EP0911095B2 - Lingotière pour machine de coulée continue - Google Patents

Lingotière pour machine de coulée continue Download PDF

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Publication number
EP0911095B2
EP0911095B2 EP98119000A EP98119000A EP0911095B2 EP 0911095 B2 EP0911095 B2 EP 0911095B2 EP 98119000 A EP98119000 A EP 98119000A EP 98119000 A EP98119000 A EP 98119000A EP 0911095 B2 EP0911095 B2 EP 0911095B2
Authority
EP
European Patent Office
Prior art keywords
mold
plating
mould
coating
nickel
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.)
Expired - Lifetime
Application number
EP98119000A
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German (de)
English (en)
Other versions
EP0911095B1 (fr
EP0911095A1 (fr
Inventor
Dirk Dr. Rode
Hector Villanueva
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.)
KM Europa Metal AG
Original Assignee
KM Europa Metal AG
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Filing date
Publication date
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Application filed by KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP0911095A1 publication Critical patent/EP0911095A1/fr
Publication of EP0911095B1 publication Critical patent/EP0911095B1/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
    • B22D11/055—Cooling the 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
    • B22D11/059—Mould materials or platings

Definitions

  • the invention relates to a mold for a continuous casting with a shaping mold body made of a material of high thermal conductivity, such as copper or a copper alloy.
  • Molds are used to make solid profiles in a continuous casting process.
  • the mold is one of the most important components of a continuous casting plant. In it, the solidification of the melt begins.
  • the basic structure usually consists of an outer steel construction and the actual forming part of the mold, the Kokillenanalysis.
  • the Kokillenanalysis consists today almost exclusively of copper or a copper alloy.
  • the steel jacket has the task of positioning the mold body and ensuring the necessary water circulation for cooling.
  • the DD-A-3536 discloses a continuous casting mold with a layer of a material having a lower thermal conductivity than the mold material.
  • the layer is provided on the outer wall of the mold and may be made of scale or be designed as an electrolytically generated oxide layer.
  • the DE-C-969000 describes a continuous casting mold having a mold wall which has one or more layers of a poorer heat-conducting material in its lower cooling region.
  • This lower layer can be made of iron.
  • US-A-4450893 includes a prior art continuous casting mold with a heat-insulating tape on the outside. This band should be provided specifically in a locally narrow area on the outer wall, in which typically sudden changes in heat flow occur.
  • the DE-A-3142196 discloses a continuous casting mold with an inner coating of the mold cavity.
  • the coating should be provided in the lower region of the mold, since here the hardened shell of the strand wears the inner wall mechanically.
  • the FR-A-2067289 describes a coating or a partial coating of the inner mold cavity.
  • inserts are used which line the inner mold cavity, at least in the area of the bathroom mirror.
  • the invention is therefore based on the prior art, the object to provide a mold body, in which the heat dissipation is reduced, especially in the Gelloapttik Switzerland and a better strand quality can be achieved.
  • a first solution to this problem consists of the invention in the features listed in the characterizing part of claim 1.
  • the main point of the invention is the measure to reduce the heat dissipation in the mold body by a coating on the outside, wherein the coating is applied to a beginning of the pouring end portion in the height range of the mold level.
  • the coating consists of a material with a lower thermal conductivity compared to the material of the mold body and of nickel or a nickel alloy. This results in a procedurally desired reduced heat flow in the molten metal. The resulting higher temperatures have a positive effect on the quality of the strand surface and the structure quality.
  • the shrinkage behavior of the material to be cast can be specifically taken into account.
  • the heat dissipation in the casting direction increases.
  • the effective tuning of the cooling distance available in the mold for the solidification can take place with regard to the shrinkage behavior of the strand.
  • the reduction of the thickness of the outer coating can be linear or stepped.
  • the thickness and length of the outer coating is matched to the respective casting and installation parameters.
  • the mold body can be a one-part mold tube or a multi-part mold, for example a plate mold.
  • a second independent solution of the problem can be seen in the features of claim 2.
  • the existing nickel or nickel alloy coating is provided on the outside of the mold body and decreases linearly from the front end to the foot end.
  • the shrinkage behavior of the material to be cast can be specifically taken into account.
  • the heat dissipation in the casting direction increases.
  • the effective tuning of the cooling distance available in the mold for the solidification can take place with regard to the shrinkage behavior of the strand.
  • the coating is applied only to a part of the circumference of the mold body. This measure is particularly suitable for non-rotationally symmetrical Kokillenkörpem. For adjustment molds, it may be advantageous, for example, to provide only the longitudinal plates with an outer coating.
  • the targeted coating can be a disproportionate shrinkage of the strand in individual areas, for example, in corner areas are avoided. This ensures that the heat transfer over the entire circumference of the strand is approximately uniform, so that over the entire cross-section of the strand, a strand shell growing uniformly in thickness is achieved.
  • a high quality and economical coating can be applied galvanically (claim 4). It is also possible to apply the coating as a thermal spray coating, as provided in claim 5.
  • Nickel materials have already proven themselves as material for the inner wear protection layer. Frequently, therefore, users also have options for nickel-casting mold bodies.
  • Nickel has more than four times lower thermal conductivity than copper. Accordingly, by an outer coating of nickel, an effective reduction of heat dissipation and thus an increase in the temperature in the G screenador Bachelor Scheme be effected.
  • Nickel can be applied both as a galvanic coating and as a metal spray coating.
  • the Kokillenanalysis can be coated on the outside completely or only locally in G faux Spiegel Kunststoff.
  • FIGS. 1 to 3 three different embodiments of a Kokillen emotionss are shown in the form of a mold tube in vertical longitudinal section.
  • the FIG. 1 illustrates a mold tube 1 for the continuous casting of steel.
  • the mold tube 1 has a mold cavity 2, whose cross-section is dimensioned at the pouring end 3 greater than at the strand outlet side foot 4.
  • the main body 5 of the mold tube 1 consists of a copper alloy, preferably based on copper / chromium / zirconium (CuCrZr).
  • the mold tube 1 On the outer side 6, the mold tube 1 has a coating 8 on a section A in the height range of the casting mirror 7.
  • the coating 8 consists of a material with a relation to the material of the mold tube 1 and the base body 5 lower thermal conductivity.
  • nickel is well suited as a material for the outer coating 8. Nickel can be applied both as a galvanic coating and as a thermal metal spray coating.
  • the coating 8 reduces the heat flow and thus the heat dissipation of the mold tube 1 in the height range of the casting mirror 7. This results in higher wall temperatures in the initial phase of strand shell training. This leads to an improvement in the surface quality of a steel strand. In particular, micro-cracks near the edge of the mold tube 1 can be avoided in this way.
  • the coating 8 has a casting direction G approximately constant thickness D 1 . In the transition region 9, the coating 8 tapers continuously to the outside 6.
  • the mold tube 1 is provided with a wear protection layer 11 of chromium, which is about 80 microns thick.
  • FIG. 2 Another embodiment of a mold tube 12 is in the FIG. 2 shown. This has at the pouring end 13 has an outer coating 14 to reduce heat dissipation.
  • the coating 14 extends over the height range of the casting mirror 15, whereby the thickness D 2 of the coating 14 in the casting direction G is reduced.
  • One possible embodiment of the coating 14 provides a thickness D 2 which decreases from 3 mm to 1 mm and has a transition area 16 which is continuous at the end.
  • a section of a further variant of a mold tube 17 shows FIG. 3 ,
  • the mold tube 17 has a coating 18 on the outer side 19, the thickness D 3 decreases linearly from the front end 20 to the foot 21.
  • the coating 18 the heat dissipation in the mold tube 17 is reduced.
  • the heat flow increases in total from the front end 20 of the mold tube 17 to the foot 21 towards.
  • the mold body of a mold according to the invention does not necessarily have to be a mold tube.
  • the invention is equally advantageous in multi-part configured molds, such as plate molds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Casting Devices For Molds (AREA)

Claims (6)

  1. Lingotière pour une machine de coulée continue, comportant un corps de lingotière (1, 12) de moulage, en un matériau de conductibilité thermique élevée, comme du cuivre ou un alliage de cuivre, dans laquelle le corps de lingotière (1, 12) est muni dans certaines zones d'un revêtement (8, 14) extérieur en un matériau ayant, par rapport au matériau du corps de lingotière (1, 12), une conductibilité thermique plus faible, dans laquelle
    un revêtement (8, 14) est appliqué sur une pièce partielle (A), commençant à l'extrémité frontale (3, 13) côté chargement, dans la zone située à hauteur de la surface du bain (7, 15) et le revêtement (8, 14) est en nickel ou en un alliage de nickel,
    caractérisée en ce que
    le revêtement (14) présente une épaisseur (D2) diminuant dans la direction de la coulée (G).
  2. Lingotière pour une machine de coulée continue, comportant un corps de lingotière (17) de moulage, en un matériau de conductibilité thermique élevée, comme du cuivre ou un alliage de cuivre, dans laquelle le corps de lingotière (17) est muni d'un revêtement (18) extérieur en un matériau ayant, par rapport au matériau du corps de lingotière (17), une conductibilité thermique plus faible,
    caractérisée en ce qu'
    il est prévu sur la face extérieure (19) un revêtement (18) qui diminue linéairement de l'extrémité frontale (20) vers l'extrémité pied (21) et le revêtement (18) est en nickel ou en un alliage de nickel.
  3. Lingotière selon la revendication 1 ou 2,
    caractérisée en ce que
    le revêtement (8, 14, 18) est appliqué sur une partie de la périphérie du corps de lingotière (1, 12, 17).
  4. Lingotière selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le revêtement (8, 14, 18) est appliqué par procédé galvanique.
  5. Lingotière selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le revêtement (8, 14, 18) est appliqué sous forme de couche pulvérisée thermiquement.
  6. Lingotière selon l'une des revendications 1 à 5,
    caractérisée en ce que
    le corps de lingotière (1) présente un revêtement intérieur (11).
EP98119000A 1997-10-25 1998-10-08 Lingotière pour machine de coulée continue Expired - Lifetime EP0911095B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19747305 1997-10-25
DE19747305A DE19747305A1 (de) 1997-10-25 1997-10-25 Kokille für eine Stranggießanlage

Publications (3)

Publication Number Publication Date
EP0911095A1 EP0911095A1 (fr) 1999-04-28
EP0911095B1 EP0911095B1 (fr) 2004-09-22
EP0911095B2 true EP0911095B2 (fr) 2010-07-21

Family

ID=7846694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119000A Expired - Lifetime EP0911095B2 (fr) 1997-10-25 1998-10-08 Lingotière pour machine de coulée continue

Country Status (7)

Country Link
US (1) US5899259A (fr)
EP (1) EP0911095B2 (fr)
JP (1) JP4303809B2 (fr)
CN (1) CN1075752C (fr)
AT (1) ATE276848T1 (fr)
CA (1) CA2247785C (fr)
DE (2) DE19747305A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802809A1 (de) * 1998-01-27 1999-07-29 Km Europa Metal Ag Flüssigkeitsgekühlte Kokille
DE19852473C5 (de) * 1998-11-13 2005-10-06 Sms Demag Ag Kokillenplatte einer Stranggießanlage
CN100379137C (zh) * 2005-07-21 2008-04-02 南京航空航天大学 零电压开关复合式交错并联双管正激三电平直流变换器
KR100792801B1 (ko) 2006-12-15 2008-01-14 남기홍 튜브몰드 재생공법
JP4659796B2 (ja) * 2007-08-31 2011-03-30 三島光産株式会社 連続鋳造用鋳型の補修方法及び補修された連続鋳造用鋳型
CN101992276A (zh) * 2010-12-13 2011-03-30 西南铝业（集团）有限责任公司 一种铝合金结晶器
CN102069163B (zh) * 2010-12-24 2013-11-13 中冶京诚工程技术有限公司 结晶器、生产铸坯的装置和方法、铸坯以及超大断面铸坯
CN102527958A (zh) * 2011-12-09 2012-07-04 太原科技大学 用于连续铸钢的结晶装置
CN102554155A (zh) * 2011-12-22 2012-07-11 莱芜钢铁集团有限公司 管式结晶器
CN102527959A (zh) * 2011-12-22 2012-07-04 莱芜钢铁集团有限公司 组合式结晶器
KR101443788B1 (ko) * 2012-08-09 2014-09-23 주식회사 포스코 주조용 주형
CN102974782B (zh) * 2012-12-14 2015-01-21 莱芜钢铁集团有限公司 H型管式结晶器
DE102017211108A1 (de) * 2017-06-30 2019-01-03 Thyssenkrupp Ag Kokillenplatte und Kokille für eine Stranggießanlage sowie Strangguss-Verfahren
CN108838352B (zh) * 2018-05-25 2023-08-22 中冶连铸技术工程有限责任公司 一种双水套结构的结晶器
CN110125350B (zh) * 2019-06-04 2024-08-13 中国重型机械研究院股份公司 用于板坯连铸机结晶器宽面的多层复合铜板及其制备方法
FR3117051B1 (fr) * 2020-12-03 2023-04-28 Safran Anneau mouleur d’obtention d’un produit en alliage de titane ou en intermétallique TiAl et procédé l’utilisant
CN118045974A (zh) * 2024-02-20 2024-05-17 常熟中佳新材料有限公司 一种复合结构水平连铸石墨结晶器装置
DE102024115221B3 (de) * 2024-05-31 2025-05-15 Cunova Gmbh Kokillenkörper und Verfahren zur Herstellung eines Kokillenkörpers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149734A2 (fr) † 1984-01-05 1985-07-31 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue d'un ruban d'acier
JPS63119954A (ja) † 1986-11-07 1988-05-24 Sumitomo Metal Ind Ltd 連続鋳造用超音波振動鋳型

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD3536A (fr) *
DE969000C (de) * 1951-03-09 1958-04-17 Boehler & Co Ag Geb Stranggiesskokille
BE758996A (fr) * 1969-11-14 1971-04-30 Kabel Metallwerke Ghh Lingotiere de coulee continue pour la coulee d'un metal, en particulierde l'acier
GB2100154B (en) * 1981-04-27 1985-11-06 Sumitomo Metal Ind Molds for continuously casting steel
US4450893A (en) * 1981-04-27 1984-05-29 International Telephone And Telegraph Corporation Method and apparatus for casting metals and alloys
DE3142196C2 (de) * 1981-10-24 1984-03-01 Mishima Kosan Corp., Kitakyushu, Fukuoka Stranggießkokille mit Verschleißschutzschicht
DE3377700D1 (en) * 1982-11-04 1988-09-22 Voest Alpine Ag Open-ended mould for a continuous-casting plant
US5407499A (en) * 1985-04-19 1995-04-18 Km Kabelmetal A.G. Making a mold for continuous casting
US5778824A (en) * 1996-01-31 1998-07-14 Musgrave; Gary Magnetic device and method for feeding aquatic animals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149734A2 (fr) † 1984-01-05 1985-07-31 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue d'un ruban d'acier
JPS63119954A (ja) † 1986-11-07 1988-05-24 Sumitomo Metal Ind Ltd 連続鋳造用超音波振動鋳型

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Duisburger Strangiesstage", 16 February 1984, article H.GRAVEMANN: "Werkstoffe für Stahl-Stranggusskokillen derzeitiger Stand und Entwicklungstendenzen" †

Also Published As

Publication number Publication date
EP0911095B1 (fr) 2004-09-22
ATE276848T1 (de) 2004-10-15
US5899259A (en) 1999-05-04
CA2247785C (fr) 2002-11-26
DE19747305A1 (de) 1999-04-29
JPH11197800A (ja) 1999-07-27
CN1215638A (zh) 1999-05-05
DE59811984D1 (de) 2004-10-28
JP4303809B2 (ja) 2009-07-29
EP0911095A1 (fr) 1999-04-28
CA2247785A1 (fr) 1999-04-25
CN1075752C (zh) 2001-12-05

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