EP0924010B1 - Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper - Google Patents

Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper Download PDF

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Publication number
EP0924010B1
EP0924010B1 EP98123408A EP98123408A EP0924010B1 EP 0924010 B1 EP0924010 B1 EP 0924010B1 EP 98123408 A EP98123408 A EP 98123408A EP 98123408 A EP98123408 A EP 98123408A EP 0924010 B1 EP0924010 B1 EP 0924010B1
Authority
EP
European Patent Office
Prior art keywords
hardness
layer
coating
wear
chromium
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
EP98123408A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0924010A1 (de
Inventor
Hans-Jürgen Hemschemeier
Dirk Dr. Rode
Ralf Rethmann
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
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 KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP0924010A1 publication Critical patent/EP0924010A1/de
Application granted granted Critical
Publication of EP0924010B1 publication Critical patent/EP0924010B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/059—Mould materials or platings
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/004—Copper alloys
    • 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
    • B22D11/0408—Moulds for casting thin slabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component

Definitions

  • the invention relates to a method for producing a mold body according to the features in the preamble of claim 1 and on the other hand a mold body according to the features in the preamble of claim 5.
  • the mold is one of the most important components of a continuous caster. It begins in her the solidification of the melt.
  • the basic structure usually consists of one outer steel structure and the actual shaping part of the mold, the mold body.
  • the mold body is now almost exclusively made of copper or a copper alloy.
  • the steel jacket has the task of closing the mold body position and ensure the water cycle required for cooling.
  • the wear resistance of copper alloys is relatively low.
  • the mold body is therefore covered with an inner one Coating made of a wear-resistant material, such as nickel or chrome, Mistake.
  • a wear-resistant material such as nickel or chrome
  • Such a mold body with a wear protection layer goes for example from DE 31 42 196 C2. This can improve the Friction behavior and thus an increase in the service life of the mold body become.
  • a chrome coating is characterized by its opposite Nickel greater hardness and the associated better wear protection out.
  • a galvanic coating of the inner surface with hard chrome therefore offers effective wear protection.
  • the invention is therefore based on the object to show a method for producing mold bodies from a curable Copper alloy and an inner wear protection layer made of chrome with an improved adhesion between the mold body and the wear protection layer.
  • the invention further aims at a qualitatively improved mold body which longer service life.
  • the mold body consisting of a hardenable copper alloy after the solution annealing with an inner coating of chrome and then cured.
  • This heat treatment makes the wear protection layer hard at first decreased with the consequence of an increase in ductility.
  • the differences in the material properties of the copper alloy of the mold body and the wear protection layer Chromium are then less, reducing the risk of Damage to the chrome layer due to the different properties is reduced.
  • the mold body can basically be a one-piece mold tube or a multi-part mold, for example a plate mold.
  • the curing under protective gas in one reducing atmosphere is on its Brought ultimate strength.
  • the curing temperature is based on the desired hardness of the wear protection layer matched to avoid excessive softening of the chrome layer.
  • the curing is carried out at a temperature between 400 ° C and 550 ° C (Claim 3). Very good results were obtained in practical tests with achieved a temperature of 460 ° C under protective gas, the duration of the heat treatment was 10 hours.
  • a hardness of the wear protection layer from 650 HV to 700 HV (Vickers hardness).
  • the wear protection layer then has a sufficiently high hardness, but due to the higher Ductility a more favorable adhesive strength and a lower tendency to crack.
  • the wear protection layer becomes two-layer formed by additionally hardening the inner surface is hard chrome plated.
  • the chrome layer is preferably deposited electrolytically.
  • a mold body according to the invention can be seen in the features of the claim 5 characterized.
  • the key point is the measure that the hardness of the wear protection layer from the surface on the strand side towards the mold body decreases.
  • the hardness can be gradually increased based on the copper alloy.
  • the pipe-side chrome layer has one Hardness between 500 HV and 850 HV, whereas the chrome layer on the strand side has a hardness between 850 HV and 1050 HV.
  • the layer thicknesses of the tube-side and strand-side chrome layer are preferably each between 100 ⁇ m and 150 ⁇ m, with a total layer thickness of approx. 250 ⁇ m is considered to be particularly favorable in practice.
  • the wear protection layer can have a constant thickness in the casting direction. Basically, it is also possible that the thickness of the wear protection layer increases in the casting direction. This results in a high wall temperature in the area of the mold level guaranteed while increasing wear protection in Casting. In this way, effective coordination of the solidification available cooling section of the mold with regard to the shrinkage behavior of the strand.
  • the change in coating thickness can be linear or stepwise.
  • the invention is based on an embodiment shown in Figure 1 described.
  • FIG. 1 illustrates a mold tube 1 for the continuous casting of steel.
  • the Mold tube 1 has a mold cavity 2, the cross section of which is on the pouring side Front end 3 is larger than dimensioned at the end 4 of the strand exit end.
  • the base body 5 of the mold tube 1 is preferably made of a copper alloy based on copper / chrome / zircon (CuCrZr).
  • the mold tube 1 is made with a wear protection layer 7 Chrome.
  • the wear protection layer 7 is formed in two layers, the Hardness of the wear protection layer 7 from the surface 8 on the strand side in the direction to the mold tube 1 or the inside 6 of the mold tube 1 decreases.
  • the wear protection layer 7 is made up of two individual wear protection layers, the chrome layers 9 and 10 built up with different hardness.
  • the Pipe-side chrome layer 9 preferably has a hardness of 650 HV.
  • the chromium layer 10 on the strand side has a hardness of 1000 to 1050 HV harder.
  • the mold tube 1 or its Base body 5 chrome-plated in the solution-annealed state and then in one Heat treatment has been cured.
  • the mold body 1 thus obtains its ultimate strength.
  • the chrome layer 9 then has a hardness of 650 HV on.
  • the second chrome layer 10 is applied, which has a hardness of 1050 HV.
  • the wear protection layer 7 is a total of 250 microns thick, the layer thickness of the Chrome layer 9 is 100 ⁇ m and the layer thickness of the chrome layer 10 is 150 ⁇ m.
  • the advantage of the two-layer wear protection layer 7 is that it is reduced Difference between hardness and ductility at the transition from the base body 5 to Chrome layer 9 ensuring high hardness on the strand side Surface 8 through the chrome layer 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Contacts (AREA)
EP98123408A 1997-12-17 1998-12-09 Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper Expired - Lifetime EP0924010B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19756164 1997-12-17
DE19756164A DE19756164A1 (de) 1997-12-17 1997-12-17 Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper

Publications (2)

Publication Number Publication Date
EP0924010A1 EP0924010A1 (de) 1999-06-23
EP0924010B1 true EP0924010B1 (de) 2002-09-04

Family

ID=7852298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123408A Expired - Lifetime EP0924010B1 (de) 1997-12-17 1998-12-09 Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper

Country Status (19)

Country Link
US (2) US6206987B1 (cs)
EP (1) EP0924010B1 (cs)
JP (1) JPH11244997A (cs)
KR (1) KR19990062793A (cs)
CN (1) CN1095708C (cs)
AR (1) AR009930A1 (cs)
AT (1) ATE223267T1 (cs)
AU (1) AU744465B2 (cs)
BR (1) BR9805419A (cs)
CA (1) CA2256207C (cs)
CZ (1) CZ415698A3 (cs)
DE (2) DE19756164A1 (cs)
DK (1) DK0924010T3 (cs)
ES (1) ES2180114T3 (cs)
PL (1) PL330305A1 (cs)
PT (1) PT924010E (cs)
RU (1) RU2211111C2 (cs)
TW (1) TW396072B (cs)
ZA (1) ZA9811283B (cs)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1480673A1 (en) * 2002-02-25 2004-12-01 Lyfjathroun HF, Biopharmaceutical Research A bioadhesive agent
DE10227034A1 (de) * 2002-06-17 2003-12-24 Km Europa Metal Ag Kupfer-Gießform
AT500814B1 (de) * 2004-10-13 2006-11-15 Voest Alpine Ind Anlagen Verfahren zur erhöhung der lebensdauer der breitseitenwände einer verstellkokille
JP4751260B2 (ja) * 2006-07-13 2011-08-17 新日本製鐵株式会社 連続鋳造用鋳型およびその製造方法
US20080093047A1 (en) * 2006-10-18 2008-04-24 Inframat Corporation Casting molds coated for surface enhancement and methods of making
DE102007002806A1 (de) 2007-01-18 2008-07-24 Sms Demag Ag Kokille mit Beschichtung
DE102010012309A1 (de) 2010-03-23 2011-09-29 Sms Siemag Ag Kokillenelement und Verfahren zu dessen Beschichtung
CN119733808B (zh) * 2024-12-27 2025-06-17 沈阳和泰冶金设备有限公司 层状复合板式连铸机结晶器铜板及其制备方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100851A (en) * 1979-01-26 1980-08-01 Kawasaki Steel Corp Mold for continuous casting of bloom, billet and beam blank
JPS577360A (en) * 1980-06-14 1982-01-14 Mishima Kosan Co Ltd Mold for continuous casting
JPS6039453B2 (ja) * 1980-06-14 1985-09-06 三島光産株式会社 連続鋳造用鋳型の製造方法
JPS5717347A (en) * 1980-07-04 1982-01-29 Nippon Kokan Kk <Nkk> Manufacture of continuous casting mold
GB2100154B (en) * 1981-04-27 1985-11-06 Sumitomo Metal Ind Molds for continuously casting steel
DE3142196C2 (de) * 1981-10-24 1984-03-01 Mishima Kosan Corp., Kitakyushu, Fukuoka Stranggießkokille mit Verschleißschutzschicht
JPS62270249A (ja) * 1986-05-17 1987-11-24 Fujiki Kosan Kk 連続鋳造用鋳型の製造方法
JPH0626754B2 (ja) * 1987-01-16 1994-04-13 株式会社神戸製鋼所 連続鋳造用鋳型
JPH0677789B2 (ja) * 1987-07-03 1994-10-05 株式会社神戸製鋼所 連続鋳造用鋳型
EP0305930B1 (en) * 1987-08-29 1992-08-05 Nippon Steel Corporation Method of oscillating continuous casting mold at high frequencies and mold oscillated by such method
RU2020034C1 (ru) * 1989-06-02 1994-09-30 Сугитани Кинзоку Когио Кабусики Кайся Порошковый материал для напыления покрытий и литейная форма многократного использования
US5252147A (en) * 1989-06-15 1993-10-12 Iowa State University Research Foundation, Inc. Modification of surface properties of copper-refractory metal alloys
RU2006338C1 (ru) * 1992-09-28 1994-01-30 Новолипецкий металлургический комбинат им.Ю.В.Андропова Кристаллизатор машины непрерывного литья заготовок
RU2055682C1 (ru) * 1994-03-11 1996-03-10 Александр Павлович Семенов Кристаллизатор

Also Published As

Publication number Publication date
JPH11244997A (ja) 1999-09-14
EP0924010A1 (de) 1999-06-23
PT924010E (pt) 2003-01-31
DE59805400D1 (de) 2002-10-10
RU2211111C2 (ru) 2003-08-27
CA2256207C (en) 2005-03-29
CZ415698A3 (cs) 1999-10-13
CN1220924A (zh) 1999-06-30
US6383663B2 (en) 2002-05-07
CA2256207A1 (en) 1999-06-17
TW396072B (en) 2000-07-01
ZA9811283B (en) 1999-06-14
ATE223267T1 (de) 2002-09-15
DK0924010T3 (da) 2003-01-06
DE19756164A1 (de) 1999-06-24
US6206987B1 (en) 2001-03-27
AU744465B2 (en) 2002-02-21
US20010006738A1 (en) 2001-07-05
BR9805419A (pt) 1999-11-09
ES2180114T3 (es) 2003-02-01
PL330305A1 (en) 1999-06-21
KR19990062793A (ko) 1999-07-26
CN1095708C (zh) 2002-12-11
AU9712898A (en) 1999-07-08
AR009930A1 (es) 2000-05-03

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