Title:
ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/111735
Kind Code:
A2
Abstract:
The oriented electrical steel sheet according to one embodiment of the present invention has, on the surface of an electrical steel sheet, a groove comprising a bottom part and a side part, has a metal oxide layer on the groove, and has an insulation layer on the metal oxide layer, the steel sheet comprising: a normal groove having the metal oxide layer thicker than 0.5 ㎛ positioned on the bottom part and the side part; and a defective groove having the metal oxide layer not thicker than 0.5 ㎛ positioned on the side part or the bottom part, wherein the thickness of the insulation layer on the normal groove is greater than or equal to 0.5 ㎛ and less than 1.5 ㎛, and the thickness of the insulation layer on the defective groove is 1.5 to 10 ㎛.
Inventors:
KWON OH-YEOUL (KR)
KIM WOO-SIN (KR)
PARK JONG-TAE (KR)
KIM WOO-SIN (KR)
PARK JONG-TAE (KR)
Application Number:
PCT/KR2019/016379
Publication Date:
June 04, 2020
Filing Date:
November 26, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C23C28/04
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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