Title:
CORROSION-RESISTANT 460 MPA-GRADE STEEL PLATE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/082955
Kind Code:
A1
Abstract:
A corrosion-resistant 460 MPa-grade steel plate and a production method therefor. The steel plate uses a corrosion-resistant alloying component system and has Cr, Ni, Mo, Cu, P added therein, so that the usage of precious alloy is reduced while the corrosion resistance and the welding performance are ensured. While impurity elements are strictly controlled, one or more rare earth elements from La, Ce, Pr, and Nd are used to purify molten steel, such that the corrosion resistance is further improved. The comprehensive design of chemical components and accurate control over technological parameters in rolling and cooling processes achieve accurate control over the structure, inclusion content, and size of the steel plate. In this way, the marine atmospheric corrosion-resistant 460 MPa-grade steel plate for use in wind power tower cylinders and having good comprehensive performance is obtained.
Inventors:
MA HAN (CN)
LU CHUNJIE (CN)
LU CHUNJIE (CN)
Application Number:
PCT/CN2023/122660
Publication Date:
April 25, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
INSTITUTE OF RES OF IRON AND STEEL JIANGSU PROVINCE/SHA STEEL CO LTD CN (CN)
JIANGSU SHAGANG STEEL CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
JIANGSU SHAGANG STEEL CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
International Classes:
C22C33/04; C21D8/02; C22C38/02; C22C38/04; C22C38/06; C22C38/42; C22C38/44; C22C38/48
Foreign References:
| CN115341132A | 2022-11-15 | |||
| CN101660099A | 2010-03-03 | |||
| JP2000319752A | 2000-11-21 | |||
| CN101403075A | 2009-04-08 | |||
| CN107574374A | 2018-01-12 | |||
| CN113667888A | 2021-11-19 | |||
| CN113755751A | 2021-12-07 | |||
| JP2013028852A | 2013-02-07 | |||
| JP2001020035A | 2001-01-23 |
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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