Grain-oriented electrical steel sheet and method for manufacturing the same

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United States of America

PATENT NO 11898215
SERIAL NO

17421850

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Abstract

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The grain-oriented electrical steel sheet according to the present invention is a grain-oriented electrical steel sheet having a base steel sheet (1), an intermediate layer (4) disposed to be in contact with the base steel sheet (1), and an insulation coating (3) disposed to be in contact with the intermediate layer (4), and the grain-oriented electrical steel sheet includes a surface of the base steel sheet (1) having a groove (G) which extends in a direction intersecting a rolling direction of the base steel sheet (1), in which in a cross-sectional view of a plane parallel to the rolling direction and a sheet thickness direction of the base steel sheet (1), when a region between end portions of the groove (G) is defined as a groove part (RG), an average thickness of the intermediate layer (4) of the groove part (RG) is 0.5 times or more and 3.0 times or less an average thickness of the intermediate layer (4) other than the groove part (RG), and an area ratio of voids in the insulation coating (3) of the groove part (RG) is 15% or less.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamamura, Hideyuki Tokyo, JP 41 190
Takahashi, Fumiaki Tokyo, JP 65 1662
Takahashi, Masaru Tokyo, JP 255 1818
Takatani, Shinsuke Tokyo, JP 52 16
Ushigami, Yoshiyuki Tokyo, JP 83 295
Yamamoto, Shinji Tokyo, JP 421 8069

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