Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND MAGNETIC DOMAIN REFINING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/139334
Kind Code:
A1
Abstract:
A grain-oriented electrical steel sheet, according to one embodiment of the present invention, comprises: linear grooves formed on one surface or both surfaces of the electrical steel sheet in the direction (X1 direction) crossing a rolling direction; and punctuated grooves formed on one surface or both surfaces of the electrical steel sheet so as to be arranged in the direction (X2 direction) crossing the rolling direction, wherein the plurality of linear grooves and the plurality of punctuated grooves are formed in the rolling direction, and an interval (D3) between the punctuated grooves with respect to an arrangement direction (X2 direction) of the punctuated grooves is 0.02 to 1.7 times the interval (D2) between the punctuated grooves with respect to the rolling direction.
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Inventors:
KWON OHYEOUL (KR)
KIM WOOSIN (KR)
SONG JAEHWA (KR)
KIM WOOSIN (KR)
SONG JAEHWA (KR)
Application Number:
PCT/KR2021/019216
Publication Date:
June 30, 2022
Filing Date:
December 16, 2021
Export Citation:
Assignee:
POSCO (KR)
International Classes:
H01F1/16; B23K26/364; C21D8/12; H01F41/02
Foreign References:
| KR20200103100A | 2020-09-01 | |||
| JPH07320922A | 1995-12-08 | |||
| KR20080106305A | 2008-12-04 | |||
| KR20160019919A | 2016-02-22 | |||
| KR20180073343A | 2018-07-02 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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