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Title:
CU-CONTAINING NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/037064
Kind Code:
A1
Abstract:
Disclosed in the present invention is a Cu-containing high-cleanliness non-oriented electrical steel sheet, comprising the following chemical elements in percentage by mass: 0＜C≤0.003%; Si: 0.1-2.0%; Mn: 0.1-0.55%; S: 0-0.004%; Cu: 0.003-0.2%; Al: 0.1-1.0%; and the balance being Fe and inevitable impurities. In addition, also disclosed is a continuous annealing process for the Cu-containing high-cleanliness non-oriented electrical steel plate. In addition, also disclosed is a manufacturing method for the Cu-containing high-cleanliness non-oriented electrical steel plate, comprising the steps: smelting and casting; hot rolling; normalizing; cold rolling; continuous annealing process described above; and insulating a coating to obtain a finished non-oriented electrical steel sheet. The Cu-containing high-cleanliness non-oriented electrical steel plate is high in cleanliness and excellent in magnetic performance.

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Inventors:
ZHANG FENG (CN)
WANG BO (CN)
SHEN KANYI (CN)
LIU BAOJUN (CN)
LI GUOBAO (CN)
CHU SHUANGJIE (CN)
Application Number:
PCT/CN2020/111406
Publication Date:
March 04, 2021
Filing Date:
August 26, 2020
Export Citation:
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Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/02; C21D8/12; C22C38/00; C22C38/04; C22C38/06; C22C38/16; H01F1/147
Foreign References:
CN107075640A2017-08-18
CN108368561A2018-08-03
CN109852878A2019-06-07
CN107208171A2017-09-26
JPH09263909A1997-10-07
CN103290190A2013-09-11
CN103014503A2013-04-03
CN1888112A2007-01-03
CN102453837A2012-05-16
Other References:
See also references of EP 4001451A4
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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