首页> 外国专利> 785 MPa LEVEL EXTRA-THICK QUENCHED AND TEMPERED RACK STEEL PLATE FOR OFFSHORE PLATFORMS AND PREPARATION METHOD THEREFOR

785 MPa LEVEL EXTRA-THICK QUENCHED AND TEMPERED RACK STEEL PLATE FOR OFFSHORE PLATFORMS AND PREPARATION METHOD THEREFOR

机译：785 MPA水平超厚淬火和钢化架钢板，用于海上平台和制备方法

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摘要

The present invention discloses a 785 MPa level extra-thick quenched and tempered rack steel plate for offshore platforms and a preparation method therefor, wherein chemical components of the steel plate by weight percentage are: 0.08%-0.15% of C, 0.60%-1.5% of Mn, 0.10%-0.50% of Si, 0.002%-0.005% of S, 0.005%-0.015% of P, 2.7%-4.0% of Ni, 0.40%-1.00% of Cr, 0.30%-0.70% of Mo, 0.10%-0.40% of Cu, 0%-0.080% of Nb, 0%-0.10% of V, 0%-0.08% of Ti, 0.02%-0.08% of Al, 0.0008%-0.0015% of B, and the balance of Fe and other unavoidable impurities. The present invention adopts a low C, high Ni—Cr—Mo alloying and Nb—V—Ti microalloying component system, has a yield strength of ≥795 MPa, a tensile strength of ≥865 MPa, a −60° C. Charpy V-notch impact energy of ≥140 J, a Z value of ≥35%, and a maximum thickness of 100 mm, and can be used to manufacture racks for offshore platforms.

机译：本发明公开了一种用于海上平台的785MPa水平超厚的淬火和钢化架钢板及其制备方法，其中钢板的重量百分比的化学成分为：0.08％-0.15％C，0.60％-1.5 Mn％，0.10％-0.50％Si，0.002％-0.005％，0.005％-0.015％，Ni的2.7％-4.0％，0.40％-1.00％Cr，0.30％-0.70％铜，0.10％-0.40％Cu，0％-0.080％的Nb，0％-0.10％，0％-0.08％的Ti，0.02％-0.08％Al，0.0008％-0.0015％B，和Fe和其他不可避免的杂质的平衡。本发明采用低C，高Ni-Cr-Mo合金化和Nb-V-Ti微合金化组分系统，其屈服强度≥795MPa，拉伸强度≥865MPa，A -60°C夏比V. - 没有≥140J的冲击能量，Z值≥35％，最大厚度为100毫米，可用于制造离岸平台的机架。

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公开/公告号US2022025474A1

专利类型
公开/公告日2022-01-27

原文格式PDF
申请/专利权人 NORTHEASTERN UNIVERSITY;
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申请/专利号US202017130354
发明设计人 QIBIN YE;QINGHAI WANG;CHENG ZHOU;YONG TIAN;ZHAODONG WANG;
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申请日2020-12-22
分类号C21D8/02;C21D6;C22C38/50;C22C38/46;C22C38/48;C22C38/44;C22C38/42;C22C38/06;C22C38/04;C22C38/02;C22C38;C22C38/54;
国家 US
入库时间 2022-08-24 23:33:33

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