Title:
HIGH-TOUGHNESS AND HIGH-AGING IMPACT STEEL PLATE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/142101
Kind Code:
A1
Abstract:
Disclosed are a high-toughness and high-aging impact steel plate and a manufacturing method therefor, and the present invention relates to the technical field of steel production. The high-toughness and high-aging impact steel plate comprises the following chemical components by mass percent: 0.12-0.22% of C, 0.10-0.60% of Si, 1.15-1.60% of Mn, less than 0.020% of P, less than 0.015% of S, with the following one or more alloy elements being added: 0-0.060% of Nb, 0-0.12% of Ti and 0.010-0.050% of Al, with the balance being iron and inevitable impurity elements. The steel plate can withstand and resist complex marine stress at a low temperature of -40°C, the lowest yield strength thereof is 345 MPa, same has good toughness at a low temperature of -40°C, excellent aging performance, and also has good welding performance and a low carbon equivalent.
Inventors:
FENG YONG (CN)
WU JUNPING (CN)
JIN XING (CN)
XU CHUNSEN (CN)
NI WEIYING (CN)
LIU JIHONG (CN)
PAN ZHONGDE (CN)
HU QILONG (CN)
WU JUNPING (CN)
JIN XING (CN)
XU CHUNSEN (CN)
NI WEIYING (CN)
LIU JIHONG (CN)
PAN ZHONGDE (CN)
HU QILONG (CN)
Application Number:
PCT/CN2021/096176
Publication Date:
July 07, 2022
Filing Date:
May 26, 2021
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C21C7/00; C21C7/06; C21C7/072; C21C7/10; C22C33/04; C22C38/04; C22C38/06; C22C38/12; C22C38/14
Foreign References:
| CN112680672A | 2021-04-20 | |||
| CN111560561A | 2020-08-21 | |||
| CN109321838A | 2019-02-12 | |||
| CN110846585A | 2020-02-28 | |||
| KR20110130974A | 2011-12-06 | |||
| CN101418417A | 2009-04-29 | |||
| CN110699599A | 2020-01-17 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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