Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/121201
Kind Code:
A1
Abstract:
The present invention relates to a grain-oriented electrical steel sheet and a manufacturing method therefor. The grain-oriented electrical steel sheet according to one embodiment of the present invention may comprise, in wt%, 2.0 to 6.0% of Si, 0.005 to 0.04% of acid-soluble Al, 0.01 to 0.2% of Mn, at most 0.01% of N, 0.0005 to 0.045% of P, at most 0.010% of S, 0.01 to 0.05% of Sb, at most 0.005% of C, 0.03 to 0.08% of Sn, 0.01 to 0.2% of Cr, 0.031 to 0.25% of Cu, 0.01 to 0.05% of Mo, and the remainder in Fe and other unavoidable impurities, and satisfy formula 1. 0.03 〈 [Sn] 〈 │√[Cu] + [Sb] - 0.32 │ (In formula 1, [Sn], [Cu], and [Sb] represent the wt% of Sn, Cu, and Sb, respectively, √ represents a square root, and │ │ represents an absolute value).
Inventors:
SONG DAEHYUN (KR)
LEE SANGWOO (KR)
PARK JUNESOO (KR)
LEE SANGWOO (KR)
PARK JUNESOO (KR)
Application Number:
PCT/KR2022/020774
Publication Date:
June 29, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/34; C21D8/12; C22C38/20; C22C38/22; H01F1/147
Foreign References:
| KR20200076517A | 2020-06-29 | |||
| KR20190078163A | 2019-07-04 | |||
| KR20200066062A | 2020-06-09 | |||
| JP2017101311A | 2017-06-08 | |||
| JP2017002356A | 2017-01-05 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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