Title:
NON-ORIENTED SILICON STEEL FOR NEW ENERGY DRIVE MOTOR, AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/070982
Kind Code:
A1
Abstract:
Disclosed in the present invention are a non-oriented silicon steel for a new energy drive motor, and a production method therefor. The silicon steel is prepared by means of steelmaking, continuous casting, hot rolling, normalizing, acid pickling, non-preheating single-stand cold rolling, annealing, cooling, coating, and finishing which are sequentially carried out. No Cu, Cr, Ni, Nb, V, and Ti are added during steelmaking; the silicon steel has the following chemical components: 2.95-3.15% of Si, 0.75-0.95% of Al, 4.6-4.9% of Si + 2Al, 0.5-0.7% of Mn, 0.03-0.04% of Sn, less than or equal to 0.0025% of C, and the balance of iron, wherein Mn/S ≥ 380, and Al/N ≥ 200. By means of the present invention, the strength is improved, while the magnetic performance is ensured, such that the problem of the balance between the magnetic performance and the strength present in the prior art is solved, and the application requirement for the drive motor of a new energy automobile can be met.
Inventors:
YUE CHONGXIANG (CN)
QIAN HONGWEI (CN)
WU SHENGJIE (CN)
ZHAN DONGFANG (CN)
QIAN HONGWEI (CN)
WU SHENGJIE (CN)
ZHAN DONGFANG (CN)
Application Number:
PCT/CN2022/074302
Publication Date:
May 04, 2023
Filing Date:
January 27, 2022
Export Citation:
Assignee:
INSTITUTE OF RES OF IRON AND STEEL JIANGSU PROVINCE/SHA STEEL CO LTD CN (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
ZHANGJIAGANG YANGZI RIVER COLD ROLLED SHEET CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
ZHANGJIAGANG YANGZI RIVER COLD ROLLED SHEET CO LTD (CN)
International Classes:
C22C38/02; C21D8/12; C22C33/04; C22C38/04; C22C38/20; C22C38/24; C22C38/26; C22C38/28; C22C38/42; C22C38/46; C22C38/48; C22C38/50
Foreign References:
| CN114196887A | 2022-03-18 | |||
| CN111206192A | 2020-05-29 | |||
| CN113684422A | 2021-11-23 | |||
| CN109252102A | 2019-01-22 | |||
| CN112176250A | 2021-01-05 | |||
| EP0357800A1 | 1990-03-14 |
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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