- 专利标题: Abrasion resistant steel plate or steel sheet excellent in resistance to stress corrosion cracking and method for manufacturing the same
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申请号: US14008169申请日: 2012-03-28
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公开(公告)号: US09938599B2公开(公告)日: 2018-04-10
- 发明人: Keiji Ueda , Nobuyuki Ishikawa
- 申请人: Keiji Ueda , Nobuyuki Ishikawa
- 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: Oliff PLC
- 优先权: JP2011-071317 20110329
- 国际申请: PCT/JP2012/059127 WO 20120328
- 国际公布: WO2012/133911 WO 20121004
- 主分类号: C21D8/02
- IPC分类号: C21D8/02 ; C22C38/02 ; C22C38/50 ; C22C38/00 ; C22C38/04 ; C22C38/06 ; C22C38/12 ; C22C38/18 ; C22C38/20 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/28 ; C22C38/40 ; C21D8/04 ; C21D1/25
摘要:
An abrasion resistant steel plate or steel sheet suitable for use in construction machines, industrial machines, and the like and a method for manufacturing the same. In particular, a steel plate or steel sheet has a composition containing 0.20% to 0.30% C, 0.05% to 1.0% Si, 0.40% to 1.20% Mn, P, S, 0.1% or less Al, 0.01% or less N, and 0.0003% to 0.0030% B on a mass basis, the composition further containing one or more of Cr, Mo, and W, the composition further containing one or more of Nb, Ti, Cu, Ni, V, an REM, Ca, and Mg as required, the remainder being Fe and inevitable impurities. A semi-finished product having the above steel composition is heated, hot rolling is performed, air cooling is performed, reheating is performed, and accelerated cooling is then performed or accelerated cooling is performed immediately after hot rolling.