending formed by the main joining process is eliminated, and the flatness of the heat transfer plate 1 can be improved.

Moreover, in the correction engineering of this embodiment, since the correction rotary tool G is moved in a continuous trajectory, work efficiency can be improved.

[Second embodiment]

In the first embodiment described above, and the friction stir in the joining process, a void is formed around the heat medium tube 20 (see Fig. 1). Here, in the second embodiment shown in Figs. 9a and 9b, the plastic flow flows into the gap formed around the heat medium tube 20 to bury the gap.

That is, as shown in Fig. 9, the width of the cover groove 6 and the cover 10 is set smaller than that of the first embodiment, and the flat portion J1 and the flat portion J2 are located in the vicinity of the heat medium tube 20. Then, the frictional agitation is performed by pressing the joining rotary tool F at a predetermined depth, so that the plastic flow can flow into the gap portion Q formed around the heat medium tube 20. As a result, as shown in Fig. 9b, the periphery of the heat medium tube 20 is sealed with plasticized metal, and a heat transfer plate 1' having high heat transfer property can be formed.

Further, the degree of flow of the plastic fluid in the void portion Q can be set in accordance with the size and the amount of press of the joining rotary tool F, the shape of the lid groove 6 and the lid 10, and the like. Since other manufacturing processes are substantially the same as those of the first embodiment, detailed descriptions thereof will be omitted.

[Third embodiment]

Fig. 10 is a cross-sectional view showing a third embodiment. The heat transfer plate 1'' of the third embodiment is the same as the heat transfer plate 1 of the first embodiment except that it does not have the features of the heat medium tube 20 of the first embodiment. As in the case of the heat transfer plate 1', the heat medium is directly supplied into the groove 8 without providing a tube for the heat medium. The method of manufacturing the heat transfer plate 1'' is the same as that of the first embodiment except that the heat medium tube is not inserted, and the description thereof is omitted.

[Fourth embodiment]

Next, a description will be given of the fourth embodiment. In the description of the fourth embodiment, the features overlapping with the first embodiment will be briefly explained. In the first embodiment described above, the heat transfer plate is formed by friction stirrability along the both sides of the cover plate 10, such as the surface plasticized region W1, to form a heat transfer plate, as in the fourth embodiment, The width of the cover plate is set to be small, and a plasticized region is formed to form a heat transfer plate.

The heat transfer plate 41 manufactured by the fourth embodiment, as shown in FIGS. 11 and 12, mainly includes a base member 2 which is a square plate as viewed in plan, and a heat medium which is recessed in the base member 2. The tube 42 is inserted into the cover 42 recessed in the groove of the base member 2. The upper surface of the cover 42 is joined by frictional agitation of one.

As shown in FIGS. 12 and 13, the groove 43 is continuously formed from the side surface Zc of one side of the base member 2 to the side surface Zd of the other side of the opposite side. The recess 43 is a portion into which the heat medium tube 21 and the cover 42 are inserted. The groove 43 is formed in a U-shape as viewed in cross section and has a serpentine shape in plan. As shown in Fig. 13, the width A' between the gauges 43a and 43b of the recess 43 is substantially equal to the outer portion of the heat medium tube 20. Further, the width A' of the groove 43 is formed to be smaller than the outer diameter X ₁ of the shoulder portion F1 of the joining rotary tool F. The depth of the groove 43 is formed at a depth C'.

The heat medium tube 21 is a tube into which the groove 43 is inserted, and is formed to penetrate from the side surface Zc of one side of the base member 2 to the side surface Zd of the other side. The heat medium tube 21 is in a serpentine shape in plan view, and assumes a shape substantially the same as the shape of the groove 43 viewed in plan.

The cover 42 is a member having a rectangular cross section and a serpentine shape in plan view, which is a member inserted into the recess 43. The cover 42 has side faces 42a, 42b, an upper face 42c, and a lower face 42d. When the cover 42 is inserted into the recess 43, the upper surface 42c is flush with the surface Za of the base member 2, and the side faces 42a, 42b of the cover are in surface contact with the side walls 43a, 43b of the recess 43, respectively, or with a fine gap. Opposite.

Next, a description will be given of a manufacturing method of the fourth embodiment.

The manufacturing method of the heat transfer plate of the fourth embodiment includes (1) groove forming engineering (2) heat medium tube insertion engineering, (3) cover insertion engineering, (4) joining engineering, (5) correction engineering, ( 6) Surface cutting engineering.

(1) Groove forming engineering

In the groove forming process, as shown in Figs. 12 and 13, the groove 43 is formed at a predetermined width and depth on the surface Za of the base member 2. The groove forming process is performed by cutting, for example, using a known end mill or the like.

(2) Tube insertion project for thermal media

In the heat medium tube insertion process, as shown in Figs. 12 and 13, the heat medium tube 21 is inserted into the groove 43 formed in the groove forming process.

(3) Cover insertion project

The cover insertion process, as shown in Figs. 12 and 13, inserts the cover 42 into the recess 43 to close the recess 43. Here, on the flat surface of the recess 43 and the cover 42, the portion of the side wall 43a of one side of the recess 43 that is flush with the side surface 42a of one side of the cover 42 is a flat portion J3, and the other side of the recess 43 The portion of the side surface 43b that is flush with the side surface 42b of the other side of the cover 42 is a flat portion J4.

(4) Joint engineering

In the joining process, frictional agitation is performed along the cover 42 (groove 43) using the joining rotary tool F. In the present embodiment, the joining work includes a projecting material arrangement project in which the protruding members are disposed, and a main joining process in which friction stir is performed.

In the projecting material arrangement project, as shown in Fig. 14a, a pair of projecting members 33 and 34 are disposed from the side surface Zc of one side of the base member 2 and the side surface Zd of the other side. Both side faces of the protruding members 33, 34 and the base member 2 are pre-joined by welding.

In the main joining process, as shown in Figs. 14a and 14b, friction stir is performed along the cover 42 (groove 43). The joining rotary tool F is press-fitted to the start position S _M4 set to the protruding member 33, and after the shoulder portion F1 contacts the base member 2, the joining rotary tool F is relatively moved along the cover 42 to continuously rub Stirring is set to the end position E _{M4 of the} protruding member 34. As shown in Fig. 14b, the outer diameter X1 of the shoulder F1 of the joining rotary tool F is set larger than the width A' of the groove 43, when the joining rotary tool F is made along the width direction of the cover 42 When the center moves, the flat portions J3 and J4 are plasticized. As described above, according to the present embodiment, the frictional agitation of the flat portions J3 and J4 can be performed by setting only one path, and the work procedure can be largely omitted as compared with the first embodiment. Further, when the friction stir is performed, the bonding rotary tool F presses the cover 42 and the heat medium tube 21 is also pressed and deformed. Thereby, the heat exchange rate of the heat transfer plate 41 can be improved by reducing the gap portion Q formed around the heat medium tube 21.

Moreover, the projecting material is cut off from the base member 2 after the end of the main joining process.

Here, Fig. 15a and Fig. 15b are diagrams of the heat transfer plate 41 after the main joining process of the embodiment. The heat transfer plate 41 is formed by a joining process to form a surface plasticized region W3. Since the surface plasticized region W3 is shrunk by heat shrinkage, the heat transfer plate 41 may be concavely formed on the surface Za side and bent in the reverse direction. In particular, among the points a to j of the surface Za of the heat transfer plate 41, the points a, c, f, and h corresponding to the four corners of the heat transfer plate 41 tend to be significantly conspicuous. Further, the point j indicates the center point of the heat transfer plate 41.

(5) Correction engineering

In the correction work, friction stir is performed from the back surface Zb of the base member 2 using the correcting rotary tool G. The correction works are performed to eliminate the bending caused by the above joint work. In the present embodiment, the corrective engineering includes a corrective friction stir process for performing radial friction stir and a corner friction stir process for friction stir of the step of the base member 2.

In the corrective friction stir process, as shown in Fig. 16a, frictional agitation is performed to form a radially plasticized region through the center point j'. That is, the path of the friction stir is set so that the line connecting the point a' and the point h' is on a straight line connecting the point d' and the point e', and the line connecting the point f' and the point c', The starting position (S _M5 , S _M6 , S _M7 , S _M8 ) and the ending position (E _M5 , E _M6 , E _M7 , E _M8 ) of the friction stir are set on the line connecting the point g' and the point b', respectively. The distance from each start position to the center point j' is the same as the distance from the center point j' to each end position.

After setting the path of the friction stir of the friction stir mixing process, the correcting rotary tool G is pressed into each start position, and the correcting rotary tool G is moved along each path (straight line). In the corrective friction stir process, friction stir is performed with a press amount that is approximately equal to the joint work. As shown in Fig. 16b, the back side plasticized regions W41 to W44 formed by the corrective friction stir process are radially expanded in eight directions with respect to the center point j.

In the corner friction stirring process, as shown in Fig. 16b, the main friction stir is performed at each corner portion of the base member 2 at the point a', the point c', the point f', and the point h'. In other words, the friction stirring start position S _M9 and the end position E _{M9 are} set on the side 2a of the corner portion corresponding to the point a', and the return position S _{R9 is} set on the other side 2b side. Then, the correcting rotary tool G is pressed into the start position S _M9 and moved toward the return position S _R9 , and then folded back at the folded-back position S _R9 , and the correcting rotary tool G is disengaged at the end position E _M9 . The same project can also be performed at each corner of the location c', the location f', and the location h'. According to the corner friction stirring process, since the corner portion of the base member 2, which is particularly curved, can be subjected to a critical correction work, the flatness of the heat transfer plate 41 can be further improved.

In the present embodiment, the trajectory of the correcting rotary tool G is orthogonal to the twisted pair at each corner portion, but is not limited thereto. Consider the size of the corner bend, but the path where the friction stir is set locally. Further, the back plasticized region W45, the back plasticized region W47, the back plasticized region W46, and the back plasticized region W48 which are formed by the corner friction stirring process are point-symmetric with respect to the center point j', respectively. Thereby, the bending of the surface Za side and the back surface Zb side of the heat transfer plate 41 is balanced, and the flatness of the heat transfer plate 41 can be improved.

(6) Surface cutting engineering

In the surface shaving process, the back surface Zb of the heat transfer plate 41 is surface-cut using an end mill or the like. As shown in Fig. 16b, a hole (not shown) of the correcting rotary tool G is produced on the back surface Zb of the heat transfer plate 41, a groove (not shown) which is pressed by the respective rotary tools, and a burr or the like. Therefore, smoothing can be formed on the back surface Zb of the heat transfer plate 41 by performing the surface cutting process. In the present embodiment, as shown in Fig. 17, the thickness Ma of the surface cutting process is set to be larger than the thickness Wa of the back surface plasticized region W42. Thereby, the purpose of uniformity of the properties of the base member 2 can be achieved by removing the plasticized regions W41 to W44 formed on the back surface. Further, since the back surface plasticized region W42 and the like expose the back surface Zb, the design is also preferable.

Further, in the present embodiment, the thickness of the surface cutting process is set to be larger than the thickness of the back surface plasticized region, but the thickness is not limited thereto. The thickness of the surface cutting process can be set to be larger than the length of the stirring pin G2 of the correcting rotary tool G.

In the present embodiment, the correcting work is performed using the correcting rotary tool G including the stirring pin G2. However, the correcting work may be performed using the correcting rotary tool that does not include the stirring pin G2. According to this rotary tool, since the depth of the back surface plasticized region can be made shallow, the thickness of the face cutting can be reduced. Thereby, the loss of the base member 2 is reduced by reducing the portion of the surface cutting, and the cost can be reduced.

According to the fourth embodiment described above, the heat contraction caused by the joining process and the heat transfer plate 41 are bent, and the friction generated on the surface Za is eliminated by friction stir on the back surface Zb of the base member 2. Easily improve flatness. In other words, the back surface plasticized regions W41 to W44 formed on the back surface Zb of the base member 2 are contracted by heat shrinkage, and the compressive stress acts on the back side Zb side of the heat transfer plate 41 from the respective corner portions of the base member 2 toward the center side. Thereby, the bending formed by the main joining process is eliminated, and the flatness of the heat transfer plate 41 can be improved.

Further, according to the fourth embodiment, the flat portions J3 and J4 of the cover 42 and the recess 43 are frictionally stirred by the primary movement of the joining rotary tool F, so that it can be significantly larger than the first embodiment. Omit the work procedures. Further, with respect to the back surface Zb of the base member 2, by performing the corner friction stir process, it is possible to perform a key correction process on the corner portion which is particularly curved, and the flatness of the heat transfer plate 41 can be further improved.

[Fifth embodiment]

Figure 18 is a cross-sectional view showing a heat transfer plate of a fifth embodiment. The heat transfer plate 51 of the fifth embodiment is the same as the heat transfer plate 41 of the fourth embodiment except that it does not have the features of the heat medium tube. As shown by the heat transfer plate 51, the heat medium can flow directly into the recess 43. The method of manufacturing the heat transfer plate 51 is the same as that of the fourth embodiment except that the heat medium tube 21 is not inserted, and the description thereof is omitted.

[Sixth embodiment]

Fig. 19 is a plan view showing the surface side of the heat transfer plate of the sixth embodiment. Fig. 20 is a plan view showing the back side of the heat transfer plate of the sixth embodiment. In the sixth embodiment shown in Fig. 19, the friction stirrer path of the correction engineering is set so that the plasticized regions formed on the surface Za side and the back surface Zb side of the heat transfer plate have substantially the same shape. In the sixth embodiment, as in the fourth embodiment, the heat medium tube 53 and the cover 54 are inserted into the grooves formed in the surface of the base member 2 to form a plasticized region W60 to be joined. In the sixth embodiment, the features overlapping with the fourth embodiment are omitted.

The heat transfer plate 61 shown in Fig. 19 mainly includes a base member 2 having a central opening portion 2, a heat medium tube 53 embedded in a groove (not shown) cut out on the surface Za of the base member 2, and a clogging concave. The cover plate 54 of the slot.

The heat medium tube 53 is embedded in the inside of the base member 2 in a cross shape as viewed in plan. One end and the other end of the heat medium tube 53 are exposed to the opening 52 of the base member 2. Heat is supplied from one end of the heat medium tube 53 appearing in the opening portion 52, and heat is discharged from the other end to transfer heat to the base member 2.

The flat portion of the cover plate 54 and the base member 2 is joined by friction stirrability by performing the same work as the fourth embodiment with the joining rotary tool F. Thereby, a surface-shaped plasticized region W60 having a substantially cross shape is formed on the surface Za of the base member 2.

On the other hand, as shown in Fig. 20, the back surface Zb of the heat transfer plate 61 is the same as the surface Za, and the back surface Zb of the heat transfer plate 61 is the same as the surface Za, and forms a back-side plasticized region W61 which is viewed in a cross shape. The start position S _M and the end position E _M of the friction stir in the correction work are set at an arbitrary point of the base member 2. In the correcting process, the same pressing and bright friction stirring as that of the joining process is performed. Further, the back plasticized region W61 is friction stirlable by a continuous trajectory using the correcting rotary tool G.

As shown in the heat transfer plate 61 of the sixth embodiment, the path of the friction stir can be set so that the surface Za formed on the heat transfer plate 61 and the surface plasticized region W60 and the back plasticized region W61 of the back surface Zb are substantially the same shape. . According to the joint work and the correction work, the shape of the plasticized region formed on the surface Za side and the back surface Zb side of the heat transfer plate 61 is substantially the same, and the bending of the heat transfer plate 61 is balanced and the flatness can be improved.

Further, according to the sixth embodiment, the length of the trajectory of the friction stir performed on the surface Za side of the base member 2 is substantially equal to the length of the trajectory of the friction stir performed on the back surface Zb side, but the correcting rotary tool G is formed. It is smaller than the joining rotary tool F, and the machining degree of the correction engineering is smaller than the machining degree of the joining work.

Further, the correction engineering is not limited to the path of the friction stir of the above-described first to sixth embodiments, and can be set to various paths. The following is a description of other types of paths for friction stir in corrective engineering.

[First Modification to Sixth Modification]

The path of the friction stir of the correction engineering is not limited to the above-described type, and the following types are also possible. 21 is a plan view of the back side of the heat transfer plate, (a) is a first modification, (b) is a second modification, (c) is a third modification, and (d) is a fourth modification, ( e) is a fifth modification, and (f) is a sixth modification.

The trajectories (back plasticized region W2) of the correcting rotary tool of the first modification and the second modification shown in Figs. 21a and 21b are formed around the center point j' of any of the base members 2. Further, the first modification forms an outer shape similar to that of the base member 2. Further, as in the second modification shown in Fig. 21b, a lattice shape may be formed.

The correction rotary tool path (back plasticized region W2) of the third modification and the fourth modification shown in Figs. 21c and 21d is formed radially by the center point j' of any of the base members 2. The third modification of Fig. 20c includes a plurality of loops starting from the center point j as the starting point and ending point, and forming point symmetry with respect to the center point j'. Moreover, since the third modification is formed by a continuous trajectory, work efficiency can be improved. The fourth modification shown in Fig. 20d is parallel to the diagonal of the base member 2 while passing through the center point j'.

The trajectory (back plasticized region W2) of the correction rotary tool of the fifth modification and the sixth modification shown in Figs. 20e and 20f is divided into four regions by a straight line passing through the center point j', and the same shape is four. The trajectories are formed independently, while clamping the center point j' and tilting so that the trajectories of the opposite directions form point symmetry independently. As long as the four tracks have the same shape, any shape is acceptable.

As described above, the correction works may correspond to the trajectory of the friction stir of the joint work performed by the base member 2, but the trajectory of the friction stir is locally set.

Further, in the present embodiment, the base member 2 is described as being square in plan view, but other shapes may be used.

[Seventh embodiment]

In the above-described correction work of the first embodiment or the sixth embodiment, the back surface Zb of the base member 2 is subjected to friction stir using the correcting rotary tool G to correct the bending, but the invention is not limited thereto. In the correction engineering of the seventh embodiment, the bending moment generated by the tensile tension acts on the surface Za side of the base member 2 from the back surface Zb of the heat transfer plate 1 (base member 2), and the correction is formed by the above joint work. The heat transfer plate 1 is curved. In the correction engineering of this embodiment, it is possible to carry out one of three methods of pressing correction, impact correction, and roller correction described below.

Fig. 22 is a perspective view showing a preparation stage of the push correction in the seventh embodiment. Fig. 23 is a side view showing the pressing correction of the seventh embodiment, Fig. 23a is a view before pressing, and Fig. 23b is a view showing pushing. Fig. 24 is a plan view showing a pressing position of the pressing correction in the seventh embodiment. Fig. 25 is a side view showing the roller correction of the seventh embodiment, wherein Fig. 25a is a perspective view, Fig. 25b is a side view before pushing, and Fig. 25c is a side view in pushing. In the correction engineering of the seventh embodiment, the heat transfer plate 1 of the first embodiment is used for explanation.

(push correction)

After the joining process is carried out in the same manner as in the first embodiment described above, the burrs generated by the friction stir are removed, and as shown in Fig. 22, the back surface Zb of the heat transfer plate 1 is turned upward and reversed, on the back side Zb. The center point j' (see Fig. 7b) is provided with a plate-shaped first auxiliary member T1. Further, a plate-shaped second auxiliary member T2 and a third auxiliary member T3 are disposed at four corners on the surface Za side of the heat transfer plate 1. In other words, the second auxiliary member T2 and the third auxiliary member T3 are disposed on both sides while sandwiching the first auxiliary member T1. The first auxiliary member T1 to the third auxiliary member T3 are elements that serve as abutting members or pedestals when the pressing correction is performed, and also to avoid damage to the elements of the heat transfer plate 1. The first auxiliary member T1 or the third auxiliary member T3 is bent to the opposite side to be curved in accordance with the mechanical properties of the heat transfer plate 1 and the curvature of the curvature, and is corrected to be curved, and is set to have a sufficient thickness.

After the respective auxiliary members are provided, as shown in Figs. 23a and 23b, the known pressing device P is used to press the back surface Zb of the heat transfer plate 1. The punch Pa of the pressing device P is pressed against the first auxiliary member T1 and pressed at a predetermined pressing force. When the pressure is applied to the heat transfer plate 1 by the pressing device P, as shown in FIGS. 23a and 23b, the first auxiliary member T1 is pressed against the lower side of the heat transfer plate 1, the second auxiliary member T2 and the third The auxiliary member T3 presses both end sides of the heat transfer plate 1 on the upper side, and a bending moment acts on the heat transfer plate 1. Since the bending moment causes the tensile stress to be generated on the surface Za side of the heat transfer plate 1, the heat transfer plate 1 is forcibly bent to the lower side.

The pressing force of the pressing device is appropriately set according to the thickness and material of the heat transfer plate 1. As shown in Fig. 23b, the surface Za side of the heat transfer plate 1 protrudes downward, and the bending moment acts to pull on the surface Za. Stretch the tension.

Further, in the present embodiment, as shown in Fig. 24, not only the center point j' but also the vicinity of the point b', the point d', the point e', and the point g' of the back surface Zb of the heat transfer plate 1 are performed. Push. The first auxiliary member T1 is disposed at the position H' including the intermediate point of each side of the back surface Zb of the heat transfer plate 1, the position d' point e', and the position H', and is pushed by the pressing device P. Pressure. Thereby, the heat transfer plate 1 can be corrected in a balanced manner, and the flatness can be improved.

Further, although the position to be pressed is set at five positions in the present embodiment, the present invention is not limited thereto, and can be appropriately set in accordance with the bending of the heat transfer plate 1 by the joining process.

(impact correction)

Next, explain the impact correction. For impact correction, the specific illustration is omitted because it approximates the correction of the push. The term "impact correction" refers to the correction of the bending caused by the heat transfer plate by an impact tool such as a hammer. The impact correction is substantially the same as the pressing correction except that the impact device such as a hammer is used instead of the impact of the pressing device P on the heat transfer plate 1.

In the impact correction, after the auxiliary member is disposed, the heat transfer plate 1 is impacted from the back surface of the heat transfer plate 1 by an impact tool such as a plastic hoe, after the auxiliary member is disposed, with reference to Figs. 23 and 24 . When the heat transfer plate 1 is impacted, since the tensile stress is generated on the surface Za side of the heat transfer plate 1, the heat transfer plate 1 is forcibly bent downward (see Fig. 23b). Thereby, the curvature of the heat transfer plate 1 is corrected to become flat. Further, similarly to the pressing correction, the position H2 to H5 (see Fig. 24) of the back surface Zb of the heat transfer plate 1 is required to be applied, and the heat transfer plate 1 can be balanced and corrected.

The impact correction can be easily performed by omitting the procedure of preparing the pressing device or the like as compared with the pressing correction. Further, the impact correction is effective for the small and thin heat transfer plate 1 due to the ease of work. Moreover, it is preferable to remove the burrs generated by the impact after the end of the impact correction. Further, the impact tool is not particularly limited as long as it can impact the heat transfer plate 1, and is preferably, for example, a plastic hoe.

(roller correction)

Next, the roller correction will be described. After the joining process is performed in the same manner as in the first embodiment, the burrs generated by the friction stir are removed, and as shown in Fig. 25a, the back surface Zb of the heat transfer plate 1 is reversed upward, and the long plate shape is The auxiliary member T1 is disposed at a center point j' including the back surface Zb (see FIG. 7b) and is parallel to the longitudinal direction. Further, the second auxiliary member T2 and the third auxiliary member T3 having a long plate shape are disposed on the edge portion of the heat transfer plate 1 on the surface Za side, and are parallel to the longitudinal direction. That is, the second auxiliary member T2 and the third auxiliary member T3 are disposed on both sides by sandwiching the first auxiliary member T1.

Then, on the upper side of the first auxiliary member T1, the roller R1 is disposed orthogonally to the first auxiliary member T1, and the lower side of the second auxiliary member T2, T3 is orthogonal to the second auxiliary member T2 and the third auxiliary member T3. The roller R2 is configured. In other words, as shown in Fig. 25b, the heat transfer plate 1 is disposed between the rollers R1 and R2 in a convex state on the upper side, and is guided by the rollers R1 and R2 via the first auxiliary member T1 to the third auxiliary member T3. Clamped.

The first auxiliary member T1 to the third auxiliary member T3 serve as abutting members for performing roller correction, and serve as members for avoiding damage to the heat transfer plate 1. The first auxiliary member T1 to the third auxiliary member T3 may be made of a material softer than the heat transfer plate 1, and for example, an aluminum alloy, a hard rubber, a plastic, or a wood may be used.

Here, when the rollers R1, R2 are close to each other and pressure is applied to the heat transfer plate 1, as shown in Figs. 25b and 25c, the first auxiliary material T1 pushes the heat transfer plate 1 on the lower side, the second auxiliary member T2 and The third auxiliary member T3 pushes both end sides of the heat transfer plate 1 on the upper side, and a bending moment acts on the heat transfer plate 1. Since the bending moment causes the tensile stress to be generated on the surface Za side of the heat transfer plate 1, the heat transfer plate 1 is forcibly bent to the lower side.

Further, as shown in Fig. 25a, while the roller R1 is rotated in the direction of the arrow α, the roller R2 is rotated in the direction of the arrow β, and at this time, the rollers R1 and R2 are oriented in the direction of the arrow γ with respect to the heat transfer plate 1 ( Roller conveying direction) makes relative movement. Further, while the roller R1 rotates in the direction of the arrow β, the roller R2 rotates in the direction of the arrow α, and at this time, the rollers R1 and R2 are opposed to the heat transfer plate 1 in the direction of the arrow δ (roller conveying direction). Sexual movement.

Therefore, the position of the bending moment acting on the heat transfer plate 1 migrates due to the relative movement thereof, and the entirety of the heat transfer plate 1 is forcibly bent downward. Therefore, the relative movement is repeated to correct the bending. Further, the first auxiliary member T1 to the third auxiliary member T3 are bent toward the opposite side of the bending corresponding to the mechanical characteristics of the heat transfer plate 1 and the curvature of the bending, and the bending is corrected to a sufficient thickness.

Further, after the rollers R1 and R2 are rotated in the longitudinal direction of the heat transfer plate to perform a correcting process, the rollers R1 and R2 are rotated in the lateral direction. In other words, the first auxiliary member T1 to the third auxiliary member T3 are disposed in parallel with the lateral direction, and the rollers R1 and R2 are disposed orthogonally to the first auxiliary member T1 to the third auxiliary member T3. Then, the rollers R1, R2 are reciprocated in the lateral direction. Thereby, the heat transfer plate 1 can be balanced and corrected.

In addition, although the back surface Zb of the heat transfer plate 1 is turned upward and the 歪 correction work is performed, the surface correction may be performed without turning the surface Za upward. At this time, since each of the above-described constituent elements is symmetrical in the outline, the description thereof will be omitted.

According to the seventh embodiment described above, even when the surface Za of the heat transfer plate 1 is thermally contracted due to the joining process, the heat transfer plate 1 is bent, and tensile stress is generated in the base member Za by the bending moment, which is easy to increase. The flatness of the heat transfer plate.

[Examples]

Next, an embodiment of the present invention will be described. In the embodiment of the present invention, three circles are drawn on the surface Za and the back surface Zb of the base member 2 which are square in plan view as shown in Figs. 26a and 26b, respectively, and friction stir is performed to measure the curvature generated on the surface Za side. The amount of deformation and the amount of deformation of the bend generated on the side of the back side Zb. That is, the closer the value of the amount of deformation of the bending generated on the surface Za side to the value of the amount of deformation of the bending generated on the side of the back surface Zb, the higher the flatness of the base member 2.

The base member 2 was a rectangular parallelepiped of 500 mm × 500 mm in plan view, and the thickness was measured using 30 mm and 60 mm, respectively. The material of the base member 2 is a 5012 aluminum alloy of JIS standard.

The three circles of the friction stir trajectory are centered on the point j or the position j' set at the center of the base member 2, and the surface Za and the back surface Zb are set together to be r1 = 100 mm (hereinafter referred to as a small circle) and r2 = 150 mm (below). It is called the middle circle), r3=200mm (hereinafter referred to as the big circle). The order of friction stirring is performed in the order of small circles, medium circles, and large circles.

The rotary tool uses the same size rotary tool together on the surface Za side and the back side Zb side. The size of the rotary tool was such that the outer diameter of the shoulder was 20 mm, the length of the stirring pin was 10 mm, the size of the root of the stirring pin (maximum diameter) was 9 mm, and the size of the front end of the stirring pin (minimum diameter) was 6 mm. The number of rotations of the rotary tool was set to 600 rpm, and the conveyance speed was set to 300 mm/min. Further, the surface Za side and the back surface Zb side are set together so that the pressing amount of the rotary tool is set to be constant. As shown in Fig. 26, the plasticized regions formed on the surface Za side become plasticized regions W21 to W23 from small circles to large circles, respectively. Moreover, the plasticized region formed in the back surface Zb becomes the plasticized regions W31 to W33 from the small circle to the large circle. The results of the measurements in this example are shown in Tables 1 to 4 below.

Table 1 shows the measured values when the thickness of the base member was 30 mm and the friction stir was performed from the surface side. "Before FSW" is the difference between the center point j (reference j) and each location (location a to location h) before the friction stir. "After FSW" is a reference j of 0, and after performing friction stir of three circles, the difference between the reference j and each point is indicated. The "surface side deformation amount" indicates the value of each place (before FSW - before FSW). The lowermost column of the "surface side deformation amount" indicates the average value of the point a to the point h. The negative values of "before FSW" and "after FSW" indicate that they are located below the reference j.

Table 2 is a table in which the thickness of the base member is 30 mm and the measured value at the time of friction stir (correction engineering) is performed from the back side. "Before FSW" is the difference between the center point j' (reference j') and each point (a' to h') before the friction stir.

As shown in Fig. 27, "FSW1" indicates that the reference j' is 0, and after the friction stir of the small circle (radius r1), the height difference between the reference j' and each point is indicated. The "back side deformation amount 1" is a value indicating each position (before FSW1-FSW). The lowermost column of "back side deformation amount 1" indicates the average value of the point a to the point h.

"FSW2" has a reference j' of 0, and except for a small circle (radius r1), after the friction stir of the middle circle (radius r2), the height difference between the reference j' and each point is shown. The "back side deformation amount 2" indicates the value (before FSW2-FSW) in each point. The lowermost column of "back side deformation amount 2" indicates the average value of the point a to the point h.

"FSW3" is based on the reference j', except for the small circle (radius r1) and the middle circle (radius r2), after the friction angle of the large circle (radius r3) is half, the reference j' is compared with each location. difference. The "back side deformation amount 3" indicates the value of each point (before FSW3-FSW). The lowermost column of "back side deformation amount 3" indicates the average value of the point a to the point h.

Table 3 shows a table in which the thickness of the base member is 60 mm and the side value when the friction stir is performed from the surface side. Each item of Table 3 has the same meaning as each item of Table 1.

Table 4 shows the measured values when the base member has a thickness of 60 mm and is friction stir from the back side. Each item of Table 4 has substantially the same meaning as each item of Table 2.

When the average value (1.61) of the "surface side deformation amount" in Table 1 is compared with the average value (2.04) of the "back side deformation amount" 1 in Table 2, the value of "back side deformation amount 1" is large. Similarly, the average value of the "back side deformation amount 2" (2.95) and the "back side deformation amount 3" flat weight (3.53) are also larger than the average value of the "surface side deformation amount" (1.61). That is, when the thickness of the base member is 30 mm, the bending of the base member is excessively restored even if the small-diameter friction stir is performed from the back side. Therefore, when the base member is 30 mm, the flatness of the base member 2 is improved with a lower degree of work than the surface side.

When the average value (0.98) of the "surface side deformation amount" in Table 3 is compared with the average value (0.91) of the "back surface side deformation amount 2" in Table 4, the amount of deformation between the two is approximate. Therefore, when the thickness of the base member 2 is 60 mm, it is confirmed that the flatness of the base member 2 is high when the small-circle and the medium-circle friction stir are performed from the back side. That is, when the thickness of the plate is 60 mm, if the degree of work on the back side is set to be lower than that on the surface side, the flatness of the base member 2 can be improved.

1. . . Heat transfer board

2. . . Base member

6. . . Cover slot

8. . . Groove

10. . . Cover

20. . . Thermal media tube

F. . . Joining rotary tool

G. . . Correction rotary tool

J. . . Flat joint

P. . . Pushing device

Q. . . Void

R1. . . Roller

R2. . . Roller

T1. . . First auxiliary member

T2. . . Second auxiliary member

T3. . . Third auxiliary member

W. . . Plasticized area

Za. . . surface

Zb. . . back

Zc. . . side

Fig. 1 is a view showing a heat transfer plate according to a first embodiment, wherein Fig. 1a is a perspective view, and Fig. 1b is a cross-sectional view taken along line I-I of Fig. 1a.

Fig. 2 is a view showing a heat transfer plate of the first embodiment, wherein Fig. 2a is an exploded perspective view, and Fig. 2b is an exploded sectional view.

Fig. 3 is a cross-sectional view showing a method of manufacturing a heat transfer plate according to the first embodiment, wherein Fig. 3a shows a groove forming process, Fig. 3b shows a heat medium pipe insertion process, and Fig. 3c shows a cover groove closing process.

Fig. 4a is a side view showing the joining rotary tool, and Fig. 4b is a side view showing the correcting rotary tool.

Fig. 5 is a perspective view showing a method of manufacturing a heat transfer plate according to the first embodiment before performing a joining process.

6a to 6c are plan views showing the joining process in a stepwise manner in the method of manufacturing the heat transfer sheet according to the first embodiment.

Fig. 7 is a view showing a state in which a joining process is performed in a method of manufacturing a heat transfer plate according to the first embodiment, wherein Fig. 7a is a perspective view, and Fig. 7b is a cross-sectional view of a connecting line between a point c and a point f.

Fig. 8a is a perspective view showing a correction process in the method of manufacturing the heat transfer plate according to the first embodiment, and Fig. 8b is a plan view showing a correction process.

Fig. 9 is a cross-sectional view of the heat transfer plate of the second embodiment, Fig. 9a is a schematic cross-sectional view, and Fig. 9b is a cross-sectional view showing the friction stir.

Fig. 10 is a cross-sectional view showing the heat transfer plate of the third embodiment.

Fig. 11 is a perspective view of the heat transfer plate of the fourth embodiment.

Fig. 12 is an exploded perspective view showing the heat transfer plate of the fourth embodiment.

Figure 13 is a perspective cross-sectional view showing the heat transfer plate of the fourth embodiment.

Fig. 14a is a perspective view showing a joining process in the method for producing a heat transfer plate according to the fourth embodiment, and Fig. 14b is a cross-sectional view taken along line II-II of Fig. 14a.

Fig. 15 is a view showing a joining process after the heat transfer sheet manufacturing method of the fourth embodiment, wherein Fig. 15a is a perspective view, and Fig. 15b is a cross-sectional view of the line connecting the point c and the point f.

Fig. 16a is a plan view showing a method of manufacturing a heat transfer plate according to a fourth embodiment, and Fig. 16b is a plan view showing a corner friction stir process.

Fig. 17 is a view showing a surface shaving process of the method for manufacturing the heat transfer plate of the fourth embodiment in the line III-III of Fig. 16.

Figure 18 is a cross-sectional view showing a heat transfer plate of a fifth embodiment.

Fig. 19 is a plan view showing the surface side of the heat transfer plate of the sixth embodiment.

Fig. 20 is a plan view showing the back side of the heat transfer plate of the sixth embodiment.

21 is a plan view of the back side of the heat transfer plate, FIG. 21a shows a first modification, 21B shows a second modification, 21C shows a third modification, and 21d shows a fourth modification. 21e shows a fifth modification, and 21f shows a sixth modification.

Fig. 22 is a perspective view showing a preparation stage of the press correction in the seventh embodiment.

Fig. 23 is a side view showing the pressing correction of the seventh embodiment, Fig. 23a is a view before pressing, and Fig. 23b is a view showing pushing.

Fig. 24 is a plan view showing a pressing position of the pressing correction in the seventh embodiment.

Fig. 25 is a side view showing the roller correction of the seventh embodiment, wherein Fig. 25a is a perspective view, Fig. 25b is a side view before pushing, and Fig. 25c is a side view in pushing.

Fig. 26 is a view showing a base member in the embodiment, wherein Fig. 26a is a perspective view on the front side, and Fig. 26b is a plan view on the back side.

Fig. 27 is a side view of the embodiment in which the back side is oriented upward after the friction stirs the surface side.

Figure 28 is a cross-sectional view of a conventional heat transfer plate.

1. . . Heat transfer board

2. . . Base member

10. . . Cover

20. . . Thermal media tube

W1. . . Plasticized area

Za. . . surface

Zb. . . back

Zc. . . side

Claims (35)

A method for manufacturing a heat transfer plate, comprising: a cover groove occlusion project, wherein the cover plate is disposed in the cover groove, the cover groove is formed around the groove, the groove is open on a surface side of the base member; The joining rotary tool performs frictional stirring along the flat portion of the side wall of the cover groove and the side surface of the cover plate, and performs a friction stirrance by using a correcting rotary tool from the back side of the base member. The volume of the plasticized region formed by the above-described correcting process is smaller than the volume of the plasticized region formed by the above-described joining process. A method for manufacturing a heat transfer plate, comprising: a tube insertion process for a heat medium, inserting a tube for a heat medium into a groove, the groove being formed on a bottom surface of the cover groove, the cover groove opening on a surface side of the base member; In the tank occlusion process, the cover plate is disposed in the cover groove; and the joining process is performed such that the joining rotary tool performs relative frictional movement along the flat portion of the side wall of the cover groove and the side surface of the cover plate to perform friction stir; The friction stir is performed from the back side of the base member using a correcting rotary tool, wherein the volume of the plasticized region formed by the above-described correcting process is smaller than the volume of the plasticized region formed by the joining process. The method for producing a heat transfer sheet according to claim 2, wherein in the joining process, a plastic fluid material fluidized by frictional heat flows into the void portion, and the void portion is formed in the heat medium tube Around. A method for manufacturing a heat transfer plate, comprising: a cover insertion process, inserting a cover plate into a groove opening on a surface side of the base member; and engaging work to frictionally stir the joint rotary tool along the groove for relative movement And the correcting process, the friction stir is performed from the back side of the base member using the correcting rotary tool, wherein the volume of the plasticized region formed by the above-described correcting process is larger than the volume of the plasticized region formed by the joining process Still less. A method for manufacturing a heat transfer plate, comprising: a tube insertion process for a heat medium, inserting a tube for a heat medium into a groove opening on a surface side of the base member; inserting the cover plate into the groove, inserting the cover plate into the groove; Friction stirring is performed by relatively moving the joining rotary tool along the groove; and correcting the work, and friction stir is performed from the back side of the base member using the correcting rotary tool, wherein the plasticized region formed by the above-mentioned correction engineering The volume amount is smaller than the volume of the plasticized region formed by the above bonding process. The method of manufacturing a heat transfer sheet according to the fifth aspect of the invention, wherein, in the joining process, the cover plate is pressed against the upper portion of the heat medium tube by a pressing force of the joining rotary tool, At least an upper portion of the cover plate and the base member are plastically fluidized. The method for manufacturing a heat transfer plate according to any one of the preceding claims, wherein, in the above-mentioned correction engineering, a planar shape of a trajectory of the correcting rotary tool is relative to the base member The center becomes a little bit symmetrical. The method of manufacturing a heat transfer sheet according to any one of the preceding claims, wherein in the above-described correction, the planar shape of the trajectory of the correcting rotary tool is different from the base member The shape of the outer edge is roughly similar. The method of manufacturing a heat transfer sheet according to any one of the preceding claims, wherein in the above-mentioned correction engineering, a planar shape of a locus of the correcting rotary tool is formed on the base The planar shape of the trajectory of the above-described joining rotary tool on the surface side of the member is substantially the same. The method for producing a heat transfer sheet according to any one of the preceding claims, wherein the correction tool includes a full length of the correcting rotary tool and a surface side formed on the base member The total length of the trajectory of the above-described joining rotary tool is substantially the same. The method for producing a heat transfer sheet according to any one of the preceding claims, wherein the correction tool has a full length ratio of the correcting rotary tool formed on a surface side of the base member The total length of the trajectory of the above-described joining rotary tool is also short. The method for producing a heat transfer sheet according to any one of the preceding claims, wherein the outer diameter of the shoulder of the correcting rotary tool for the above-mentioned correction engineering is greater than the joint work. The outer diameter of the shoulder of the above-described joining rotary tool is also small. The method for producing a heat transfer sheet according to any one of the first aspect of the invention, wherein the length of the pin of the correcting rotary tool for the correction engineering is greater than that of the joint work. The length of the pin of the above-described joining rotary tool is also short. The method for producing a heat transfer sheet according to any one of claims 1, 2, 4, or 5, wherein the thickness of the base member is 1.5 times or more of an outer diameter of a shoulder portion of the joining rotary tool. The method for producing a heat transfer sheet according to any one of claims 1, 2, 4, or 5, wherein the thickness of the base member is three times or more the length of the pin of the joining rotary tool. The method for manufacturing a heat transfer plate according to any one of claims 1, 2, 4, or 5, wherein, in the case where the base member is a planar polygon, in the above correction engineering, the angle further includes a corner In the friction stir welding process, the corner portion of the base member is frictionally stirred by the above-described correcting rotary tool. The method for producing a heat transfer plate according to the second or fifth aspect of the invention, wherein the heat medium pipe is provided with a heater, further comprising an annealing process, and energizing the heater after the correcting process And annealing the above heat transfer plate. The method for manufacturing a heat transfer sheet according to any one of the preceding claims, further comprising a surface shaving process, wherein the back side of the base member is subjected to surface shaving after the correcting process In the machining, the depth of the face grinding is larger than the length of the pin of the correcting rotary tool. A method for manufacturing a heat transfer plate, comprising: a cover groove occlusion project, wherein the cover plate is disposed in the cover groove, the cover groove is formed around the groove, the groove is open on a surface side of the base member; a joining rotary tool performs frictional agitation while moving along a side wall of the cover groove and a flat portion of the side surface of the cover plate; and a correcting process, which is formed by the joining process and protrudes toward the back side of the base member The bending is caused by the tensile stress generated on the surface side of the base member and the bending moment acting to correct it. A method for manufacturing a heat transfer plate, comprising: a tube insertion process for a heat medium, inserting a tube for a heat medium into a groove, the groove being formed on a bottom surface of the cover groove, the cover groove opening on a surface side of the base member; In the tank occlusion process, the cover plate is disposed in the cover groove; and the joining process is performed such that the joining rotary tool performs relative frictional movement along the flat portion of the side wall of the cover groove and the side surface of the cover plate to perform friction stir; The bending which is formed by the joining process and which is convex toward the back surface side of the base member is caused by the occurrence of tensile stress on the surface side of the base member and the bending moment acts to correct it. The method for producing a heat transfer plate according to claim 20, wherein in the joining process, a plastic fluid material fluidized by frictional heat flows into the gap portion, and the void portion is formed in the heat medium tube Around. A method for manufacturing a heat transfer plate, comprising: a cover insertion process, inserting a cover plate into a groove opening on a surface side of the base member; and engaging work to frictionally stir the joint rotary tool along the groove for relative movement And the correction process, the bending which is formed by the joining process and which protrudes toward the back side of the base member is caused by the tensile stress generated on the surface side of the base member and corrected by the bending moment. A method for manufacturing a heat transfer plate, comprising: a tube insertion process for a heat medium, inserting a tube for a heat medium into a groove opening on a surface side of the base member; inserting the cover plate into the groove, inserting the cover plate into the groove; Friction stirrage for causing the joining rotary tool to move relative to each other along the groove; and correcting work, the bending formed by the joining process toward the back side of the base member is generated by the surface side of the base member The tensile stress is corrected by the bending moment. The method of manufacturing a heat transfer sheet according to claim 23, wherein in the joining process, the cover plate is pressed against the upper portion of the heat medium tube by the pressing force of the joining rotary tool At least an upper portion of the cover plate and the base member are frictionally stirred. The method for manufacturing a heat transfer sheet according to any one of the preceding claims, wherein in the above-mentioned correction engineering, the above-mentioned base member is corrected by pressing to correct the above-mentioned bending. The method of manufacturing a heat transfer sheet according to the invention of claim 25, wherein the first auxiliary member that is in contact with the center of the back side of the base member is placed in contact with the base The second auxiliary member and the third auxiliary member in the vicinity of the peripheral edge of the member on the surface side are sandwiched by the first auxiliary member and placed on both sides, thereby correcting the above-described bending. The method for producing a heat transfer sheet according to Item 26, wherein each of the auxiliary members is a material having a hardness lower than that of the base member. The method for producing a heat transfer sheet according to any one of the preceding claims, wherein in the above-described correction, the base member rotates the roller to correct the bending. The method of manufacturing a heat transfer sheet according to the invention of claim 28, wherein the first auxiliary member that is in contact with the center of the back side of the base member is placed in contact with the base The second auxiliary member and the third auxiliary member in the vicinity of the peripheral edge of the member on the surface side are sandwiched by the first auxiliary member and placed on both sides, thereby correcting the above-described bending. The method for producing a heat transfer sheet according to claim 29, wherein each of the auxiliary members is a material having a hardness lower than that of the base member. The method for producing a heat transfer sheet according to any one of claims 19, 20, 22, and 23, wherein the base member is impacted by an impactor to correct the bending. The method of manufacturing a heat transfer sheet according to the above aspect of the invention, wherein the first auxiliary member that is in contact with the center of the back side of the base member is placed in contact with the base The second auxiliary member and the third auxiliary member in the vicinity of the peripheral edge of the member on the surface side are sandwiched by the first auxiliary member and placed on both sides, thereby correcting the above-described bending. The method for producing a heat transfer plate according to Item 32, wherein each of the auxiliary members is a material having a hardness lower than that of the base member. The method for producing a heat transfer plate according to any one of claims 19, 20, 22, and 23, further comprising an annealing process, wherein the heat transfer plate is annealed after the correcting process. The method for producing a heat transfer plate according to claim 20, wherein, in the case where the heat medium pipe is provided with a heater, an annealing process is further included, and the heater is energized after the correcting process. And annealing the above heat transfer plate.