发明授权
- 专利标题: VERFAHREN ZUM HERSTELLEN EINES KALTBANDS MIT FERRITISCHEM GEFÜGE
- 专利标题(英): Method for producing a cold-rolled strip with a ferritic structure
- 专利标题(中): 方法用于生产具有铁素体结构的冷段
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申请号: EP06847041.8申请日: 2006-12-27
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公开(公告)号: EP1966399B1公开(公告)日: 2012-07-11
- 发明人: SELLGER, Roland , STEBNER, Guido , SACHTLEBER, Michael , ERNENPUTSCH, Lutz , DEGENHARDT, Rolf
- 申请人: ThyssenKrupp Nirosta GmbH
- 申请人地址: Oberschlesienstrasse 16 47807 Krefeld DE
- 专利权人: ThyssenKrupp Nirosta GmbH
- 当前专利权人: ThyssenKrupp Nirosta GmbH
- 当前专利权人地址: Oberschlesienstrasse 16 47807 Krefeld DE
- 代理机构: Cohausz & Florack
- 优先权: DE102005063058 20051229
- 国际公布: WO2007074157 20070705
- 主分类号: C21D8/02
- IPC分类号: C21D8/02 ; C21D6/00 ; B22D11/124 ; B22D11/06
摘要:
The invention relates to a method for producing a cold-rolled strip with a ferritic structure. According to said method, molten steel that forms a ferritic structure on cooling is cast into a strip, if necessary the cast strip is hot-rolled in-line, the hot-rolled strip is wound and then in one or more steps is cold-rolled to form the cold-rolled strip. A method of this type permits the production of cold-rolled strips, in which the risk of a formation of an orange peel appearance or ridging is minimised during a cold forming process. To achieve this, the cast strip is cooled between the casting process and the winding process from a starting temperature above 1180 °C, at a cooling rate of at least 150 °C/s, to an intermediate maximum temperature of 1000 °C and is then held for at least 10 s at a maintenance temperature of between 900 and 1000 °C.
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