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Patent Searching and Data


Title:
HIGH-STRENGTH STEEL BAR AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/232818
Kind Code:
A1
Abstract:
Disclosed are a high-strength steel bar and a production method therefor. The chemical components of the high-strength steel bar comprise, in mass percentage, 0.15-0.32% of C, 0.5-1.9% of Si+Mn, 1.1-2.1% of Mn+Cr+Mo+Ni, 0.02-0.8% of V, and 0.01-0.3% of at least one of Nb, Ti and Al, with the balance being Fe and inevitable impurities, wherein Mn=(2.5-3.5)Si, and carbon equivalent Ceq=C+Mn/6+(Cr+Mo +V)/5+(Cu+Ni)/15≤0.56%.

Inventors:
ZHANG YU (CN)
MA HAN (CN)
ZHOU YUN (CN)
CHEN HUANDE (CN)
Application Number:
CN2019/096977
Publication Date:
November 26, 2020
Filing Date:
July 22, 2019
Export Citation:
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Assignee:
INSTITUTE OF RES OF IRON & STEEL JIANGSU PROVINCE/SHA STEEL CO LTD (CN)
ZHANGJIAGANG HONGCHANG STEEL PLATE CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
International Classes:
C22C38/02; C22C38/04; C22C38/06; C22C38/44; C22C38/46; C22C38/48; C22C38/50; C22C38/54; C21C7/072; C21D8/08
Foreign References:
CN104451410A2015-03-25
CN102732787A2012-10-17
CN102796962A2012-11-28
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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