发明申请
- 专利标题: Hot forming method and a hot formed member
- 专利标题(中): 热成型法和热成型法
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申请号: US11287356申请日: 2005-11-28
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公开(公告)号: US20060185774A1公开(公告)日: 2006-08-24
- 发明人: Toshinobu Nishibata , Masahiro Nakata , Shuntaro Suda , Akira Obayashi , Masanobu Ichikawa
- 申请人: Toshinobu Nishibata , Masahiro Nakata , Shuntaro Suda , Akira Obayashi , Masanobu Ichikawa
- 优先权: JP2003-151106 20030528
- 主分类号: C22C38/32
- IPC分类号: C22C38/32
摘要:
A hot press-formed member having stable strength and toughness is manufactured from a high strength steel sheet by hot press forming. In the cooling stage during hot press forming, the cooling rate is at least the critical cooling rate until the Ms point is reached and it is then in the range of 25-150° C./s in the temperature range from the Ms point to 200° C. The Vickers hardness of the hot pressed member is less than the value of (maximum quenching hardness −10) and at east the value of (maximum quenching hardness −100).
公开/授权文献
- US07559998B2 Hot forming method and a hot formed member 公开/授权日:2009-07-14