发明申请
- 专利标题: HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE
- 专利标题(中): 热压钢板,压制件和制造压制件的方法
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申请号: US14917823申请日: 2013-09-10
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公开(公告)号: US20160222482A1公开(公告)日: 2016-08-04
- 发明人: Toshio MURAKAMI , Junya NAITOU , Keisuke OKITA , Shushi IKEDA
- 申请人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 申请人地址: JP Kobe-shi
- 专利权人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 当前专利权人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 当前专利权人地址: JP Kobe-shi
- 国际申请: PCT/JP2013/074426 WO 20130910
- 主分类号: C21D9/00
- IPC分类号: C21D9/00 ; C22C38/50 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C22C38/32 ; C22C38/28 ; C22C38/26 ; C22C38/24 ; C22C38/22 ; C22C38/20 ; C22C38/14 ; C21D8/00 ; C21D1/20 ; C22C38/54
摘要:
Provided is a hot-pressing steel plate useful for obtaining a press-molded article having excellent anti-softening characteristics in heat-affected zones (HAZ) while attaining a press-molded article that can achieve a high level of balance between high strength and stretchability if uniform characteristics within the molded article are required, and a high level of balance between high strength and stretchability in respective regions if regions corresponding to shock-resistant portions and energy-absorbing portions are required within one molded article; molding and processing prior to hot-pressing being facilitated by the hot-pressing steel plate having a prescribed chemical composition, having the equivalent circular diameter of Ti-containing deposits included in the steel plate be 30 nm or less with the average equivalent circular diameter of the Ti-containing deposits being 6 nm or less, having the deposited Ti amount and the total Ti amount within the steel satisfy a prescribed relation, and having a metal structure with a proportion of ferrite of 30% by area or greater.
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