WO2003006193A1 - Giesswalze für das vergiessen von metallschmelze und verfahren zur herstellung einer solchen giesswalze - Google Patents
Giesswalze für das vergiessen von metallschmelze und verfahren zur herstellung einer solchen giesswalze Download PDFInfo
- Publication number
- WO2003006193A1 WO2003006193A1 PCT/EP2002/006533 EP0206533W WO03006193A1 WO 2003006193 A1 WO2003006193 A1 WO 2003006193A1 EP 0206533 W EP0206533 W EP 0206533W WO 03006193 A1 WO03006193 A1 WO 03006193A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- casting
- hardness
- roll
- roller
- 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
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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/0651—Casting wheels
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/615—Microstructure of the layers, e.g. mixed structure
- C25D5/617—Crystalline layers
Definitions
- Casting roller for casting molten metal and process for producing such a casting roller
- the invention relates to a casting roll for the casting of molten metal, in particular molten steel, with a roll body consisting of a metallic material, to which a layer is applied, which is formed from a metal material that has a higher hardness than the material of the roll body.
- Casting rollers of this type are used in machines for the continuous casting of molten steel into cast strip.
- casting rolls used for casting steel are usually provided on their circumferential surface with a coating which has a higher hardness than the rest of the material of the casting roll.
- a method for producing the coating on the roll body of a casting roll consisting of copper is known from EP 0 801 154 B1. According to the known method, taking into account certain process steps, the circumferential surface of the casting roll, which is made of a copper material, is coated with a nickel layer, so that the finished casting roll is coated with a wear-resistant, hard layer on its circumferential surface that comes into contact with the melt. This nickel layer protects the copper rollers from mechanical damage and reduces their thermal load.
- EP 0 421 908 B1 it has been proposed in EP 0 421 908 B1 to apply two different layers to a roller body made of copper, the layer lying directly on the roller body expanding more when heated than the outer one which comes into direct contact with the melt Layer.
- the outer layer should be tensioned on the inner layer, although the inner layer is colder than the outer one due to the cooling of the roller body.
- the outer layer is preferably made of steel, nickel or chrome, while the inner layer is made of copper.
- a disadvantage of this type of double coating is that an additional boundary layer is created between the first and the second layer, which can lead to adhesion problems under unfavorable process conditions or due to non-uniform material properties.
- the object of the invention is to create, based on the prior art explained above, a casting roll which has an increased service life and improved performance properties.
- a method for producing such a casting roll is to be specified.
- This object is achieved in a device of the type described at the outset in that the thickness of the layer applied to the roller body is lower in its area adjacent to the roller body than in the area of its free surface.
- a single layer preferably based on a nickel alloy, is applied to the roller body.
- this layer is designed in such a way that it has a lower hardness in the area adjacent to the roll body than in the area of its outer surface which comes into direct contact with the melt.
- the layer has an increased ductility in the area bordering the roller body, so that it can absorb the deformations of the copper jacket of the roller body and good adhesion of the layer in this area the roller body is guaranteed.
- the risk of the coating becoming detached from the roll body during operation is prevented in this way, so that permanent reliable operation of the casting rolls is ensured.
- the hardness on the circumference of the casting roll is so high that the surface of an inventive Casting roller has good wear resistance and thus has an increased service life.
- the different course of hardness in the layer applied to the roller body can be produced in that the layer has a different composition in its area adjacent to the roller body than in the area of its free surface.
- the proportions of the elements in the electrolyte used can be increased, which lead to an increase in the hardness of the material deposited in each case.
- a different composition of the alloy is obtained over the thickness of the layer.
- Their distribution is designed so that it is less hard and more ductile in the area adjacent to the roll body than at the circumference of the casting roll.
- sodium citrate or sulfur for example, are suitable as hardness-increasing elements, which can preferably be used if the coating is produced on the basis of a nickel alloy.
- the coating process can also be carried out in such a way that the layer has a softer structure in its area adjacent to the roller body than in the area of its free outer surface.
- This can be achieved by increasing the deposition current from a minimum value in the course of the coating process. Due to a low deposition current at the beginning of the coating, a fine-grained layer thickness range is initially formed, which increases Possesses ductility. By subsequently increasing the deposition current, the structure becomes coarser and the hardness of the layer increases with increasing thickness.
- the coating process should be carried out in such a way that a homogeneous layer structure is obtained which has the optimum material properties in the respective problem areas (boundary layer between the roller body and the layer; outer surface of the layer). This can be ensured by adding hardness-increasing elements to the electrolyte or changing the deposition current in such a way that the hardness increases continuously over the thickness of the layer. Depending on the coating material used, its thickness and the respective operational influences, it may be expedient if the hardness has a linear or progressive increase starting from the circumference of the roller body.
- Fig. 2 shows the casting roll in cross section in an enlarged section.
- the casting roll 1 has a roll body 2, in which at least the outer peripheral surface 3 is formed from a copper material. Inside the roller body 2 is equipped with cooling devices, not shown, via which it is cooled in the casting operation.
- the strength of the deposition current has been continuously increased during the coating process.
- the layer 4 was formed slowly at the beginning of the coating process, so that the layer 4 has a fine microstructure in its area that comes into contact with the peripheral surface 3 of the roller body 2 and a low hardness in the range from 150 to 250 HV with increased ductility.
- the layer in the thickness range in question can follow the expansion of the roller body 2, which occurs as a result of the heating during the casting.
- the deposition current has been continuously increased linearly with the consequence that the layer formation took place ever faster and with increasingly coarser grain.
- the hardness of the layer increases linearly in the direction of the outer surface 5 coming into contact with the melt, so that the layer on the outer surface 5 has a maximum hardness in the range from 400 to 500 HV which causes high wear resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Continuous Casting (AREA)
- Electroplating Methods And Accessories (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02754675A EP1406739A1 (de) | 2001-07-13 | 2002-06-14 | Giesswalze für das vergiessen von metallschmelze und verfahren zur herstellung einer solchen giesswalze |
| CA002450564A CA2450564A1 (en) | 2001-07-13 | 2002-06-14 | Continuous casting roll for casting molten baths and method for producing one such continuous casting roll |
| SK1644-2003A SK16442003A3 (sk) | 2001-07-13 | 2002-06-14 | Valec na kontinuálne liatie na odlievanie roztaveného kúpeľa a spôsob jeho výroby |
| BR0211142-0A BR0211142A (pt) | 2001-07-13 | 2002-06-14 | Cilindro laminador para a laminação de fundidos metálicos e processo para preparação de um tal cilindro laminador |
| US10/483,577 US20040250981A1 (en) | 2001-07-13 | 2002-06-14 | Continuous casting roll for casting molten baths and method for producing one such continuous casting roll |
| JP2003511989A JP2004533934A (ja) | 2001-07-13 | 2002-06-14 | 溶融バス鋳造用の連続キャスティングローラー及び前記の連続的キャスティングローラーの製造方法 |
| KR10-2004-7000498A KR20040024583A (ko) | 2001-07-13 | 2002-06-14 | 용융 금속 주조용 주조 롤러 및 그러한 주조 롤러 제조 방법 |
| MXPA04000175A MXPA04000175A (es) | 2001-07-13 | 2002-06-14 | Rodillo de moldeo para moldear metal fundido y metodo para fabricar el rodillo de moldeo. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10134074A DE10134074C1 (de) | 2001-07-13 | 2001-07-13 | Gießwalze für das Vergießen von Metallschmelze und Verfahren zur Herstellung einer solchen Gießwalze |
| DE10134074.5 | 2001-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003006193A1 true WO2003006193A1 (de) | 2003-01-23 |
Family
ID=7691660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/006533 Ceased WO2003006193A1 (de) | 2001-07-13 | 2002-06-14 | Giesswalze für das vergiessen von metallschmelze und verfahren zur herstellung einer solchen giesswalze |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20040250981A1 (de) |
| EP (1) | EP1406739A1 (de) |
| JP (1) | JP2004533934A (de) |
| KR (1) | KR20040024583A (de) |
| CN (1) | CN1529642A (de) |
| BR (1) | BR0211142A (de) |
| CA (1) | CA2450564A1 (de) |
| CZ (1) | CZ20033568A3 (de) |
| DE (1) | DE10134074C1 (de) |
| MX (1) | MXPA04000175A (de) |
| PL (1) | PL367033A1 (de) |
| RU (1) | RU2004104364A (de) |
| SK (1) | SK16442003A3 (de) |
| WO (1) | WO2003006193A1 (de) |
| ZA (1) | ZA200400207B (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10311153A1 (de) * | 2003-03-14 | 2004-09-23 | Km Europa Metal Ag | Verfahren zur Herstellung eines Hohlzylinders aus Kupfer oder einer Kupferlegierung sowie Gießrolle aus einem Hohlzylinder |
| KR100711799B1 (ko) * | 2005-12-20 | 2007-04-30 | 주식회사 포스코 | 쌍롤식 박판주조기의 주조롤 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886053A (en) * | 1973-11-01 | 1975-05-27 | James M Leland | Programmable pulse electroplating process |
| JPS60145247A (ja) * | 1983-12-29 | 1985-07-31 | Kawasaki Steel Corp | 連続鋳造用鋳型とその製造方法 |
| EP0421908A1 (de) * | 1989-10-02 | 1991-04-10 | USINOR SACILOR Société Anonyme | Zylinder für Stranggiessvorrichtung zur Herstellung dünnen Metallbandes |
| EP0801154A1 (de) * | 1996-04-12 | 1997-10-15 | Usinor Sacilor | Verfahren zur Bearbeitung der aus Kupfer oder Kupferlegierung hergestellten Aussenoberfläche einer Strangguskokille welches aus einer Nickelplattierungstufe und einer Nickelentfernungstufe besteht |
| WO2000029647A2 (de) * | 1998-11-13 | 2000-05-25 | Federal-Mogul Wiesbaden Gmbh & Co. Kg. | Schichtverbundwerkstoff für gleitelemente und verfahren zu seiner herstellung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1466733A (en) * | 1921-02-21 | 1923-09-04 | Eastman Kodak Co | Apparatus for making sheets or films |
| US3827667A (en) * | 1956-05-28 | 1974-08-06 | J Lemelson | Composite mold wall structure |
| US3889053A (en) * | 1973-10-30 | 1975-06-10 | Westinghouse Electric Corp | Contactless test system |
| US5191925A (en) * | 1989-10-02 | 1993-03-09 | Usinor Sacilor | Roll for a device for the direct continuous casting of thin strips of molten metal |
-
2001
- 2001-07-13 DE DE10134074A patent/DE10134074C1/de not_active Expired - Fee Related
-
2002
- 2002-06-14 EP EP02754675A patent/EP1406739A1/de not_active Withdrawn
- 2002-06-14 CZ CZ20033568A patent/CZ20033568A3/cs unknown
- 2002-06-14 RU RU2004104364/02A patent/RU2004104364A/ru not_active Application Discontinuation
- 2002-06-14 CN CNA028140648A patent/CN1529642A/zh active Pending
- 2002-06-14 SK SK1644-2003A patent/SK16442003A3/sk unknown
- 2002-06-14 BR BR0211142-0A patent/BR0211142A/pt not_active Application Discontinuation
- 2002-06-14 JP JP2003511989A patent/JP2004533934A/ja active Pending
- 2002-06-14 WO PCT/EP2002/006533 patent/WO2003006193A1/de not_active Ceased
- 2002-06-14 US US10/483,577 patent/US20040250981A1/en not_active Abandoned
- 2002-06-14 PL PL02367033A patent/PL367033A1/xx unknown
- 2002-06-14 CA CA002450564A patent/CA2450564A1/en not_active Abandoned
- 2002-06-14 KR KR10-2004-7000498A patent/KR20040024583A/ko not_active Withdrawn
- 2002-06-14 MX MXPA04000175A patent/MXPA04000175A/es not_active Application Discontinuation
-
2004
- 2004-01-12 ZA ZA200400207A patent/ZA200400207B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886053A (en) * | 1973-11-01 | 1975-05-27 | James M Leland | Programmable pulse electroplating process |
| JPS60145247A (ja) * | 1983-12-29 | 1985-07-31 | Kawasaki Steel Corp | 連続鋳造用鋳型とその製造方法 |
| EP0421908A1 (de) * | 1989-10-02 | 1991-04-10 | USINOR SACILOR Société Anonyme | Zylinder für Stranggiessvorrichtung zur Herstellung dünnen Metallbandes |
| EP0801154A1 (de) * | 1996-04-12 | 1997-10-15 | Usinor Sacilor | Verfahren zur Bearbeitung der aus Kupfer oder Kupferlegierung hergestellten Aussenoberfläche einer Strangguskokille welches aus einer Nickelplattierungstufe und einer Nickelentfernungstufe besteht |
| WO2000029647A2 (de) * | 1998-11-13 | 2000-05-25 | Federal-Mogul Wiesbaden Gmbh & Co. Kg. | Schichtverbundwerkstoff für gleitelemente und verfahren zu seiner herstellung |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 009, no. 311 (M - 436) 7 December 1985 (1985-12-07) * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004533934A (ja) | 2004-11-11 |
| BR0211142A (pt) | 2004-06-29 |
| DE10134074C1 (de) | 2003-01-23 |
| KR20040024583A (ko) | 2004-03-20 |
| CN1529642A (zh) | 2004-09-15 |
| MXPA04000175A (es) | 2004-03-18 |
| RU2004104364A (ru) | 2005-06-10 |
| EP1406739A1 (de) | 2004-04-14 |
| CZ20033568A3 (cs) | 2004-12-15 |
| PL367033A1 (en) | 2005-02-21 |
| US20040250981A1 (en) | 2004-12-16 |
| ZA200400207B (en) | 2004-10-12 |
| CA2450564A1 (en) | 2003-01-23 |
| SK16442003A3 (sk) | 2004-07-07 |
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