发明公开
EP2562272A3 Method for producing steel product having excellent mechanical properties, steel product produced with the method and its use
审中-公开
生产具有优异机械性能的钢产品的方法，用该方法生产的钢产品及其用途
- 专利标题： Method for producing steel product having excellent mechanical properties, steel product produced with the method and its use
- 专利标题（中）： 生产具有优异机械性能的钢产品的方法，用该方法生产的钢产品及其用途
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申请号： EP12181887.6申请日： 2012-08-27
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公开(公告)号： EP2562272A3公开(公告)日： 2017-07-26
- 发明人: Saarinen, Tuomo , Peura, Pasi , Steen, Petteri , Rajala, Juha , Minkkinen, Jussi
- 申请人： Rautaruukki Oyj
- 申请人地址： Panuntie 11 00620 Helsinki FI
- 专利权人： Rautaruukki Oyj
- 当前专利权人： Rautaruukki Oyj
- 当前专利权人地址： Panuntie 11 00620 Helsinki FI
- 代理机构： Valea AB
- 优先权： FI20115832 20110826
- 主分类号： C21D8/10
- IPC分类号： C21D8/10 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; C22C38/18 ; C21D9/08 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50
摘要：
The invention relates to a method for producing a steel product having excellent mechanical properties and to a steel product produced by the method and used, in particular, for manufacturing components for automotive industry, inter alia. In addition, the invention relates to the use of a strain hardened steel pipe and to the manufacturing of said component. The invention is based on the idea that in the micro structure of a steel pipe to be heated very rapidly there is provided a strain hardened structure that is not soft annealed prior to the very rapid heating. Further, it is essential for the invention that the very rapid heating is followed by immediate cooling such that the micro structure formed in the steel product comprises at least 30% by volume martensite and/or bainite. The invention has significant advantages as to both a production chain and mechanical properties of the product.
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