Title:
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/121256
Kind Code:
A1
Abstract:
A non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 2.5-4.0% of Si, 0.1-1.5% of Al, and 0.1-1.5% of Mn, with the remainder comprising Fe and inevitable impurities. The non-oriented electrical steel sheet according to an embodiment of the present invention has an average grain size of 50-100 μm, and the area percentage of grains having a grain size of 20 μm or less is at least 0.5%.
Inventors:
LEE HUNJU (KR)
SHIN SU-YONG (KR)
KIM YUNSU (KR)
SHIN SU-YONG (KR)
KIM YUNSU (KR)
Application Number:
PCT/KR2022/020887
Publication Date:
June 29, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/02; C21D8/12; C21D9/46; C22C38/04; C22C38/06; C22C38/12; C22C38/14; H01F1/147
Foreign References:
| JP2019178373A | 2019-10-17 | |||
| US20190189318A1 | 2019-06-20 | |||
| KR20210080658A | 2021-07-01 | |||
| KR101587967B1 | 2016-01-22 | |||
| KR20130116332A | 2013-10-23 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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