发明授权
- 专利标题: Thick high-tensile-strength hot-rolled steel sheet having excellent low-temperature toughness and manufacturing method thereof
- 专利标题(中): 具有优异的低温韧性的厚的高强度热轧钢板及其制造方法
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申请号: US13146747申请日: 2010-01-29
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公开(公告)号: US08784577B2公开(公告)日: 2014-07-22
- 发明人: Chikara Kami , Hiroshi Nakata , Kinya Nakagawa
- 申请人: Chikara Kami , Hiroshi Nakata , Kinya Nakagawa
- 申请人地址: JP Tokyo
- 专利权人: JFE Steel Corporation
- 当前专利权人: JFE Steel Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: RatnerPrestia
- 优先权: JP2009-019353 20090130; JP2009-019356 20090130; JP2009-019357 20090130
- 国际申请: PCT/JP2010/051646 WO 20100129
- 国际公布: WO2010/087511 WO 20100805
- 主分类号: C22C38/02
- IPC分类号: C22C38/02 ; C22C38/04 ; C22C38/12 ; C22C38/14 ; C21D8/02
摘要:
A high-tensile-strength hot-rolled steel sheet is provided having a composition which contains 0.02 to 0.08% C, 0.01 to 0.10% Nb, 0.001 to 0.05% Ti and Fe and unavoidable impurities as a balance, wherein the steel sheet contains C, Ti and Nb in such a manner that (Ti+(Nb/2))/C
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