EP1855824A1 - Procede de production d'une coquille pour la coulee continue et coquille pour la coulee continue - Google Patents

Procede de production d'une coquille pour la coulee continue et coquille pour la coulee continue

Info

Publication number
EP1855824A1
EP1855824A1 EP06723315A EP06723315A EP1855824A1 EP 1855824 A1 EP1855824 A1 EP 1855824A1 EP 06723315 A EP06723315 A EP 06723315A EP 06723315 A EP06723315 A EP 06723315A EP 1855824 A1 EP1855824 A1 EP 1855824A1
Authority
EP
European Patent Office
Prior art keywords
continuous casting
mold
casting mold
waves
mold according
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.)
Granted
Application number
EP06723315A
Other languages
German (de)
English (en)
Other versions
EP1855824B1 (fr
Inventor
Gereon Fehlemann
Albrecht Girgensohn
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.)
SMS Group GmbH
Original Assignee
SMS Demag AG
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 DE102005023745.2A external-priority patent/DE102005023745B4/de
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1855824A1 publication Critical patent/EP1855824A1/fr
Application granted granted Critical
Publication of EP1855824B1 publication Critical patent/EP1855824B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • B22D11/057—Manufacturing or calibrating the moulds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303752—Process

Definitions

  • the invention relates to a method for producing a continuous casting mold, in which at least one surface is mechanically processed, which has contact with molten material during the intended use of the mold. Furthermore, the invention relates to a continuous casting mold.
  • EP 1 099 496 A1 provides, in order to reduce the heat flow, mold plates completely or partially provided with a surface texture.
  • the texture is preferably generated by sand or shot peening after the mechanical processing. In this way, the roughness of that surface of the mold can be increased, which has contact with molten material under normal use of the continuous casting mold.
  • JP 10 193 042 A a continuous casting mold is described, wherein longitudinal grooves are deliberately introduced into the surface of the wide side plates. This is intended to ensure that the heat flux density in the casting mirror is reduced in order to avoid longitudinal cracks.
  • JP 02 020 645 A discloses a continuous casting mold, in which longitudinal grooves and transverse grooves are introduced in a predetermined pattern into the wide side plates. In this way, it is also desirable that the heat flux density in the casting mirror is reduced and thus the risk of longitudinal cracks is reduced.
  • BESTATIGUNGSKOPIE The introduced grooves are in the range of 0.5 to 1, 0 mm; the grid spacing is about 5 to 10 mm.
  • a continuous casting mold in which a reduction of the heat flux density is likewise sought, specifically in the upper region of the mold. This is achieved by a greater wall thickness of the mold in its upper region or by the use of more insulating material in this region.
  • the mold in its upper region can either consist entirely of this material or be coated on the water side with this material.
  • FR 2 658 440 describes a continuous casting mold in which a local reduction of the heat flux density is achieved by introducing grooves into the hot side of the mold and filling these grooves with a second material having low thermal conductivity. In addition, the entire surface of the mold is coated with this second material.
  • JP 06 134 553 A and JP 03 128 149 A describe the roughening of the surface of casting rolls, which is intended to bring about a reduction in the heat flow density in this application.
  • thermodynamic behavior of the mold and in particular their walls and improved usability in continuous casting should be achieved.
  • a good adhesion of the casting powder to the mold plate and a uniform distribution of the heat flow over the entire mold is desired.
  • the thickness and the structure of the G confusepulver Anlagen between the mold wall and the strand shell significantly determines the height of the heat flux density between steel and mold and thus the thermal load of both the strand shell and the mold material.
  • the friction between the broad sides and the narrow sides of the mold during the narrow side adjustment is as low as possible.
  • the aim is that a low heat flux density, the thermal load in the mold level is reduced, which should have a positive effect on the life of the mold.
  • the invention is therefore based on the object to provide a method for producing a continuous casting mold and a continuous casting mold, with the or with the mentioned desired properties are achieved as well as possible, this being achieved with the lowest possible production cost and thus at low cost should.
  • the solution of this object by the invention is characterized in that, as the last working step or as one of the last working steps in the production of the surface of the mold, a mechanical treatment is performed which produces an anisotropically structured surface.
  • the last working step is a milling process or a grinding process.
  • anisotropy is meant that surface characteristics change depending on the surface direction in which they are determined. In the surface of the mold in question this means in particular that parameters such. As measured roughness in the casting direction other values than perpendicular thereto, ie in the transverse direction to the casting direction.
  • the continuous casting mold which has at least one mechanically machined surface which, when used as intended, makes contact with molten material, is inventively characterized in that the surface has at least partially an anisotropic structure.
  • the surface of the mold in the casting direction has a greater roughness than in the direction transverse to this direction, viewed in each case in the surface plane.
  • the anisotropically structured surface may have cell-shaped and oriented elevations and depressions which extend in the direction transverse to the casting direction.
  • the elevations and depressions may be formed as waves whose peaks and troughs extend in the direction transverse to the casting direction (G);
  • the waves preferably have a substantially rounded shape in cross-section. It has proven useful if the height of the waves is between 2 ⁇ m and 250 ⁇ m, in particular between 10 ⁇ m and 50 ⁇ m.
  • the height of the waves on the surface can remain constant in the casting direction and / or transversely to the casting direction or can be variably adjusted.
  • the proposed invention is therefore based on the fact that the desired anisotropic surface structure is generated in the last step of the shaping, mechanical processing of the mold surface.
  • the machined surface can be advantageously designed so that in the casting another macroscopic structure is generated as transverse to the casting direction.
  • the microscopic roughness of the surface in the casting direction and across it can be designed differently.
  • the desired surface structure is formed during the mechanical, machining of the mold surface. This means that further processing steps, such. As the introduction of grooves in the surface, the coating of the surface in G confusespie- gel Scheme or the roughening of the surface by sand or shot peening, are not required, which makes the proposed invention economically.
  • the advantageous anisotropic surface structure can be produced without much effort not only in the production of molds, but also in each revision of the mold surface, which has to be done at certain intervals.
  • Fig. 2 shows schematically the profile of the surface of the mold plate in three-dimensional representation
  • FIG. 3 shows the enlarged section A-B shown in FIG. 1st
  • Fig. 1 the view of that surface of a mold plate of a continuous casting mold 1 is shown, which has in contact with the continuous casting mold 1 with molten material (steel) or the solidified strand shell contact. The strand shell thereby passes through the mold plate in the casting direction G.
  • the surface 2 is provided with a special structure:
  • the surface topology, in particular the roughness, of the surface 2 is anisotropic; H.
  • the mold plate is provided with a multiplicity of elevations and depressions, which are shown only very schematically in FIG.
  • the production of these elevations and depressions takes place during the last mechanical machining operation in the production of the mold plate.
  • the surface of the mold plate is milled in the last processing step in the Zeilenfräsclar.
  • z. B. a milling tool with a diameter of 100 to 150 mm used with conventional indexable inserts, z. B. made of hard metal, is provided.
  • the material removal during the last processing step is less than 1 mm, preferably less than 0.5 mm.
  • the desired surface structure can also be made by a grinding process.
  • the surface can be ground line-shaped.
  • the shape of the wave-like elevations and depressions can be generated by the surface contour of the grinding wheel or by the angle of attack of the grinding wheel to the disk surface.
  • FIG. 2 shows the profile of the finished surface in three-dimensional views.
  • the roughness of the surface in the casting direction G is greater than transverse to the casting direction Q.
  • the mold plate is thus provided with a plurality of elevations and depressions, which are shown in Fig. 1 only very schematically. The production of these elevations and depressions takes place during the last mechanical machining process in the manufacture of the mold plate.
  • the height H of the line-shaped elevations and depressions can be seen in FIG. 3 and is typically in the range of 2 ⁇ m to 250 ⁇ m, which can be influenced by the choice of the milling parameters. LIST OF REFERENCE NUMBERS

Landscapes

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

Abstract

L'invention concerne un procédé de production d'une coquille pour la coulée continue (1). Au moins une surface (2) qui est mécaniquement usinée, est mise en contact avec une matière en fusion lors de l'utilisation normale de la coquille. L'invention vise à obtenir une répartition uniforme du flux de chaleur sur la coquille. A cet effet, on effectue comme dernière opération lors la production de la surface (2) de la coquille, un usinage mécanique produisant une anisotropie superficielle. L'invention concerne également une coquille pour la coulée continue.
EP06723315.5A 2005-03-10 2006-03-09 Procédé de production d'une coquille pour la coulée continue et coquille pour la coulée continue Expired - Lifetime EP1855824B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005011532 2005-03-10
DE102005023745.2A DE102005023745B4 (de) 2005-03-10 2005-05-24 Verfahren zum Herstellen einer Stranggiesskokille und Stranggiesskokille
PCT/EP2006/002164 WO2006094803A1 (fr) 2005-03-10 2006-03-09 Procede de production d'une coquille pour la coulee continue et coquille pour la coulee continue

Publications (2)

Publication Number Publication Date
EP1855824A1 true EP1855824A1 (fr) 2007-11-21
EP1855824B1 EP1855824B1 (fr) 2021-02-17

Family

ID=36266231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723315.5A Expired - Lifetime EP1855824B1 (fr) 2005-03-10 2006-03-09 Procédé de production d'une coquille pour la coulée continue et coquille pour la coulée continue

Country Status (8)

Country Link
US (2) US20080173422A1 (fr)
EP (1) EP1855824B1 (fr)
JP (1) JP4559520B2 (fr)
KR (1) KR101152678B1 (fr)
CN (1) CN101137453B (fr)
CA (1) CA2597100C (fr)
ES (1) ES2864578T3 (fr)
WO (1) WO2006094803A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5606824B2 (ja) 2010-08-18 2014-10-15 株式会社不二製作所 金型の表面処理方法及び前記方法で表面処理された金型
DE102013114326A1 (de) * 2013-12-18 2015-06-18 Thyssenkrupp Steel Europe Ag Gießkokille zum Vergießen von Stahlschmelze
JP6413991B2 (ja) * 2015-09-14 2018-10-31 Ｊｆｅスチール株式会社 スラブの表面手入れ方法

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JPS5150819A (ja) * 1974-10-31 1976-05-04 Kawasaki Steel Co Renzokuchuzoyoigata
SU537749A1 (ru) * 1975-07-01 1976-12-05 Украинский научно-исследовательский институт металлов Кристаллизатор
JPS54141330A (en) * 1978-04-27 1979-11-02 Nippon Kokan Kk Surface curving process for cast mold for continuous cating
US4250950A (en) * 1978-11-03 1981-02-17 Swiss Aluminium Ltd. Mould with roughened surface for casting metals
EP0158898B1 (fr) * 1984-04-13 1990-06-06 Hans Horst Installation de coulée continue et son procédé de fabrication
JPS6192756A (ja) * 1984-10-12 1986-05-10 Sumitomo Metal Ind Ltd 鋳片表面割れ防止連続鋳造法および鋳型
JPH0220645A (ja) * 1988-07-08 1990-01-24 Nkk Corp 鋼の連続鋳造用鋳型
JPH03128149A (ja) * 1989-10-13 1991-05-31 Ishikawajima Harima Heavy Ind Co Ltd 双ロール式連鋳機
FR2684904B1 (fr) * 1991-12-11 1994-03-18 Usinor Sacilor Cylindre pour une machine de coulee continue de bandes metalliques, machine de coulee continue correspondante et procede de realisation d'un tel cylindre.
JP2974521B2 (ja) * 1992-10-27 1999-11-10 新日本製鐵株式会社 薄肉鋳片の連続鋳造用鋳型及びその表面加工方法
JPH07178526A (ja) * 1993-11-09 1995-07-18 Sumitomo Metal Ind Ltd 連続鋳造方法および装置
JP2971747B2 (ja) * 1994-08-09 1999-11-08 住友重機械工業株式会社 連続鋳造用モールドのモールド壁
US6024162A (en) * 1994-12-28 2000-02-15 Nippon Steel Corporation Continuous casting method for billet
JPH08206786A (ja) * 1995-01-31 1996-08-13 Shinko Metal Prod Kk 連続鋳造用鋳型
DE19508169C5 (de) * 1995-03-08 2009-11-12 Kme Germany Ag & Co. Kg Kokille zum Stranggießen von Metallen
JPH0994634A (ja) * 1995-09-29 1997-04-08 Kawasaki Steel Corp 連続鋳造用水冷鋳型
JPH09276994A (ja) * 1996-04-22 1997-10-28 Nippon Steel Corp 連続鋳造用鋳型
JP3380413B2 (ja) * 1997-01-07 2003-02-24 新日本製鐵株式会社 溶鋼の連続鋳造用鋳型
DE19748305A1 (de) * 1997-10-31 1999-05-06 Schloemann Siemag Ag Stranggießkokille
DE19919777C2 (de) * 1998-10-24 2001-07-26 Sms Demag Ag Verfahren zum Herstellen von Breitseitenplatten für Durchlaufkokillen
DE19953905A1 (de) * 1999-11-10 2001-05-17 Sms Demag Ag Verfahren und Vorrichtung zur Verminderung der Wärmeabfuhr einer Stranggußkokille
ES2211665T3 (es) * 1999-12-29 2004-07-16 Concast Standard Ag Procedimiento y dispositivo para la mecanizacion de paredes de cavidad de lingoteras de colada continua.
KR100668126B1 (ko) * 2000-05-12 2007-01-16 신닛뽄세이테쯔 카부시키카이샤 박육 주편 연속 주조용 냉각 드럼의 가공 장치
CN1201885C (zh) * 2002-06-18 2005-05-18 鞍山科技大学 连铸镀层沟槽内壁结晶器
DE10256751B4 (de) * 2002-10-17 2019-09-12 Sms Group Gmbh Stranggießkokille zum Gießen von Strängen aus Metallen, insbesondere aus Stahlwerkstoffen
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Also Published As

Publication number Publication date
ES2864578T3 (es) 2021-10-14
JP2008532767A (ja) 2008-08-21
EP1855824B1 (fr) 2021-02-17
US20110180231A1 (en) 2011-07-28
CN101137453B (zh) 2012-09-05
KR101152678B1 (ko) 2012-06-15
CA2597100C (fr) 2013-01-22
CN101137453A (zh) 2008-03-05
CA2597100A1 (fr) 2006-09-14
JP4559520B2 (ja) 2010-10-06
WO2006094803A1 (fr) 2006-09-14
KR20070110271A (ko) 2007-11-16
US20080173422A1 (en) 2008-07-24

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