WO2006094453A1 - Moule pour le moulage continu de billettes - Google Patents

Moule pour le moulage continu de billettes Download PDF

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Publication number
WO2006094453A1
WO2006094453A1 PCT/CN2006/000338 CN2006000338W WO2006094453A1 WO 2006094453 A1 WO2006094453 A1 WO 2006094453A1 CN 2006000338 W CN2006000338 W CN 2006000338W WO 2006094453 A1 WO2006094453 A1 WO 2006094453A1
Authority
WO
WIPO (PCT)
Prior art keywords
triangular
mold
narrow side
narrow
side wall
Prior art date
Application number
PCT/CN2006/000338
Other languages
English (en)
Chinese (zh)
Inventor
Fu Ping Tang
Jun Wang
Yong Gang Ma
Hao Dong Huang
Original Assignee
Angang Steel Company Limited
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 Angang Steel Company Limited filed Critical Angang Steel Company Limited
Publication of WO2006094453A1 publication Critical patent/WO2006094453A1/fr

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Classifications

    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting

Definitions

  • the present invention relates to a metal casting technique, and more particularly to a profiled crystallizer for slab continuous casting. Background technique
  • the straight parallel plate crystallizer is composed of two wide side walls and two narrow side walls of a movable position to form a cavity of the crystallizer, intersecting the wide side wall and the narrow side wall.
  • the four corners of the inner cavity are at right angles. Therefore, in the process of solidification of the molten steel into the shell in the right angle crystallizer, the molten steel in the corner portion is two-dimensionally cooled, and the solidification speed is fast, so that the whole solidification of the cast billet is uneven, and surface defects are likely to occur. Further, the slab cast by the right angle crystallizer is prone to corner cracks because the corner portion has a high cooling rate and the surface temperature is not uniform.
  • An object of the present invention is to provide a profiled crystallizer for slab continuous casting in which four corners of a cavity are rounded or straightly inclined to improve the corner quality of the slab.
  • the shaped crystallizer for slab continuous casting is composed of two wide side walls and two narrow side walls, on both sides of each narrow side wall, that is, The inner side of the connecting end of the wide side wall has a row of right-angled triangular-shaped convex edges, the triangular-shaped convex edge is inclined inward, one right-angled surface is combined with the inner surface of the narrow side wall, and the other right-angled surface and the side surface of the narrow side wall are On the same plane, that is, the extension of the side of the narrow side wall.
  • the inclined surface of the triangular convex edge may have a planar shape, and the straight oblique side of the triangular convex edge has a length of 1 to 15 for the X 1-15 leg.
  • the inclined surface of the triangular convex edge may also have a concave arc shape, and the triangular radius of the triangular convex edge is 1-15.
  • the narrow side walls and the triangular convex edges may be of a unitary structure or may be assembled and integrated.
  • the shaped crystallizer of the invention has the advantages of simple structure, reasonable design, simple operation and more convenient use, and the shape of the corner of the inner cavity of the crystal mold is changed by adopting four rows of right-angled triangular convex edges on two narrow side walls. , the original right angle is changed into a rounded corner or a straight oblique angle, so that the corner cooling during the solidification of the molten steel in the mold to form the shell is adjusted by the two-dimensional cooling to nearly one-dimensional cooling, and the cooling strength of the corner is lowered.
  • the effect is that the solidification of the shell is relatively uniform, thereby avoiding the problem that the corners of the slab are cooled and solidified unevenly and surface defects occur.
  • the mold is easy to process and maintain, and its equipment investment is low, while reducing losses and costs. Since the corners of the casting blank are rounded or beveled, the surface temperature is relatively uniform, and the temperature difference between the middle and the side is reduced, so that the problem of cracking due to the excessively low edge temperature during direct rolling can be avoided, and the shaped crystal of the present invention is used.
  • the utility model can improve the quality of the continuous casting billet of the pipeline steel, reduce the crack defects at the edge of the strip, and improve the labor productivity.
  • Figure 1 is a schematic view showing the structure of a narrow side wall having concave curved triangular shaped edges on both sides of the present invention.
  • FIG. 2 is a schematic structural view of a narrow side wall with flat triangular protrusions on both sides of the present invention.
  • Figure 3 is a schematic view showing the structure of the shaped crystallizer of the present invention.
  • the profiled crystallizer of the present invention is mainly composed of two wide side walls 2 and two narrow side walls 1.
  • the slanted surface of the triangular ridge 3 is inwardly connected, and one right angle surface is combined with the inner side surface of the narrow side wall 1, and the other right angle surface is on the same plane as the side surface of the narrow side wall 1, which is an extension of the side surface of the narrow side wall 1.
  • the narrow side wall 1 and the triangular ledge 3 or 4 of the present invention are preferably of unitary construction, but they may be combined into one body by an assembly method.
  • the purpose of changing the shape of the corner of the cavity of the crystallizer can be achieved without affecting the adjustment of the width of the crystallizer.
  • the invention can be formed by a triangular shape along a bevel shape The change is to change the shape of the corner of the cavity of the mold.
  • the cavity of the crystallizer is rounded; if a triangular convex edge with a slope is formed in a plane shape, (As shown in Figure 2), the cavity of the crystallizer is at a right angle.
  • the size of the triangular convex edge 3 of the present invention should be set as required, and the inclined surface is planar, and the straight oblique side of the triangular convex edge 4 has a length of 1 - 15 legs X 1-15 legs; the inclined surface is concave arc In the shape of the face, the radius of the fillet of the triangular protrusion 3 is 1-15 legs.
  • the invention can achieve the effect of reducing the cooling strength of the corner portion for various steel types such as pipeline steel, automobile and vehicle steel, structural steel, etc.
  • the solidification of the shell is relatively uniform, and the cooling and solidification of the slab corner portion is avoided to the utmost extent.
  • the problem of surface defects is uneven.
  • the straight-angled bevel is a 5-leg X 5 wake-up, or a profiled crystallizer with a radius of 5 mm.
  • a pipe test with a gauge of 135 mm X 1170 mm and grade X52 is carried out, and a conventional right-angle crystallizer is used.
  • Table 1 By comparison, it is not difficult to see that the temperature difference between the corners and the middle portion of the cast slab cast by the shaped crystallizer of the present invention is remarkably reduced, and the ratio of occurrence of cracks at the edges of the strip is also significantly reduced.

Landscapes

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

Abstract

L’invention concerne un moule constitué pour le moulage continu de métal et qui est composé de deux plaques larges et de deux plaques étroites. Des deux côtés de la plaque étroite, c’est à dire les parties latérales en bout desdites plaques, il existe un triangle droit protubérant sur toute la longueur de la plaque étroite. L’angle de biseau de l’angle droit pointe vers la cavité formée par les quatre plaques. Un côté de la protubérance de l’angle droit est en raccord avec la surface interne de la plaque étroite de l’autre côté de la protubérance du triangle droit. L’autre côté de la protubérance du triangle droit et le côté de la plaque étroite sont sur le même plan, c’est à dire que l’autre côté de la protubérance de l’angle droit se prolonge sur le côté de la plaque étroite. L’angle de biseau peut comporter une surface plate ou une surface concave à profil cambré. La structure du moule de la présente invention est simplifiée et raisonnable. Les quatre protubérances du triangle modifient la forme du coin de la cavité du moule, le refroidissement des coins du moule est amélioré, ainsi les défauts de surface provoqués par un refroidissement inégal des coins de la billette et les problèmes de fissures provoqués par les basses températures des coins pendant le laminage aux coins sont évités.
PCT/CN2006/000338 2005-03-07 2006-03-07 Moule pour le moulage continu de billettes WO2006094453A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2005200895944U CN2776595Y (zh) 2005-03-07 2005-03-07 一种板坯连铸用的异形结晶器
CN200520089594.4 2005-03-07

Publications (1)

Publication Number Publication Date
WO2006094453A1 true WO2006094453A1 (fr) 2006-09-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/000338 WO2006094453A1 (fr) 2005-03-07 2006-03-07 Moule pour le moulage continu de billettes

Country Status (2)

Country Link
CN (1) CN2776595Y (fr)
WO (1) WO2006094453A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039083A1 (fr) * 2009-09-29 2011-04-07 Siemens Vai Metals Technologies Gmbh Lingotière de coulée continue
CN103084550A (zh) * 2011-10-28 2013-05-08 宝山钢铁股份有限公司 一种改善连铸结晶器角部传热的方法及连铸结晶器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527959A (zh) * 2011-12-22 2012-07-04 莱芜钢铁集团有限公司 组合式结晶器
CN103317109B (zh) * 2012-03-19 2016-02-24 宝山钢铁股份有限公司 一种弱化连铸结晶器角部传热的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702299A (en) * 1984-11-05 1987-10-27 Kabel-Und Metallwerke Gutehoffnungshuette Ag Mold for continuous casting and method of making
US5191924A (en) * 1989-07-19 1993-03-09 Sollac Built-up ingot mold for the continuous casting of metal
US5467809A (en) * 1990-10-02 1995-11-21 Mannesmann Aktiengesellschaft Liquid-cooled ingot mold for the continuous casting of steel billets in the form of slabs
CN1266388A (zh) * 1997-08-04 2000-09-13 乔维尼·阿维迪 改进的用于连续浇铸钢板坯的接触式结晶器
CN1502432A (zh) * 2002-11-27 2004-06-09 张祝得 一种连铸机结晶器的拉坯工艺及其专用结晶器结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702299A (en) * 1984-11-05 1987-10-27 Kabel-Und Metallwerke Gutehoffnungshuette Ag Mold for continuous casting and method of making
US5191924A (en) * 1989-07-19 1993-03-09 Sollac Built-up ingot mold for the continuous casting of metal
US5467809A (en) * 1990-10-02 1995-11-21 Mannesmann Aktiengesellschaft Liquid-cooled ingot mold for the continuous casting of steel billets in the form of slabs
CN1266388A (zh) * 1997-08-04 2000-09-13 乔维尼·阿维迪 改进的用于连续浇铸钢板坯的接触式结晶器
CN1502432A (zh) * 2002-11-27 2004-06-09 张祝得 一种连铸机结晶器的拉坯工艺及其专用结晶器结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039083A1 (fr) * 2009-09-29 2011-04-07 Siemens Vai Metals Technologies Gmbh Lingotière de coulée continue
CN103084550A (zh) * 2011-10-28 2013-05-08 宝山钢铁股份有限公司 一种改善连铸结晶器角部传热的方法及连铸结晶器

Also Published As

Publication number Publication date
CN2776595Y (zh) 2006-05-03

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