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WO2011093564A1 - Plaque de lingotière de coulée, ensemble de plaque de lingotière, et moule - Google Patents

Plaque de lingotière de coulée, ensemble de plaque de lingotière, et moule Download PDF

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Publication number
WO2011093564A1
WO2011093564A1 PCT/KR2010/005357 KR2010005357W WO2011093564A1 WO 2011093564 A1 WO2011093564 A1 WO 2011093564A1 KR 2010005357 W KR2010005357 W KR 2010005357W WO 2011093564 A1 WO2011093564 A1 WO 2011093564A1
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WO
WIPO (PCT)
Prior art keywords
mold plate
slots
casting
slot
width
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/KR2010/005357
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English (en)
Korean (ko)
Inventor
이동우
박철민
김인달
최상영
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.)
Poongsan Corp
Original Assignee
Poongsan Corp
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
Priority claimed from KR1020100008265A external-priority patent/KR20110088660A/ko
Priority claimed from KR1020100008262A external-priority patent/KR20110088657A/ko
Priority claimed from KR1020100042168A external-priority patent/KR20110122587A/ko
Application filed by Poongsan Corp filed Critical Poongsan Corp
Publication of WO2011093564A1 publication Critical patent/WO2011093564A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds

Definitions

  • the present invention relates to a metal casting apparatus, and more particularly, to a mold structure used for casting molten metal and a casting apparatus using the same.
  • a casting process such as a continuous casting process, refers to a process in which molten metal is cooled through a mold to produce continuously cast steel.
  • the initial solidification process of the molten metal flowing into the mold is one of the factors that determine the properties of the cast slab is completed. If the cooling conditions in the mold during initial solidification are not adequately controlled, the cast may be distorted or even cracks may occur. In particular, the corner portion of the mold is structurally faster than the cooling rate, and thus there is a fear that the initial solidification of the cast steel is uneven and the cast steel is broken.
  • the problem to be solved by the present invention is to provide a mold structure capable of more uniformly controlling the cooling conditions corresponding to the solidified state of the molten metal.
  • the mold plate for casting of one embodiment of the present invention includes a first surface; And a second surface arranged on a side opposite to the first surface, the second surface having a plurality of first slots arranged in parallel and extending in a casting direction from a direction from top to bottom.
  • the width of the first slots disposed at the center of the second surface is wider than the width of the first slots disposed at the edge of the second surface.
  • the width of the first slots may be narrower from the central portion of the second surface toward the edge.
  • a second slot intersecting the first slots may be further formed on the second surface.
  • the first surface may be a surface in contact with the molten metal.
  • the first surface may have a recess on top thereof.
  • the casting mold plate according to another aspect of the present invention has one surface on which a plurality of first slots arranged in parallel are formed, and the center distance of the first slots in the center portion is shorter than the center distance of the first slots in the edge portion.
  • the cooling medium inlet and outlet may be formed on the other surface facing the one surface.
  • a mold plate assembly of one embodiment of the present invention is provided.
  • a front mold plate is provided that is placed in contact with the casting melt.
  • a back mold plate is provided that is coupled to the opposite side of the melt of the front mold plate. At least one of the front mold plate and the back mold plate includes the aforementioned mold plate for casting.
  • the casting mold of one embodiment of the present invention includes a plurality of mold plate assemblies joined to define a slab shape. At least one of the plurality of mold plate assemblies includes any one of the aforementioned mold plate assemblies for casting.
  • the mold structure according to the embodiments of the present invention it is possible to suppress the concentration of cooling in the corner portion of the cast when casting molten metal. Therefore, the cooling uniformity of the cast can be improved to suppress cracking or cracking of the cast, thereby improving the quality of the cast.
  • FIG. 1 is a perspective view schematically showing a front mold plate according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line II-II 'of the front mold plate of FIG.
  • FIG. 3 is a cross-sectional view taken along line III-III 'of the front mold plate of FIG.
  • FIG. 4 is a perspective view schematically illustrating a rear mold plate that may be combined with the front mold plate of FIG. 1.
  • FIG. 5 is a perspective view schematically showing a mold plate assembly according to another embodiment of the present invention.
  • FIG. 6 is a cross-sectional view taken along line VI-VI ′ of the mold plate assembly of FIG. 5.
  • FIG. 7 is a cross-sectional view taken along the line VII-VII ′ of the mold plate assembly of FIG. 5.
  • FIG. 8 is a perspective view schematically illustrating a casting mold including the casting front mold plate of FIG. 1.
  • FIG. 9 is a conceptual diagram schematically showing a process of manufacturing a cast using a casting mold.
  • FIG. 10 is a plan view schematically illustrating the casting mold of FIG. 8.
  • FIG. 11 is a front view schematically showing a casting mold front according to another embodiment of the present invention.
  • FIG. 12 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • Figure 13 is a perspective view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • FIG. 14 is a perspective view schematically showing a casting back mold plate that may be attached to the front mold plate of FIG. 1.
  • FIG. 14 is a perspective view schematically showing a casting back mold plate that may be attached to the front mold plate of FIG. 1.
  • FIG. 15 is a front view schematically showing the front mold plate for casting of FIG. 13.
  • 16 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • 17 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • FIG. 18 is a perspective view schematically showing a casting mold back mold according to another embodiment of the present invention.
  • 19 is a rear view schematically showing a casting mold back mold plate according to another embodiment of the present invention.
  • 20 is a perspective view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • FIG. 21 is a front view schematically showing the front mold plate for casting of FIG. 20.
  • FIG. 22 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • FIG. 22 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • Fig. 23 is a front view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • 24 is a perspective view schematically showing a casting mold back according to another embodiment of the present invention.
  • 25 is a rear view schematically showing a casting mold back mold plate according to another embodiment of the present invention.
  • 26 and 27 are graphs showing a simulation temperature distribution in one cross section of mold plates according to Comparative Examples and Experimental Examples.
  • the x-axis, the y-axis, and the z-axis are not limited to three axes on the Cartesian coordinate system, and may be interpreted in a broad sense including the same.
  • the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.
  • the center portion and the end portion can be interpreted in a relative meaning within the range conventionally recognized in the art. That is, the central portion may be interpreted in a broad sense including not only the center of the subject but also an adjacent portion thereof, and the end portion may be interpreted in a broad sense including the adjacent portion as well as the extreme end.
  • a cooling slot may refer to a portion of a cooling channel recessed or formed by a predetermined depth from one surface of an object.
  • the bottom face of the cooling slot may refer to the bottom in the depth direction, ie the end face in the recessed or recessed direction.
  • FIG. 1 is a perspective view schematically showing the front mold plate 110 according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along the line II-II 'of the front mold plate 110 of FIG. 3 is a cross-sectional view taken along line III-III 'of the front mold plate 110 of FIG.
  • Casting front mold plate 110 may have a first surface 111 and a second surface 112.
  • the mold plate 110 may constitute a part of a mold for a casting apparatus for forming a solid cast from the molten metal.
  • the casting apparatus may include a continuous casting apparatus for continuously forming cast pieces from the melt.
  • the molten metal is moved in the k-axis direction, and in this case, the casting direction may be the k-axis direction.
  • the first surface 111 may be a surface in contact with the molten metal
  • the second surface 112 may be an opposite surface opposite thereto.
  • the first surface 111 may include a recess 113 in a central portion thereof.
  • the concave portion 113 may refer to a portion recessed concave in the direction of the second surface 112, that is, the x-axis direction.
  • the elliptical cross-sectional shape of the recess 113 is illustrated by way of example and may be modified in various shapes.
  • the cross section of the recess 113 may have a shape of a circle, a polygon, or the like, and may further include at least one inflection portion.
  • the recess 113 may serve to widen the width of the injection portion of the molten metal for casting. This shape can be useful for reducing casting time by widening the injection portion of the melt when forming a thin cast.
  • the recess 113 may be formed by a predetermined depth along the casting direction from the top of the first surface 111. As a result, the depth of the recess 113 in the x-axis direction may gradually become shallower along the casting direction.
  • the lower portion of the first surface 111 may have an appropriate shape to define the shape of the slab.
  • the flat portion 114 may be disposed below the concave portion 113 to define the shape of one surface of the slab.
  • the planar portion 114 may extend from both sides of the recess 113 at the top of the first surface 111 to surround the recess 113.
  • the second surface 112 is a surface opposite to the first surface 111 and includes a plurality of first slots 115 arranged in parallel and extending in a casting direction (-z direction), which is a direction from top to bottom. Formed.
  • the width of the first slots 115 disposed at the center of the second surface 112 is wider than the width of the first slots 115 disposed at the edge of the second surface 112.
  • Cooling medium such as cooling water, may flow through the first slots 115, which may be used for initial or primary cooling of the melt on the first surface 111.
  • the first slots 115 may not be exposed from the first surface 111 so as not to directly contact the molten metal.
  • the front mold plate 110 may be made of a material having a high thermal conductivity, such as copper or copper alloy.
  • the number of the first slots 115 is exemplarily illustrated, but the present invention is not limited thereto.
  • the first slots 115 may be arranged in parallel along the casting direction (z-axis direction) of the cast steel.
  • the first slots 115 may be disposed in a symmetrical structure with respect to an axis parallel to the casting line or the casting direction (z-axis line) passing through the center of the second surface 112 for uniformity of cooling.
  • the structure and arrangement of the first slots 115 may be asymmetrically modified to adjust the cooling distribution.
  • the first slots 115 may be recessed from the second surface 112 in the direction of the first surface 111 (-x-axis direction) by a predetermined depth or may be formed to be pi.
  • the cooling medium flows from the lower ends of the first slots 115 and flows along the first slots 115, that is, in a direction opposite to the casting direction of the molten metal (z direction), and then flows out to the upper ends of the first slots 115.
  • the distance from the bottom surface of the first slots 115 to the first surface 111 may be constant. Even in this case, since the cooling medium gradually warms up as it passes through the first slots 115, the cooling rate may gradually increase along the casting direction (+ z direction).
  • the distance from the bottom surface of the first slots 115 to the first surface 111 may be appropriately modified to further adjust the cooling rate along the casting direction of the melt.
  • the distance from the bottom surface of the first slots 115 to the first surface 111 is from top to bottom of the first surface 111. It can get smaller.
  • the width of the first slots 115 disposed at the center of the second surface 112 is wider than the width of the first slots 115 disposed at the edge of the second surface 112.
  • the width of the first slots 115 may be narrower from the center portion of the second surface 112 toward the edge (see t1, t2, t3, and t4).
  • the width change of the first slots 115 may be arranged in a symmetrical structure with respect to the axis parallel to the casting line or the casting direction (z-axis line) passing through the center of the second surface 112 for cooling symmetry. .
  • the back mold plate 120 may also be referred to as a water jacket.
  • the back mold plate 120 may have second slots 125 and 126 formed on one surface 121. 4 illustrates a case in which two second slots 125 and 126 are formed, but the number of second slots may be variously modified.
  • the rear mold plate 120 When the rear mold plate 120 is attached to the front mold plate 110, one surface 121 is in contact with the second surface 112 of the front mold plate 110. In this case, the second slots 125 and 126 intersect the first slots 115.
  • the rear mold plate 120 may be formed of copper alloy and / or stainless steel. The same is true in the following embodiments and modifications.
  • FIG. 5 is a cross-sectional view taken along the line VI-VI 'of the mold plate assembly of FIG. 5 and FIG. 7 is a cross-sectional view taken along the line VII-VII' of the mold plate assembly of FIG.
  • the first slots 115 of the front mold plate 110 together with one surface 121 of the rear mold plate 120 form first channels through which a cooling medium may pass.
  • the second slots 125 and 126 of the rear mold plate 120 also form second channels through which the cooling medium can pass along with the second surface 112 of the front mold plate 110.
  • the cooling medium supplied through the inlet 123 which may be formed on the other surface 122 of the rear mold plate 120, passes through the second slot of the rear mold plate 120 to form the front mold plate 110.
  • the cooling medium in the first slots 115 of the front mold plate 110 may also flow into the first slots 115, and conversely through the second slot of the back mold plate 120. It may be discharged to the outside through the outlet 124, which can be formed on the other surface 122 of the.
  • FIG. 8 is a perspective view schematically showing a casting mold 100 including the casting front mold plate 110 of FIG. 1.
  • the casting mold 100 includes a mold plate assembly 131 in which a front mold plate 110 as shown in FIG. 1 and a rear mold plate 120 as shown in FIG. 4 are combined. ).
  • the casting mold 100 includes mold plate assemblies 132, 133, and 134 in addition to the mold plate assembly 131, such that four mold plate assemblies 131, 132, 133, and 134 are illustrated in FIG. 8.
  • the shape of the molten metal that is injected into the mold 100 through the combined shape) is limited.
  • FIG. 8 exemplarily illustrates that an inlet 123 through which a cooling medium is introduced and an outlet 124 through which the cooling medium is discharged are formed in the rear mold plate 120.
  • inlets and outlets may be formed in the rear mold plates of the other mold plate assemblies 132, 133, and 134.
  • FIG. 9 is a conceptual diagram schematically illustrating a process of manufacturing a cast using the casting mold 100 as illustrated in FIG. 8.
  • the molten metal 2 formed at a high temperature flows into the mold 100 through the immersion nozzle 3 under the tundish 1, and passes through the mold 100.
  • the solidification layer (4) is formed in the portion adjacent to the inner surface of the initial solidification process.
  • After passing through the mold 100 it is cooled by a cooling medium sprayed through the spray nozzle 5 or the like, and the proportion of the solidified layer 4 is increased, so that the slab 6 having a predetermined shape, for example, a slab. And the like.
  • It is moved by the guide roll 7 until it is a final product and / or after the final product, and as shown in FIG. 5, a plurality of spray nozzles 5 may be arranged, and the spray nozzles 5 and the guide rolls may be disposed.
  • (7) may be arranged alternately.
  • the initial solidification process of the molten metal (2) flowing into the mold 100 in such a slab manufacturing process is an important factor that determines the properties of the (sequential) casting is completed.
  • the cooling medium is present in the first slots and the second slots formed in the front mold plate 110 and / or the rear mold plate 120, as described above during the casting process, the mold 100 by the cooling medium
  • the inner surface of, that is, the other surface of the front mold plate 110 is cooled. Accordingly, the portion in contact with the other surface of the front mold plate 110 of the molten metal introduced into the mold 100 is cooled to form the solidification layer 4 in the initial solidification process.
  • the solidification layer 4 during the initial solidification process is a solidification shell, and plays an important role in determining the basic shape and surface quality of the slab 6, which is the final product. Therefore, it is important to form a solidified shell having appropriate strength and no cracking of the surface to a uniform thickness.
  • the thickness of the solidification shell is not constant, so that the shape of the cast steel, which is the final product, may be distorted or cracks may occur on the surface of the cast steel.
  • FIG. 10 which is a plan view schematically showing the casting mold 100 of FIG. 8
  • the cooling effect by the adjacent mold plate assemblies is simultaneously received.
  • the molten metal in the mold 100 receives the cooling effect by the mold plate assembly 132 and the mold plate assembly 133 simultaneously.
  • the cooling effect and the mold plate assembly ( The cooling effect by the first slots of 133 is simultaneously received, so that the cooling effect is relatively larger than in the other parts not indicated by the dotted line, which lowers the uniformity of the thickness of the solidification shell to be formed, thereby solidifying the shell. Cracks may occur on the surface, the shape of the cast steel, which is the product during cooling by the spray nozzle 5 or the final product after cooling, may be distorted, or cracks may occur on the surface of the cast steel.
  • the width of the first slot at the center portion is wider than the width of the first slot at the edge, thereby preventing such a phenomenon from occurring. have. That is, even though the portion receiving the cooling effect by the mold plate assembly 132 and the cooling effect by the mold plate assembly 133 at the same time, the cooling of the portion of the first slots of the mold plate assembly 132 is affected. Since the width of the first slot is narrower than the width of the first slot which affects the cooling of the other part of the first slots of the mold plate assembly 132, consequently the cooling of the molten metal to a portion adjacent to the inner surface of the mold 100. The effect can be made uniform.
  • the uniformity of the thickness of the solidification shell during the initial solidification process is kept constant and the cracks on the surface can be effectively prevented.
  • the shape of the cast product which is the product during cooling by the spray nozzle 5 or the like or the final product after cooling, is not distorted. Without causing cracks or the like on the surface of the cast steel, high quality cast steel can be produced with high yield.
  • the front mold plates for casting according to Comparative Examples and Experimental Examples were made of the same copper alloy, and their thermal conductivity was about 320 W / mK, and the first slot had the same cooling water as about 30 ° C. as the cooling medium. Assume that it is supplied to the center part. It is assumed that the molten metal is supplied at about 1500 ° C during the casting process.
  • the casting front mold plate according to the comparative example has first slots extending in parallel with the casting direction and having a constant depth regardless of the position.
  • the casting front mold plate according to the experimental example also includes first slots extending parallel to the casting direction.
  • the width of the first slot in the center portion is wider than the width of the first slot in the edge.
  • Casting front mold plate according to the experimental example may correspond to the mold plate 110 of FIG.
  • This temperature distribution shows that in the casting front mold plate according to the experimental example, the cooling rate at the center thereof is greater than the cooling rate at the end thereof.
  • the temperature distribution for the other half model can be understood to be symmetrical with respect to the center part. Therefore, as described above, the cooling rate at both ends of the front mold plate for casting can be adjusted to be lower than the cooling rate at the center thereof. It is also possible to avoid large fluctuations in temperature.
  • This cooling rate distribution of the unitary mold front face mold plate may contribute to the uniformity of the cooling rate distribution in the casting mold 100 as shown in FIG. 8 as described above.
  • the width of the first slot 115 at the edge of the second slot 115 at the center portion is as described above.
  • the thickness from the bottom surface to the first surface 111 of the first slot 115, which is disposed at the center of the second surface 112 is smaller than the second width of the first slots 115. It may be made smaller than the thickness from the bottom surface of the thing arrange
  • the widths of the adjacent first slots 115 become narrower from the center to the edge of the second surface 112 (t1, t2). , t3 and t4).
  • the width of the first slots formed on the edge side may be narrower.
  • the present invention is not limited thereto.
  • the width t1 of the first slots 115 is the same in the center portion, and then t2,
  • the width of the first slots 115 may be narrowed at the edge as indicated by t3 or the like.
  • the width of the first slots 115 may be the same between the center and the edge, as indicated by t2. That is, the width t1 of the first slot 115 located at the center of the second surface 112 of the front mold plate 110 may be wider than the width t3 of the first slot 115 located at the edge.
  • the width of the first slots located at the center may be considered to be wider than the width of the first slots located at the edge.
  • the distance between the centers of the adjacent first slots may be constant. That is, by making the width of the first slot at the edge narrower than the width of the first slot at the center in a state where the distance between the centers of the adjacent first slots is constant, the entire inner surface of the mold having such a front mold plate is reduced. The molten metal in the mold can be subjected to a uniform cooling effect.
  • FIG. 12 is a front view schematically showing a casting front mold plate 110 according to another embodiment of the present invention.
  • the casting front mold plate 110 according to the present embodiment is different from the casting front mold plate according to the embodiment described above with reference to FIG. 11, further including a second slot.
  • two second slots 117 and 118 are further provided, but may be one or plural.
  • Such a second slot may be formed on the second surface 112 on which the first slots 115 are formed so as to intersect the first slots 115.
  • the first slots are formed on the front mold plate and the second slots are formed on the back mold plate, so that the first slots of the front mold plate and the back mold plate are combined with each other.
  • the surface in the front mold plate direction of the rear mold plate forms first channels
  • the second slot in the rear mold plate and the surface of the rear mold plate direction of the front mold plates form the second channel.
  • the front mold plate 110 according to the present embodiment as shown in FIG. 12, the first slots 115 and the second slots 117 and 118 in the second 112 of the front mold plate 110. ) Is formed.
  • the first slots 115 and the second slots 117 and 118 of the front mold plate 110 may face the front mold plate 110 in the direction of the front mold plate 110. Together, the first channels and the second channels are formed.
  • the inlet and outlet of the cooling medium may be formed on the opposite side of the rear mold plate.
  • the width of the first slot at the center portion is wider than the width of the first slot at the edge, thereby producing a high quality cast when manufacturing the cast through the mold using the same To manufacture.
  • the casting mold plate assembly may be a form in which the front mold plate and the rear mold plate are combined, for example, any one of the components indicated by reference numerals 131 and 132 in FIG. 8.
  • the mold mold assembly for casting according to the present embodiment may be any one of the front mold plates according to the above-described embodiments and modifications thereof, or also the back mold plate according to the above-described embodiments and modifications thereof. It may be provided with any one of them. That is, a plurality of first slots arranged in parallel may be formed on a surface of the front mold plate in the rear mold plate direction, and the width of the first slot at the center may be wider than the width of the first slot at the edge.
  • the mold 100 of the shape as shown in Figure 8 formed by using a plurality of such mold plate assemblies there is no cracks in the casting process, so that a solid shell of a constant thickness is formed, resulting in high quality Cast steels can be produced in high yields.
  • the other surface of the front mold plate facing the surface in the direction of the rear mold plate is a surface in contact with the molten metal, and the other surface of the front mold plate facing the surface of the front mold plate direction is on the cooling medium inlet 123 and the outlet 124. Can be formed.
  • the first slots formed on the edge of the casting mold plate assembly may have a narrower width, and specifically, the width of the first slot narrows toward the edge from the center of the casting mold plate assembly. It may be.
  • the first slots may maintain a constant width at the center part, in which case the width of the first slot at the center part is wider than the width of the first slot at the edge. The effect as shown can be obtained.
  • the distance between the centers of the adjacent first slots may be constant. That is, by making the width of the first slot at the edge narrower than the width of the first slot at the center while the distance between the centers of the adjacent first slots is constant, the entire inner surface of the mold having such mold plate assemblies is provided. The molten metal in the mold can be subjected to a uniform cooling effect.
  • a second slot intersecting the first slots is further formed on at least one of a surface in the front mold plate direction of the front mold plate and a surface in the front mold plate direction of the rear mold plate.
  • the first slots are formed on the surface in the direction of the rear mold plate of the front mold plate
  • the second slot is either one of the surface in the direction of the rear mold plate of the front mold plate and the surface of the front mold plate of the rear mold plate. It may be formed in.
  • the first slots are formed on the surface of the front mold plate in the direction of the rear mold plate
  • the second slot is It is a case where it is formed in the surface in the front mold plate direction of a back mold plate.
  • a casting mold including a plurality of mold plate assemblies coupled to define a slab shape.
  • the casting mold may include at least one of the mold plate assemblies according to the above-described embodiments.
  • the casting mold may include at least one of the casting mold plates according to the above-described embodiments.
  • This casting mold may be of the form, for example, as shown in FIG. 8.
  • FIG. 13 is a perspective view schematically showing a casting front mold plate according to another embodiment of the present invention.
  • FIG. 14 is a perspective view schematically showing a casting back mold plate that may be attached to the front mold plate of FIG. 1.
  • FIG. 15 is a front view schematically showing the front mold plate for casting of FIG. 13.
  • first slots 111, 112, 112 ′, 113, 113 ′, 114 and 114 ′ arranged in parallel on one surface 110 a of the casting front mold plate 110.
  • the other surface (opposite surface) facing the one surface 110a is a surface in contact with the molten metal as described later.
  • the first slots 111, 112, 112 ', 113, 113', 114, and 114 ' have a central distance between the first slots in the center portion smaller than the center distance between the first slots in the edge portion. It is formed to be.
  • the center distance in two adjacent first slots means a distance from the center in the width of one first slot to the center in the width of another adjacent first slot.
  • the center distance t1 between the first slot 111 and the first slot 112 is the center distance between the first slot 113 and the first slot 114. (t3) or smaller than the central distance t3 between the first slot 113 'and the first slot 114'.
  • the center distance t3 between the first slot 113 and the first slot 114 and the center distance t3 between the first slot 113 ′ and the first slot 114 ′ are the same. However, this is merely exemplary and may of course be different. The same is true in the following embodiments and modifications. The same applies to the embodiments and modifications described later.
  • the back mold plate 120 may also be referred to as a water jacket.
  • the back mold plate 120 may have a second slot formed on one surface 120a.
  • two second slots 127 and 128 are formed, but the number of second slots may be one, or a plurality of second slots.
  • the second slots 127 and 128 intersect the first slots 111, 112, 112 ′, 113, 113 ′, 114, and 114 ′.
  • the front mold plate 110 and the rear mold plate 120 When the front mold plate 110 and the rear mold plate 120 are combined, this becomes a mold plate assembly.
  • the first slots 111, 112, 112 ′, 113 and 113 of the front mold plate 110 are formed.
  • ', 114 and 114' together with one surface 120a of the rear mold plate 120 form first channels through which the cooling medium can pass.
  • the second slots 127 and 128 of the rear mold plate 120 also form second channels through which the cooling medium can pass along with the one surface 110a of the front mold plate 110.
  • the first slots 111, 112, 112 ′, 113, 113 ′, 114 and 114 ′ are face 110a in the direction of the rear mold plate 120 of the front mold plate 110.
  • the second slots 127 and 128 are formed on the surface 120a of the rear mold plate 120 in the direction of the front mold plate 110.
  • the cooling medium supplied through an inlet (not shown) which may be formed on the other surface 120b of the rear mold plate 120 passes through the second slot of the rear mold plate 120 to form the front mold plate 110.
  • First slots 111, 112, 112 ′, 113, 113 ′, 114, 114 ′ of the first slots and conversely, first slots 111, 112, 112 ′, 113 of the front mold plate 110.
  • 113 ', 114, 114' through the outlet (not shown) can be formed on the other side (120b) of the rear mold plate 120 through the second slot of the rear mold plate 120 It can be discharged to the outside.
  • the center distance between the first slots adjacent to each other toward the edge of the front mold plate 110 increases. That is, the center distance t2 between the first slot 112 and the first slot 113 is wider than the center distance t1 between the first slot 111 and the first slot 112, and the first slot is larger.
  • the center distance t3 between the first slot 113 and the first slot 114 is shown to be wider than the center distance t2 between the 112 and the first slot 113.
  • the first slots formed on the edge side may have a wider center distance between the adjacent first slots.
  • the present invention is not limited thereto.
  • the center distance t1 between the first slot 112 and the first slot 113 is the same, and the first slot (r) is smaller than the center distance t1 between the first slot 112 and the first slot 113.
  • the central distance t2 between 113 and the first slot 114 may be wider.
  • the center distance t2 between the first slot 113 and the first slot 114 and the center distance t2 between the first slot 114 and the first slot 115 may also be the same.
  • the center distance t1 between the first slots 111 and 112 located at the center of the one surface 110a of the front mold plate 110 is the center distance t3 between the first slots 115 and 116 located at the edge thereof. Narrower than).
  • the center distance between the first slots located in the center is constant but may be considered to be narrower than the center distance between the first slots located on the edge.
  • the center distance between the first slot 111 and the first slot 112 is wider than the center distance between the first slot 112 and the first slot 113, and the first slot 112 and the first slot ( The center distance between 113 may be wider or narrower than the center distance between the first slot 113 and the first slot 114.
  • the central distance between the first slot 111 and the first slot 112 located at the center portion is shorter than the central distance between the first slot 115 and the second slot 116 located at the edge.
  • FIG. 17 is a front view schematically showing a casting front mold plate 110 according to another embodiment of the present invention.
  • the casting front mold plate 110 according to the present embodiment is different from the casting front mold plate according to the embodiment described above with reference to FIG. 13 and the like, and further includes a second slot.
  • two second slots 117 and 118 are further provided, but one or more may be provided.
  • the second slots intersect the first slots 111, 112, 112 ′, 113, 113 ′, 114 and 114 ′, so that the second slots 111, 112, 112 ′, 113, 113 ′, 114. , 114 ') may be formed on one surface 110a.
  • first slots are formed on the front mold plate and second slots are formed on the rear mold plate, so that when the front mold plate and the rear mold plate are joined, the first slot of the front mold plate is formed.
  • the first mold channels are formed on the surface of the back mold plate in the direction of the front mold plate, and the second slots of the back mold plate and the surface of the back mold plate of the front mold plate form the second channel.
  • the front mold plate 110 according to the present embodiment as shown in FIG. 71
  • the first slots 111, 112, 112 ′, 113 and 113 ′ are formed on one surface 110 a of the front mold plate 110.
  • 114 and 114 'and second slots 117 and 118 are formed.
  • the first slots 111, 112, 112 ′, 113, 113 ′, 114 and 114 ′ and the second slots 117 and 118 of the front mold plate 110 are formed together with the surface of the rear mold plate in the direction of the front mold plate 110.
  • the inlet and outlet of the cooling medium may be formed on the opposite side of the rear mold plate.
  • the center distance between the first slots in the center portion is smaller than the center distance between the first slots in the edge, thereby producing a cast through the mold using the same This allows the production of high quality casts.
  • the first slots are formed on the front mold plate, but the present invention is not limited thereto. That is, according to another embodiment of the present invention as shown in Figure 18, the first slots 121, 122, 122 ', 123, 123', 124, 124 'of the rear mold plate 120 It may be formed on one surface 120a.
  • the one surface 120a is a surface facing the front mold plate when it is combined with the front mold plate, and a cooling medium inlet and an outlet may be formed on the other surface opposite to the one surface 120a.
  • the center distance between the first slots in the center portion is smaller than the center distance between the first slots in the edge portion.
  • the rear mold plate 120 is coupled to the front mold plate having a flat surface in the direction of the rear mold plate, and thus, the first slots 121, 122, 122 ′, 123, 123 ′, 124, and 124 of the rear mold plate 120. ') And the surface of the front mold plate in the direction of the rear mold plate 120 form the first channels.
  • the first slots formed on the edge of the one surface 120a may have a larger center distance between the adjacent first slots, and specifically, in the central portion of the one surface 120a.
  • the center distance between the neighboring first slots may be wider toward the edge.
  • the present invention is not limited thereto, and although the center distance between the plurality of first slots (eg, five) first slots in the center of the rear mold plate is constant, the center distance between the first slots in the center is the first slot of the edge.
  • Various modifications are possible, such as to be narrower than the center distance between them.
  • the center distance between a plurality of (eg five) first slots in the center of the rear mold plate is not constant, the center distance between one first slot in the center and the other adjacent first slot is the first slot in the edge. It may be narrower than the center distance between them.
  • FIG. 19 is a rear view schematically showing the back mold plate 120 according to another embodiment of the present invention.
  • the back mold plate 120 according to the present embodiment is different from the back mold plate according to the above-described embodiment with reference to FIG. 18.
  • the first slots 121, 122, 122 ′, 123, 123 ′, 124 and 124 are different.
  • a second slot intersecting with ') is further formed on the one surface 120a.
  • two second slots 127 and 128 are formed, but the present invention is not limited thereto, and the number of second slots may be one or plural. to be.
  • the first slots 121, 122, 122 ′, 123, of the rear mold plate 120 are formed.
  • 123 ', 124, 124' and the second slots 127, 128 form the first channels and the second channels together with a flat surface in the direction of the back mold plate of the front mold plate, thus forming the back mold plate.
  • Cooling medium that enters through the inlet which may be formed at 120 is introduced into the first channels through the second channel to cool the front mold plate, and then is formed on the rear mold plate 120 through the second channel. Can be discharged through an outlet.
  • the front mold plate may be damaged in the process of contact with the molten metal may require periodic replacement.
  • the back mold plate according to the present embodiment since the first slots and the second slots are formed in the back mold plate, a slot or the like does not need to be formed on the surface of the front mold plate in the direction of the back mold plate. Therefore, when using the back mold plate 120 according to the present embodiment, it is possible to reduce the manufacturing of the front mold plate to be replaced periodically with consumables.
  • the above-described change in cooling distribution can be described in more detail with reference to the simulation results below.
  • the casting front mold plate according to the comparative example has first slots extending in parallel with the casting direction and having a constant depth regardless of the position.
  • the casting front mold plate according to the example also has first slots extending parallel to the casting direction.
  • the center distance of the first slots in the center portion is shorter than the center distance of the first slots in the end portion.
  • Other simulation conditions are the same as in FIG.
  • the temperature difference between the center portion C and the end portion E is not large, but the temperature fluctuates like a wave as it passes across the first slots. Able to know.
  • the temperature fluctuates from the central portion (C) toward the end (E) while the large fluctuation of the temperature as in the comparative example does not appear.
  • This temperature distribution shows that in the casting front mold plate according to the experimental example, the cooling rate at the center thereof is greater than the cooling rate at the end thereof.
  • the temperature distribution for the other half model can be understood to be symmetrical with respect to the center part. Therefore, as described above, the cooling rate at both ends of the front mold plate for casting can be adjusted to be lower than the cooling rate at the center thereof. It is also possible to avoid large fluctuations in temperature.
  • This cooling rate distribution of the unitary mold front face moldplate may contribute to the uniformity of the cooling rate distribution in the casting mold as described above.
  • FIG. 20 is a perspective view schematically showing a casting front mold plate 110 according to another embodiment of the present invention
  • FIG. 21 is a front view schematically showing the casting front mold plate 110 of FIG. 20.
  • the back mold plate may refer to FIG. 14.
  • a plurality of first slots 111, 112, 112 ′, 113 and 113 ′ arranged in parallel are formed on one surface 110 a of the front mold plate 110 for casting according to the present embodiment.
  • the other surface (opposite surface) facing the one surface 110a is a surface in contact with the molten metal as described later.
  • These first slots 111, 112, 112 ', 113, 113' are formed such that the width of the first slot in the center portion is wider than the width of the first slot at the edge.
  • the width t1 of the first slot 111 is formed to be wider than the width t2 of the first slot 112 or the width t2 of the first slot 112 '.
  • the width t2 of the first slot 112 and the width t2 of the first slot 112 ' are shown to be the same, but this is merely an example and may be different.
  • the width t1 of the first slot 111 and the width t1 of the first slot 112 are shown in FIG. ) May be the same, and the width t2 of the first slot 113 may be narrower than the width t1 of the first slot 112.
  • the width t2 of the first slot 113 and the width t2 of the first slot 114 may also be the same. That is, the width t1 of the first slot 111 located at the center of the one surface 110a of the front mold plate 110 may be wider than the width t3 of the first slot 115 located at the edge.
  • the width of the first slots located at the center may be considered to be wider than the width of the first slots located at the edge.
  • the width of the first slot 111 is wider than the width of the first slot 112, the width of the first slot 112 may be wider or narrower than the width of the first slot 113 can be variously modified. Do. In any case, it is sufficient if the width of the first slot 111 located at the center is wider than the width of the first slot 115 located at the edge. The same is true in the following embodiments and modifications.
  • the distance between the centers of the adjacent first slots may be constant. That is, by making the width of the first slot at the edge narrower than the width of the first slot at the center in a state where the distance between the centers of the adjacent first slots is constant, the entire inner surface of the mold having such a front mold plate is reduced. The molten metal in the mold can be subjected to a uniform cooling effect.
  • FIG. 23 is a front view schematically illustrating a casting front mold plate 110 according to another embodiment of the present invention.
  • the casting front mold plate 110 according to the present embodiment is different from the casting front mold plate according to the embodiment described above with reference to FIG. 22, and further includes a second slot.
  • two second slots 117 and 118 are further provided, but may be one or plural.
  • the second slots such as the first slots 111, 112, 112 ′, 113, 113 ′, 114, 114 ′, 115, and 115 ′ intersect with the first slots 111, 112, 112 ′, 113, 113 ′, 114. , 113 ', 114, 114', 115, and 115 'may be formed on one surface 110a.
  • the width of the first slot at the center portion is wider than the width of the first slot at the edge, thereby producing a high quality cast when manufacturing the cast through the mold using the same To manufacture.
  • the first slots are formed on the front mold plate, but the present invention is not limited thereto. That is, according to another embodiment of the present invention as shown in FIG. 24, the first slots 121, 122, 122 ′, 123, and 123 ′ are disposed on one surface 120a of the rear mold plate 120. It may be formed.
  • the one surface 120a is a surface facing the front mold plate when it is combined with the front mold plate, and a cooling medium inlet and an outlet may be formed on the other surface opposite to the one surface 120a.
  • the width of the first slot in the center portion is wider than the width of the first slot in the edge portion.
  • the rear mold plate 120 is coupled to the front mold plate having a flat surface in the direction of the rear mold plate, thereby forming the first slots 121, 122, 122 ′, 123, and 123 ′ of the rear mold plate 120 and the front mold.
  • the surface of the plate toward the rear mold plate 120 forms the first channels.
  • the width of the first slot formed at the edge of the one surface 120a may be narrower. Specifically, the width of the first slot may be narrower from the center portion of the surface 120a to the edge. can do.
  • the present invention is not limited thereto, and as described above with respect to the front mold plate with reference to FIG. 22, the widths of the plurality of (eg five) first slots in the center portion of the rear mold plate are constant. Various modifications are possible such that the width of the first slot in the center portion can be wider than the width of the first slot in the edge. Of course, even if the width of the plurality of (eg five) first slots in the central portion of the rear mold plate is not constant, the width of one first slot in the center may be wider than the width of the first slot in the edge.
  • FIG. 25 is a rear view schematically showing the back mold plate 120 according to another embodiment of the present invention.
  • the back mold plate 120 according to the present embodiment is different from the back mold plate according to the above-described embodiment with reference to FIG. 24.
  • the first slots 121, 122, 122 ′, 123, 123 ′, 124 and 124 are different.
  • Second slots intersecting with '125' and 125 ' are further formed on the one surface 120a.
  • two second slots 127 and 128 are formed, but the present invention is not limited thereto, and the number of second slots may be one or plural. to be.
  • the first slots 121, 122, 122 ′, 123, of the rear mold plate 120 are formed.
  • 123 ', 124, 124', 125, and 125 'and the second slots 127 and 128 form the first channels and the second channels together with a flat surface in the direction of the rear mold plate of the front mold plate. Accordingly, the cooling medium entering through the inlet which may be formed in the rear mold plate 120 flows into the first channels through the second channel to cool the front mold plate, and then again through the second channel, the rear mold plate ( 120 may be discharged through an outlet that may be formed.
  • the widths of the first slots 121, 122, 122 ′, 123, 123 ′, 124, 124 ′, 125 and 125 ′ formed in the rear mold plate 120 are narrower at the edge than at the center part, As described in the above embodiments, it is possible to manufacture high quality cast steel with high yield.
  • the distance between the centers of the adjacent first slots may be constant. That is, by making the width of the first slot at the edge narrower than the width of the first slot at the center in a state where the distance between the centers of the adjacent first slots is constant, the entire inner surface of the mold having such a back mold plate is reduced. The molten metal in the mold can be subjected to a uniform cooling effect.
  • Casting mold plate assembly may mean a form in which the front mold plate and the rear mold plate is combined.
  • Such a mold mold assembly for casting according to the present embodiment is any one of the front mold plates according to the above-described embodiments and variations thereof, and also the back mold plate according to the above-described embodiments and variations thereof. It may be provided with any one of them. Through this, a mold formed by using a plurality of such mold plate assemblies may be formed.
  • the mold structure according to the invention can be used in the casting industry of various metals.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

La présente invention concerne une plaque de lingotière de coulée, un ensemble de plaque de lingotière, et un moule. La plaque de lingotière comporte: une première surface, et une seconde surface qui est en regard de la première surface, et est formée avec une pluralité de premières fentes qui sont disposées en parallèle et qui s'étendent selon une direction de coulée, ladite direction s'étendant depuis la partie supérieure vers la partie inférieure. Parmi les premières fentes, la largeur des fentes disposées dans la partie centrale de la seconde surface est supérieure à la largeur des fentes disposées au niveau des bords de la seconde surface.
PCT/KR2010/005357 2010-01-29 2010-08-13 Plaque de lingotière de coulée, ensemble de plaque de lingotière, et moule Ceased WO2011093564A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2010-0008262 2010-01-29
KR1020100008265A KR20110088660A (ko) 2010-01-29 2010-01-29 주조용 몰드플레이트, 주조용 몰드플레이트 어셈블리 및 이를 구비하는 주조용 몰드
KR1020100008262A KR20110088657A (ko) 2010-01-29 2010-01-29 주조용 몰드플레이트, 주조용 몰드플레이트 어셈블리 및 이를 구비하는 주조용 몰드
KR10-2010-0008265 2010-01-29
KR1020100042168A KR20110122587A (ko) 2010-05-04 2010-05-04 주조용 전면 몰드플레이트, 주조용 몰드플레이트 어셈블리 및 이를 구비하는 주조용 몰드
KR10-2010-0042168 2010-05-04

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WO2011093564A1 true WO2011093564A1 (fr) 2011-08-04

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PCT/KR2010/005357 Ceased WO2011093564A1 (fr) 2010-01-29 2010-08-13 Plaque de lingotière de coulée, ensemble de plaque de lingotière, et moule

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WO (1) WO2011093564A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59225858A (ja) * 1983-06-06 1984-12-18 Nippon Steel Corp 連続鋳造用鋳型
JPH0673718B2 (ja) * 1989-05-26 1994-09-21 新日本製鐵株式会社 鋳片コーナー割れ抑止用連続鋳造鋳型
US20050188167A1 (en) * 2004-02-20 2005-08-25 Hewlett-Packard Development Company, L.P. Standalone memory device and system and method using such device
JP2007152432A (ja) * 2005-12-05 2007-06-21 Km Europ Metal Ag 金属を連続鋳造する金型

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59225858A (ja) * 1983-06-06 1984-12-18 Nippon Steel Corp 連続鋳造用鋳型
JPH0673718B2 (ja) * 1989-05-26 1994-09-21 新日本製鐵株式会社 鋳片コーナー割れ抑止用連続鋳造鋳型
US20050188167A1 (en) * 2004-02-20 2005-08-25 Hewlett-Packard Development Company, L.P. Standalone memory device and system and method using such device
JP2007152432A (ja) * 2005-12-05 2007-06-21 Km Europ Metal Ag 金属を連続鋳造する金型

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