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Title:
STEEL BOARD FOR POLAR MARINE ENGINEERING AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/022066
Kind Code:
A1
Abstract:
Disclosed are a steel board for polar marine engineering and a preparation method therefor. According to weight percentage, the components of the steel board are: C: 0.06-0.09％, Si: 0.20-0.35％, Mn: 1.48-1.63％, Nb: 0.020％-0.035％, Ti: 0.010％-0.020％, V: 0.020％-0.035％, Ni: 0.08％-0.17％, Als: 0.015％-0.040％, P: ≤0.013％ and S: ≤0.005％. The preparation method for the steel board comprises: pre-refining, refining and casting to obtain a cast billet, and the slowly cooling down same. The slowly cooled billet is heated and then rolled out to obtain the steel board; and the steel board is cooled down and ready. The steel has an excellent comprehensive performance in terms of having high strength and low temperature resistance, being easy to weld and corrosion proof, and the steel has good low-temperature aging impact toughness.

Inventors:
MA HENG (CN)
WANG ZHONGXUE (CN)
WANG TENGFEI (CN)
WANG YUEXIANG (CN)
DU CHUANZHI (CN)
LI TAO (CN)
YU QUANCHENG (CN)
NING WEI (CN)
CHEN AIJIAO (CN)
Application Number:
PCT/CN2021/098735
Publication Date:
February 03, 2022
Filing Date:
June 07, 2021
Export Citation:
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Assignee:
LAIWU STEEL YINSHAN SECTION CO LTD (CN)
International Classes:
C22C38/02; C21D8/02; C22C38/04; C22C38/12
Foreign References:
CN105369132A2016-03-02
CN111455271A2020-07-28
CN103436784A2013-12-11
CN101358320A2009-02-04
CN106834944A2017-06-13
CN102534383A2012-07-04
CN105239003A2016-01-13
JP2002180132A2002-06-26
CN110964978A2020-04-07
JPH04154911A1992-05-27
CN102851611A2013-01-02
CN103060715A2013-04-24
CN108728743A2018-11-02
CN104674117A2015-06-03
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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