Title:
490-MPA-GRADE THICK STEEL PLATE WITH HIGH CORE FATIGUE STRENGTH AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/002207
Kind Code:
A1
Abstract:
Provided in the present invention are a 490-MPa-grade thick steel plate with a high core fatigue strength and a manufacturing method therefor. The thick steel plate comprises the following chemical components in percentages by mass: C: 0.045-0.076%, Si: 0.19-0.31%, Mn: 0.95-1.13%, P: ≤0.008%, S: ≤0.002%, Als: 0.010-0.040%, Nb: 0.014-0.038%, V: 0.025-0.041%, Ti: 0.011-0.022%, Ni: 1.35-1.55%, Ce: 0.020-0.040%, and Fe and other inevitable impurities. The thick steel plate has a good core fatigue performance, and can be used in supporting parts and components, which have certain requirements for the core fatigue performance of steel plates, in the fields of buildings, engineering machinery, ocean engineering, etc.
Inventors:
LU XIAOHUI (CN)
GAO SHAN (CN)
ZHANG CAIYI (CN)
SHI QING (CN)
MEI FENG (CN)
GAO SHAN (CN)
ZHANG CAIYI (CN)
SHI QING (CN)
MEI FENG (CN)
Application Number:
PCT/CN2023/103582
Publication Date:
January 04, 2024
Filing Date:
June 29, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/02; B22D11/00; C22C33/04; C22C38/04; C22C38/06; C22C38/08; C22C38/12; C22C38/14; C22C38/24; C22C38/26
Foreign References:
| CN114875331A | 2022-08-09 | |||
| CN115572905A | 2023-01-06 | |||
| CN110241357A | 2019-09-17 | |||
| CN1113391A | 1995-12-13 | |||
| JP2016204690A | 2016-12-08 | |||
| JP2003342672A | 2003-12-03 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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