Title:
THICK LOW-CARBON-EQUIVALENT HIGH-TOUGHNESS WEAR-RESISTANT STEEL PLATE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/052335
Kind Code:
A1
Abstract:
A thick low-carbon-equivalent high-toughness wear-resistant steel plate and a manufacturing method therefor, relating to the technical field of steel production. The steel plate comprises the following chemical components by mass percentage: C: 0.15%-0.17%, Si: 0.20%-0.40%, Mn: 0.90%-1.10%, P≤0.012%, S≤0.002%, Cr: 0.60%-0.80%, Mo: 0.30%-0.50%, Ni: 0.50%-0.70%, Ti: 0.008%-0.020%, Nb≤0.050%, V≤0.020%, B: 0.0010%-0.0020%, Alt: 0.04%-0.07%, N≤0.0040%, H≤0.0002%, with the balance being Fe and inevitable impurities. Ceq≤0.60%, and Pcm≤0.32%. The mechanical properties of the steel plate are as follows: the yield strength is greater than or equal to 1000 MPa, the tensile strength is greater than or equal to 1100 MPa, the elongation is greater than or equal to 10%, the surface Brinell hardness is greater than 400 HB, the core Brinell hardness is greater than 330 HB, the -40℃Akv impact absorption power value is greater than or equal to 27 J, the welding performance is good, the core hardness is not less than 80% of the surface hardness, and the low-temperature impact performance is also good.
Inventors:
LEI XIAORONG (CN)
WANG XIN (CN)
YAN QIANGJUN (CN)
JIN JIANFENG (CN)
HUANG BIAOKAI (CN)
LI QINGCHUN (CN)
GE XIN (CN)
WANG XIN (CN)
YAN QIANGJUN (CN)
JIN JIANFENG (CN)
HUANG BIAOKAI (CN)
LI QINGCHUN (CN)
GE XIN (CN)
Application Number:
PCT/CN2020/133462
Publication Date:
March 17, 2022
Filing Date:
December 02, 2020
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C21D8/02
Domestic Patent References:
| WO2018215600A1 | 2018-11-29 |
Foreign References:
| CN109280850A | 2019-01-29 | |||
| CN110846571A | 2020-02-28 | |||
| CN101775545A | 2010-07-14 | |||
| CN105385951A | 2016-03-09 | |||
| CN107675095A | 2018-02-09 | |||
| CN106756544A | 2017-05-31 | |||
| CN101748333B | 2012-02-01 | |||
| KR20120071615A | 2012-07-03 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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