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WO2016181770A1 - Procédé d'assemblage - Google Patents

Procédé d'assemblage Download PDF

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Publication number
WO2016181770A1
WO2016181770A1 PCT/JP2016/062387 JP2016062387W WO2016181770A1 WO 2016181770 A1 WO2016181770 A1 WO 2016181770A1 JP 2016062387 W JP2016062387 W JP 2016062387W WO 2016181770 A1 WO2016181770 A1 WO 2016181770A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal member
welding
back surface
metal
stirring pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/062387
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English (en)
Japanese (ja)
Inventor
堀　久司
伸城 瀬尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Light Metal Co Ltd
Original Assignee
Nippon Light Metal Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Light Metal Co Ltd filed Critical Nippon Light Metal Co Ltd
Priority to JP2017517846A priority Critical patent/JP6414327B2/ja
Priority to CN201680026483.XA priority patent/CN107530826A/zh
Publication of WO2016181770A1 publication Critical patent/WO2016181770A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding

Definitions

  • the present invention relates to a joining method in which metal members are friction stir welded together.
  • Patent Documents 1 and 2 disclose a technique in which metal members are butted in a T shape when viewed from the front, and the butted portion is friction stir welded.
  • the rotating tool is inserted from the front surface side of the first metal member to friction stir the butt portion. It is to join.
  • Patent Document 3 discloses a joining method in which a first metal member and a second metal member are overlapped and welded to an inner corner formed by a surface of the first metal member and an end surface of the second metal member. It is disclosed.
  • the present invention provides a joining method capable of preventing the positions of the metal members from shifting and separating the metal members during friction stir welding, and further correcting the deformation of the metal members.
  • the issue is to provide.
  • this invention makes it a subject to provide the joining method with high joining strength.
  • the present invention provides a butting step of butting the back surface of the plate-like first metal member and the end surface of the plate-like second metal member to form a butting portion, and the first metal member
  • the stirring pin is inserted, and the rotary tool is moved along the abutting portion so that the stirring pin contacts only the first metal member or both the first metal member and the second metal member.
  • the present invention also includes a butting step of butting the back surface of the plate-shaped first metal member and the end surface of the plate-shaped second metal member to form a butting portion, the back surface of the first metal member, and the second metal
  • a friction stirring step of friction stir welding is performed by a butting step of butting the back surface of the plate-shaped first metal member and the end surface of the plate-shaped second metal member to form a butting portion, the back surface of the first metal member, and the second metal
  • a welding step of performing welding on the inner corner formed by the side surface of the member and inserting a stirring pin
  • the present invention forms a first abutting portion by abutting the end surface of the plate-shaped first metal member and the end surface of the plate-shaped third metal member, and the back surface of the first metal member and the third metal member.
  • Welding to the inner corner formed by the butting step of forming the second butting portion by butting the back surface of the metal member and the end surface of the second metal member, and the back surface of the first metal member and the side surface of the second metal member A welding step of welding the inner corner formed by the back surface of the third metal member and the side surface of the second metal member, the surface side opposite to the back surface of the first metal member, and the A stirring pin of a rotating tool is inserted into the first abutting portion from the surface side opposite to the back surface of the third metal member, the rotating tool is moved along the first abutting portion, and the agitating pin is moved to the first abutting portion.
  • Only one metal member and the third metal member, or the first metal member A friction stir step for friction stir welding the first butted portion and the second butted portion in a state where they are in contact with all of the genus member, the second metal member, and the third metal member, and in the friction stir step, The first butting portion and the second butting portion are friction stir welded while pushing the shoulder portion of the rotating tool into the surface of the first metal member and the surface of the third metal member.
  • the present invention forms a first abutting portion by abutting the end face of the plate-like first metal member with the end face of the plate-like third metal member, and the back surface of the first metal member and the third metal Welding is performed on the inner corner formed by the butting step of forming the second butting portion by butting the back surface of the member and the end surface of the second metal member, and the back surface of the first metal member and the side surface of the second metal member.
  • the inner corner can be reliably joined.
  • a pair of mounts are disposed on both sides of the second metal member, and a chamfered portion is formed in a portion of the mount that faces the inner corner.
  • the metal member can be suitably disposed on the gantry.
  • the present invention provides an overlapping process in which the surface of the plate-shaped first metal member and the back surface of the plate-shaped second metal member are overlapped to form an overlapped portion, the end surface of the first metal member, and the first
  • a rotating tool including the second metal member is inserted from the surface side opposite to the back surface of the second metal member, and the stirring pin is only the second metal member or both the first metal member and the second metal member
  • a first main joining step in which the rotating tool is relatively moved along the superposed portion in a state of contact with the superposed portion to friction stir weld the superposed portion.
  • the rotation The shoulder of the tool is placed on the surface of the second metal member. And performing friction stir welding while pushing.
  • the bonding strength of the overlapped portion can be increased. Moreover, the position shift of the 1st metal member and the 2nd metal member at the time of a 1st main joining process can be prevented by performing a welding process. Moreover, generation
  • the present invention provides an overlapping process in which the surface of the plate-shaped first metal member and the back surface of the plate-shaped second metal member are overlapped to form an overlapped portion, the end surface of the first metal member, and the first A welding step of welding an inner corner formed by the back surface of the two metal member and welding an inner corner formed by the surface of the first metal member and the end surface of the second metal member; and a stirring pin Insert the rotary tool from the front side opposite to the back side of the second metal member, and contact only the stirring pin with only the second metal member or both the first metal member and the second metal member And a first main joining step in which the rotating tool is relatively moved along the overlapped portion in a state of being caused to friction stir weld the overlapped portion.
  • the bonding strength of the overlapped portion can be increased. Moreover, the position shift of the 1st metal member and the 2nd metal member at the time of a 1st main joining process can be prevented by performing a welding process. Further, by performing only the first main joining step by bringing only the stirring pin of the rotary tool into contact, friction stirring can be performed to a deep position without applying a large load to the friction stirring device.
  • a rotary tool having a stirring pin and a shoulder portion is inserted from the back side opposite to the surface of the first metal member, and the stirring pin of the rotary tool is only the first metal member or the first metal.
  • a rotary tool provided with a stirring pin is inserted from the back side opposite to the surface of the first metal member, and only the first metal member or the first metal member and the stirring pin of the rotary tool are inserted.
  • the plasticizing region in the first main joining step overlaps the plasticizing region in the second main joining step.
  • the bonding strength can be further increased and the bonding can be performed in a balanced manner.
  • the present invention provides an overlapping process in which the surface of the plate-shaped first metal member and the back surface of the plate-shaped second metal member are overlapped to form an overlapped portion, the end surface of the first metal member, and the first A welding step of welding an inner corner formed by the back surface of the two metal member and welding an inner corner formed by the surface of the first metal member and the end surface of the second metal member; and a pair of shoulder portions And a stirrer pin that connects between the shoulder portions, and a main joining step of relatively moving a bobbin rotating tool along the superposed portion to friction stir weld the superposed portion, and in the main joining step, Friction stirring is performed in a state where the shoulder portion is in contact with each of the first metal member and the second metal member.
  • the bonding strength of the overlapped portion can be increased. Moreover, the position shift of the 1st metal member and the 2nd metal member at the time of this joining process can be prevented by performing a welding process. Moreover, the whole joining process of the 1st metal member and the 2nd metal member can be joined by 1 pass by performing this joining process using a bobbin rotation tool.
  • the inner corner can be reliably joined.
  • the joining method according to the present invention it is possible to prevent displacement of metal members and separation of metal members during friction stir welding. Moreover, according to the joining method which concerns on this invention, a deformation
  • first metal member 1 and the second metal member 2 are butted in a T shape in front view and joined by friction stirring.
  • the first metal member 1 and the second metal member 2 both have a plate shape. Although the plate
  • the first metal member 1 and the second metal member 2 are appropriately selected from metals capable of friction stirring such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, and magnesium alloy.
  • the abutting step is a step of forming a butting portion J by abutting the back surface 1a of the first metal member 1 and the end surface 2c of the second metal member 2 as shown in FIG.
  • the welding process is a process of welding and joining the inner corners as shown in FIG.
  • the welding process includes a first inner corner formed by the back surface 1 a of the first metal member 1 and the first side surface 2 a of the second metal member 2, the back surface 1 a of the first metal member 1, and the second metal member 2.
  • the second inner corner formed by the two side surfaces 2b is welded.
  • the type of welding is not particularly limited, but in the welding process according to the present embodiment, weld metals 3 and 3 are formed by performing overlay welding such as laser welding, TIG welding, or MIG welding. What is necessary is just to supply a filler material suitably as needed.
  • the welding process may be performed continuously in one pass without any gap as in this embodiment, or may be performed intermittently so that the weld metal 3 with respect to one inner corner is formed. Also good.
  • the back surface 1a side of the first metal member 1 becomes concave due to thermal contraction (the front end side of the first metal member 1 is close to the second metal member 2).
  • a welding process should just be performed to at least one of a 1st inner corner and a 2nd inner corner, it can join with sufficient balance by welding to both.
  • the friction stir step is a step of performing friction stir welding to the butt joint J as shown in FIGS.
  • the 1st metal member 1 and the 2nd metal member 2 are first arrange
  • Each of the mounts 4 and 4 has a rectangular parallelepiped shape.
  • Chamfered portions 4 a and 4 a are formed at portions of the gantry 4 and 4 that face each inner corner. The shape of the chamfered portion 4a may be appropriately formed so as not to come into contact with the weld metal 3, and is a C chamfered shape in the present embodiment.
  • the rotary tool F is inserted from the surface 1 b of the first metal member 1, and friction stir welding is performed along the abutting portion J.
  • the rotary tool F includes a connecting portion F1 and a stirring pin F2.
  • the rotary tool F is made of, for example, tool steel.
  • the connecting part F1 is a part connected to a rotating shaft of a friction stirrer (not shown).
  • the connecting portion F1 has a columnar shape and is formed with a screw hole to which a bolt is fastened.
  • the stirring pin F2 hangs down from the connecting part F1, and is coaxial with the connecting part F1.
  • the stirring pin F2 is tapered as it is separated from the connecting portion F1.
  • the length of the stirring pin F ⁇ b> 2 is larger than the plate thickness of the first metal member 1.
  • a spiral groove F3 is formed on the outer peripheral surface of the stirring pin F2. In the present embodiment, in order to rotate the rotary tool F to the right, the spiral groove F3 is formed counterclockwise from the base end toward the tip. In other words, the spiral groove F3 is formed counterclockwise as viewed from above when the spiral groove F3 is traced from the base end to the tip.
  • the spiral groove F3 when rotating the rotation tool F counterclockwise, it is preferable to form the spiral groove F3 clockwise as it goes from the proximal end to the distal end.
  • the spiral groove F3 in this case is formed clockwise when viewed from above when the spiral groove F3 is traced from the proximal end to the distal end.
  • the insertion depth of the rotary tool F is preferably set so that the tip of the stirring pin F2 reaches the butt J. That is, it is preferable to perform friction stir welding by bringing the rotary tool F into contact with the first metal member 1 and the second metal member 2.
  • the tip of the agitation pin F2 does not reach the butting portion J, that is, when the agitation pin F2 is brought into contact only with the first metal member 1, the frictional heat between the first metal member 1 and the agitation pin F2 As a result, the metal around the butted portion J is plastically fluidized so that the first metal member 1 and the second metal member 2 are joined.
  • the joining method according to the present embodiment described above since welding is performed on the inner corner, it is possible to prevent displacement and separation between the first metal member 1 and the second metal member 2 during the friction stirring step. it can. Thereby, generation
  • the type of welding in the welding process is not particularly limited, but the inner corner can be easily and reliably welded by performing laser welding, TIG welding, or MIG welding as in the present embodiment.
  • the mounts 4 and 4 of the present embodiment have chamfered portions 4a and 4a formed at portions facing the inner corners.
  • the weld metal 3 and the gantry 4 interfere with each other, and the first metal member 1 and the second metal member 2 may be lifted from the gantry 4.
  • the rotary tool F is particularly advantageous when the thickness of the first metal member 1 is large.
  • the rotation tool F can make the width
  • the joining method according to the second embodiment of the present invention will be described. As shown in FIG. 3, the joining method according to the second embodiment is different from the first embodiment in that a rotating tool G is used. In the joining method according to the second embodiment, a butt process, a welding process, and a friction stirring process are performed. Since the butting process and the welding process are the same as those in the first embodiment, the description thereof is omitted.
  • Rotating tool G is composed of a shoulder part G1 and a stirring pin G2 depending from the shoulder part G1.
  • a spiral groove is formed on the outer peripheral surface of the stirring pin G2.
  • the rotary tool G is moved along the abutting portion J while being inserted into the surface 1 b of the first metal member 1.
  • the lower end surface of the shoulder portion G1 is pushed into the first metal member 1 by about several millimeters to perform friction stirring.
  • the insertion depth of the stirring pin G2 is not particularly limited as long as the abutting portion J can be friction stir welded, but is preferably set so that the tip of the agitating pin G2 reaches the abutting portion J as in this embodiment. That is, it is preferable to perform friction stir welding by bringing the rotary tool G into contact with the first metal member 1 and the second metal member 2.
  • substantially the same effect as that of the first embodiment can be obtained. Moreover, since the shoulder part G1 is pushed into the surface 1b of the first metal member 1, the plastic fluidized material is pressed by the shoulder part G1, and burrs can be reduced. Further, when the pressing amount of the rotary tool G is reduced, the concave groove generated on the surface 1b by the plasticizing region W can be reduced, so that the surface treatment or the like is facilitated and the surface 1b of the first metal member 1 is cleaned. Can be finished.
  • the joining method according to the third embodiment of the present invention is different from the first embodiment in that the thickness of the first metal member 1A and the rotary tool G are used.
  • the first metal member 1A has a thickness of about 1/3 compared to the first embodiment. Therefore, in the welding process, as compared with the first embodiment, the back surface 1a of the first metal member 1A becomes concave due to thermal contraction (so that the front end side of the first metal member 1A is close to the second metal member 2). Deforms greatly.
  • the friction stirring step is the same as the friction stirring step according to the second embodiment. That is, in the friction stirring step, the rotary tool G is inserted from the surface 1b of the first metal member 1A, and the rotary tool G is moved along the abutting portion J.
  • the outer diameter of the shoulder portion G1, the feed speed of the rotating tool G, or the rotational speed of the rotating tool G is appropriately set to control the heat input.
  • the first metal member 1A (1 ) Is preferably flat.
  • the joining method according to the fourth embodiment of the present invention will be described. As shown in FIGS. 5A and 5B, in the joining method according to the fourth embodiment, the first metal member 21, the second metal member 22, and the third metal member 23 are butted in a T-shape when viewed from the front. This is different from the first embodiment in that it is joined.
  • a butt process, a welding process, and a friction stirring process are performed.
  • the end surface 21c of the first metal member 21 and the end surface 23c of the third metal member 23 are butted to form the first butting portion J1.
  • the end face 22c of the second metal member 22 is butted against the butting part J1 to form the second butting part J2. That is, the end surface 22 c of the second metal member 22 is abutted against the back surface 21 a of the first metal member 21 and the back surface 23 a of the third metal member 23.
  • the welding step is a step of welding the first inner corner between the back surface 21a of the first metal member 21 and the first side surface 22a of the second metal member 22 as shown in FIG.
  • the welding process is a process of welding the second inner corner between the back surface 23 a of the third metal member 23 and the second side surface 22 b of the second metal member 22.
  • the friction stirring step is a step of friction stir welding the first butting portion J1 and the second butting portion J2 using the rotary tool G as shown in FIGS. 6 (a) and 6 (b).
  • first, the first metal member 21, the second metal member 22, and the third metal member 23 joined to the mounts 4 and 4 with the weld metals 3 and 3 are arranged in the same manner as in the first embodiment.
  • the rotating stirring pin G2 is inserted into the first butting portion J1, and the rotating tool G is relatively moved along the first butting portion J1.
  • a plasticized region W is formed in the movement locus of the rotary tool G.
  • the lower end surface of the shoulder portion G1 is pushed into the surface 21b of the first metal member 21 and the surface 23b of the third metal member 23 by about several millimeters to perform friction stirring.
  • the insertion depth of the stirring pin G2 is preferably set so that the tip of the stirring pin G2 reaches the second butting portion J2. That is, it is preferable to perform the friction stir welding in a state where the stirring pin G2 is in contact with the first metal member 21, the second metal member 22, and the third metal member 23.
  • the type of welding in the welding process is not particularly limited, but the inner corner can be easily and reliably welded by performing laser welding, TIG welding, or MIG welding as in the present embodiment.
  • the mounts 4 and 4 of the present embodiment have chamfered portions 4a and 4a formed at portions facing the inner corners.
  • the weld metal 3 and the gantry 4 interfere and the first metal member 21, the second metal member 22.
  • the third metal member 23 may be lifted from the gantry 4, but according to the present embodiment, it is possible to prevent the weld metals 3 and 3 and the gantry 4 from interfering with each other.
  • the joining method according to the fifth embodiment of the present invention will be described. As shown in FIGS. 7A and 7B, the joining method according to the fifth embodiment is different from the fourth embodiment in that a rotating tool F is used instead of the rotating tool G.
  • a butt process, a welding process, and a friction stirring process are performed. Since the butting process and the welding process are the same as those in the fourth embodiment, description thereof is omitted.
  • a rotating stirring pin F2 is inserted into the first butting portion J1, and the rotating tool F is relatively moved along the first butting portion J1.
  • a plasticized region W is formed in the movement trajectory of the rotary tool F.
  • the insertion depth of the stirring pin F2 is preferably set so that the tip of the stirring pin F2 reaches the second butting portion J2. That is, it is preferable to perform the friction stir welding in a state where the stirring pin F2 is in contact with the first metal member 21, the second metal member 22, and the third metal member 23.
  • the rotary tool F is particularly advantageous when the plate thickness of the first metal member 21 and the third metal member 23 is large. Moreover, since the rotation tool F can make the width
  • Both the first metal member 101 and the second metal member 102 have a plate shape. Although the plate
  • the first metal member 101 and the second metal member 102 are appropriately selected from metals capable of frictional stirring, such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium oxide, and magnesium alloy.
  • the superimposing step is a step of superposing the front surface 101a of the first metal member 101 and the back surface 102b of the second metal member 102 to form the overlapping portion J3.
  • the first metal member 101 and the second metal member 102 are restrained on a gantry (not shown) through a clamp so as not to move.
  • An inner corner U1 is formed by the surface 101a of the first metal member 101 and the end face 102c of the second metal member 102.
  • An inner corner U ⁇ b> 2 is formed by the back surface 102 b of the second metal member 102 and the end surface 101 c of the first metal member 101.
  • the “front surface” means a surface opposite to the “back surface”.
  • the welding process is a process of welding the inner corners U1 and U2 as shown in FIG.
  • the type of welding is not limited, but in this embodiment, overlay welding such as laser welding, TIG welding, or MIG welding is performed. What is necessary is just to supply a filler material suitably as needed.
  • build-up welding is continuously performed in one pass over the entire length of the inner corners U1 and U2.
  • a weld metal M is formed in each of the inner corners U1, U2.
  • the tab material joining step is a step of joining the tab materials T1 and T2 to both sides of the overlapping portion J3 as shown in FIG.
  • the tab members T1 and T2 are made of the same material as the first metal member 101 and the second metal member 102 and have a rectangular parallelepiped shape.
  • the height of the tab materials T1 and T2 is equal to the sum of the first metal member 101 and the second metal member 102 in the plate thickness direction.
  • the inner corner formed by the tab material T1, the first metal member 101, and the second metal member 102 is joined by welding.
  • the inner corner formed by the tab material T2 the first metal member 101, and the second metal member 102 is joined by welding.
  • the surface T1a of the tab material T1 and the surface 102a of the second metal member 102 are flush with each other, and the back surface T1b and the back surface 101b of the first metal member 101 are flush with each other.
  • the surface T2a of the tab member T2 and the surface 102a of the second metal member 102 are flush with each other, and the back surface T2b and the back surface 101b of the first metal member 101 are flush with each other.
  • the first main joining step is a step of friction stir welding the overlapping portion J3 from the surface 102a side of the second metal member 102 as shown in FIG.
  • joining is performed using a rotating tool G (first rotating tool).
  • the rotary tool G includes a columnar shoulder portion G1 and a stirring pin G2 that hangs down from the shoulder portion G1.
  • the stirring pin G2 is tapered toward the tip.
  • a spiral groove is formed on the outer peripheral surface of the stirring pin G2.
  • the start position Sp1 is set on the surface T1a of the tab material T1
  • the end position Ep1 is set on the surface T2a of the tab material T2.
  • the stirring pin G2 of the rotating tool G that rotates to the start position Sp1 is inserted.
  • the rotary tool G is relatively moved toward the end position Ep1 along the overlapping portion J3.
  • a plasticized region W1 is formed in the movement locus of the rotary tool G.
  • friction stirring is performed while pushing the lower end surface of the shoulder portion G1 of the rotary tool G into the second metal member 102 for about several millimeters.
  • the insertion depth of the stirring pin G2 may be set as appropriate, but is preferably set so that the stirring pin G2 reaches the overlapping portion J3. That is, the friction stir welding is performed in a state where the stirring pin G2 is in contact with both the first metal member 101 and the second metal member 102.
  • the second main joining step is a step of friction stir welding the superposed portion J3 from the back surface 101b side of the first metal member 101 as shown in FIG.
  • the rotating tool G is used for joining.
  • a start position is set for one of the tab material T1 and the tab material T2, and an end position is set for the other.
  • friction stir welding is performed in the same manner as in the first main joining step. That is, while the lower end surface of the shoulder portion G1 of the rotating tool G is pushed into the back surface 101b of the first metal member 101 by several millimeters, the rotating tool G is relatively moved along the overlapping portion J3 to perform friction stirring.
  • a plasticized region W2 is formed in the movement locus of the rotary tool G.
  • the insertion depth of the stirring pin G2 in the second main joining step may be set as appropriate, but in the present embodiment, it is preferable to set the stirring pin G2 so as to reach the overlapping portion J3. That is, the friction stir welding is performed in a state where the stirring pin G2 is in contact with both the first metal member 101 and the second metal member 102. More specifically, in the present embodiment, the insertion depth is set so that the tip of the stirring pin G2 enters the plasticizing region W1. The plasticized region W1 and the plasticized region W2 overlap.
  • the back surface 101b of the 1st metal member 101 and the surface 102a of the 2nd metal member 102 can be finished finely.
  • the joint strength of the superposed portion J3 can be increased by performing both welding and friction stir welding on the superposed portion J3. Moreover, the position shift of the 1st metal member 101 and the 2nd metal member 102 at the time of a 1st main joining process can be prevented by performing a welding process. Further, by pressing the shoulder portion G1 into the back surface 101b of the first metal member 101 and the front surface 102a of the second metal member 102, the generation of burrs can be suppressed. Moreover, although the 2nd main joining process may be abbreviate
  • the inner corners U1 and U2 are welded.
  • the type of welding is not limited, but in this embodiment, overlay welding such as laser welding, TIG welding, or MIG welding is performed.
  • overlay welding is intermittently performed on the entire length of the inner corners U1 and U2.
  • a weld metal M is formed in the inner corners U1 and U2 with a space therebetween. Since the tab material joining step is the same as that of the sixth embodiment, description thereof is omitted.
  • the first main joining step is a step of friction stir welding the overlapping portion J3 from the surface 102a side of the second metal member 102 as shown in FIG.
  • joining is performed using a rotating tool (shoulderless rotating tool) F.
  • a spiral groove F3 is formed on the outer peripheral surface of the stirring pin F2.
  • the start position Sp1 is set on the surface T1a of the tab material T1
  • the end position Ep1 is set on the surface T2a of the tab material T2.
  • the stirring pin F2 of the rotating tool F rotated to the right is inserted into the start position Sp1.
  • the rotary tool F is relatively moved toward the end position Ep1 along the overlapping portion J3.
  • a plasticizing region W1 is formed on the movement locus of the rotary tool F.
  • the connecting portion F1 of the rotary tool F is separated from the second metal member 102 and the friction stir welding is performed. That is, the friction stir welding is performed with the base end side of the stirring pin F2 exposed.
  • the insertion depth of the stirring pin F2 may be set as appropriate, but is preferably set so that the stirring pin F2 reaches the overlapping portion J3. That is, friction stir welding is performed in a state where the stirring pin F ⁇ b> 2 is in contact with both the first metal member 101 and the second metal member 102.
  • the second main joining step is a step of joining the overlapping portion J3 from the back surface 101b side of the first metal member 101 as shown in FIG.
  • the rotary tool F is used to join by friction stirring.
  • a start position is set for one of the tab material T1 and the tab material T2, and an end position is set for the other.
  • friction stir welding is performed in the same manner as in the first main joining step. That is, the connecting portion F1 of the rotary tool F is separated from the first metal member 101 to perform friction stir welding.
  • a plasticizing region W2 is formed in the movement locus of the rotary tool F.
  • the insertion depth of the stirring pin F2 in the second main joining step may be set as appropriate, but in this embodiment, it is preferable to set the stirring pin F2 so as to reach the overlapping portion J3. That is, friction stir welding is performed in a state where the stirring pin F ⁇ b> 2 is in contact with both the first metal member 101 and the second metal member 102. More specifically, the insertion depth is set so that the tip of the stirring pin F2 enters the plasticizing region W1. The tip side of the plasticized region W1 and the plasticized region W2 overlap.
  • the back surface 101b of the 1st metal member 101 and the surface 102a of the 2nd metal member 102 can be finished finely.
  • the joint strength of the superposed portion J3 can be increased. Moreover, the position shift of the 1st metal member 101 and the 2nd metal member 102 at the time of a 1st main joining process can be prevented by performing a welding process. Further, since the frictional resistance can be reduced by performing the first main joining process and the second main joining process using the rotary tool F, the friction stirrer (not shown) can be deeply moved without applying a large load. Friction stirring can be performed. When the plate thickness of the first metal member 101 and the second metal member 102 is large, it is effective to perform friction stirring using the rotary tool F.
  • the width of the plasticized regions W1 and W2 can be reduced, so that the width of the overlapping portion J3 (the overlap margin of the first metal member 101 and the second metal member 102) is reduced. Can do.
  • the 2nd main joining process may be abbreviate
  • the first main joining process and the second main joining process are performed using the rotating tool F, but the rotating tool G may be used.
  • the first main joining step and the second main joining step may be performed in a state where the base end side of the stirring pin G2 of the rotary tool G is exposed.
  • This joining process is a process of performing friction stir welding to the superposition part J3 using the bobbin rotating tool H as shown in FIG.
  • the bobbin rotating tool H includes a first shoulder portion H1, a second shoulder portion H2, and a stirring pin H3.
  • the first shoulder portion H1 has a substantially cylindrical shape.
  • a tapered portion H1a having a diameter reduced toward the stirring pin H3 is formed on the stirring pin H3 side of the first shoulder portion H1.
  • An end face H1b is formed at the end of the tapered portion H1a.
  • the second shoulder portion H2 has a substantially cylindrical shape.
  • a taper portion H2a having a diameter reduced toward the stirring pin H3 is formed on the stirring pin H3 side of the second shoulder portion H2.
  • An end face H2b is formed at the end of the tapered portion H2a.
  • the stirring pin H3 is a shaft-like member that connects the first shoulder portion H1 and the second shoulder portion H2.
  • the first metal member 101 and the second metal member 102 are clamped on a frame (not shown) so as not to move, and then the first metal member 101 and the second metal member are clamped.
  • the bobbin rotation tool H is positioned on the side of the member 102. The height position is adjusted so that the longitudinal center of the stirring pin H3 is positioned on the extension of the overlapping portion J3. Then, as shown in FIG. 14B, while rotating the bobbin rotating tool H, the bobbin rotating tool H is caused to enter the first metal member 101 and the second metal member 102 and relatively moved along the overlapping portion J3.
  • the second metal Since the length of the stirring pin H3 (the distance between the first shoulder portion H1 and the second shoulder portion H2) is smaller than the sum of the plate thicknesses of the first metal member 101 and the second metal member 102, the second metal The first shoulder portion H1 (end surface H1b) is pushed into the surface 102a of the member 102, and the second shoulder portion H2 (end surface H2b) is pushed into the back surface 101b of the first metal member 101. A plasticizing region W is formed in the movement locus of the bobbin rotating tool H. Thus, the first metal member 101 and the second metal member 102 are joined.
  • the back surface 101b of the 1st metal member 101 and the surface 102a of the 2nd metal member 102 can be finished finely.
  • the joining strength of the superposed part J3 can be increased by performing friction stir welding on the superposed part J3 in addition to the welding process. Moreover, the position shift of the 1st metal member 101 and the 2nd metal member 102 at the time of this joining process can be prevented by performing a welding process. Further, by performing the main joining step using the bobbin rotating tool H, the entire thickness direction of the first metal member 101 and the second metal member 102 can be joined in one pass. Further, by pressing the first shoulder portion H1 into the front surface 102a of the second metal member 102 and pressing the second shoulder portion H2 into the back surface 101b of the first metal member 101, the generation of burrs can be suppressed.
  • the second main joining process in the sixth embodiment may be performed using the rotary tool F. That is, as shown in FIG. 10, the rotation tool F may be used instead of the rotation tool G in the second main joining process. In this case, only the stirring pin F2 of the rotary tool F is brought into contact with both the first metal member 101 and the second metal member 2, or only the first metal member 101, and friction stirring is performed. In this case, the plasticized regions are overlapped.
  • the second main joining step in the seventh embodiment may be performed using the rotary tool G. That is, as shown in FIG. 12, the second main joining process may be performed using the rotary tool G instead of the rotary tool F. In this case, friction stirring is performed while pushing the shoulder G1 of the rotary tool G into the back surface 101b of the first metal member 101.
  • the rotary tool G performs friction stirring in a state where only the first metal member 101 or both the first metal member 101 and the second metal member 102 are in contact with each other. In this case, the plasticized regions are overlapped.
  • the tab members T1 and T2 are provided, but may be omitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un procédé d'assemblage par lequel il est possible, pendant un soudage par friction-malaxage, d'empêcher un déplacement d'éléments métalliques hors de position, ainsi que la séparation dedits éléments métalliques, et par lequel une déformation d'éléments métalliques peut être corrigée. Le procédé est caractérisé par le fait qu'il comprend les étape suivantes : l'aboutement de la surface arrière (1a) d'un premier élément métallique (1) et d'une surface d'extrémité d'un second élément métallique (2) ; le soudage de coins intérieurs qui sont formés par la surface arrière (1a) du premier élément métallique (1) et des surfaces latérales (2a, 2b) du second élément métallique (2) ; le malaxage par friction pour insérer une broche de malaxage (G2) d'un outil rotatif (G) depuis le côté de surface avant (1b) du premier élément métallique (1), pour déplacer l'outil rotatif (G) le long d'une partie en aboutement (J) et pour exécuter un soudage par malaxage par friction sur la partie en aboutement (J) dans un état dans lequel la broche de malaxage (G2) entre en contact avec le premier élément métallique (1) uniquement, ou avec à la fois le premier élément métallique (1) et le second élément métallique (2) ; dans l'étape de malaxage par friction, un soudage par malaxage par friction de la partie en aboutement (J) est effectué alors qu'une partie d'épaulement (G1) de l'outil rotatif (G) est pressée contre la surface avant (1b) du premier élément métallique (1).
PCT/JP2016/062387 2015-05-14 2016-04-19 Procédé d'assemblage Ceased WO2016181770A1 (fr)

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JP2018094569A (ja) * 2016-12-09 2018-06-21 日本軽金属株式会社 接合方法
JP2018118275A (ja) * 2017-01-25 2018-08-02 日本軽金属株式会社 接合方法

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JP2019025489A (ja) * 2017-07-25 2019-02-21 日本軽金属株式会社 接合方法
CN110587165B (zh) * 2019-09-16 2021-02-05 辽宁石油化工大学 一种铝及其合金型材的复合焊接方法
DE102020127794B8 (de) * 2020-10-22 2022-03-17 Bayerische Motoren Werke Aktiengesellschaft Gehäuseteil, insbesondere Gehäuseunterteil, eines Energiespeichergehäuses, Energiespeichergehäuse sowie Verfahren zum Herstellen eines Gehäuseteils
JP2024034226A (ja) * 2022-08-31 2024-03-13 アイシン高丘株式会社 摩擦撹拌接合を用いた構造体の製造方法、摩擦撹拌接合装置

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JP2018118275A (ja) * 2017-01-25 2018-08-02 日本軽金属株式会社 接合方法

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