发明申请
- 专利标题: HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT STRETCH FLANGEABILITY AND PRECISION PUNCHABILITY AND MANUFACTURING METHOD THEREOF
- 专利标题(中): 高强度冷轧钢板,具有优异的压边力和精度可调节性及其制造方法
-
申请号: US14235009申请日: 2012-07-27
-
公开(公告)号: US20140193667A1公开(公告)日: 2014-07-10
- 发明人: Hiroshi Shuto , Nobuhiro Fujita , Tatsuo Yokoi , Riki Okamoto , Kazuaki Nakano , Shinichiro Watanabe
- 申请人: Hiroshi Shuto , Nobuhiro Fujita , Tatsuo Yokoi , Riki Okamoto , Kazuaki Nakano , Shinichiro Watanabe
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人: NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2011-164383 20110727
- 国际申请: PCT/JP2012/069259 WO 20120727
- 主分类号: C22C38/38
- IPC分类号: C22C38/38 ; C22C38/32 ; C22C38/28 ; C22C38/22 ; C22C38/16 ; C22C38/00 ; C22C38/12 ; C22C38/10 ; C22C38/08 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C21D8/02 ; C22C38/14
摘要:
A high-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability containing predetermined components and a balance being composed of iron and inevitable impurities, in which in a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group represented by respective crystal orientations of {100} , {116} , {114} , {113} , {112} , {335} , and {223} is 6.5 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a metal structure contains, in terms of an area ratio, greater than 5% of pearlite, the sum of bainite and martensite limited to less than 5%, and a balance composed of ferrite.
公开/授权文献
信息查询