Grain-oriented electrical steel sheet

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11990261
APP PUB NO 20230178276A1
SERIAL NO

17998356

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a linear groove formation pattern with which both an effect of reducing the building factor and a high magnetic flux density can be obtained. In a grain-oriented electrical steel sheet having a plurality of linear grooves extending in a direction crossing a rolling direction of the steel sheet on a surface of the steel sheet, a surface of the steel sheet between the linear grooves has a recessed defect that is recessed from the surface, a volume fraction of the recessed defect in the steel sheet is 0.0025 vol % or more and 0.01 vol % or less of a steel sheet without the recessed defect, and discontinuous portions that disrupt the extension of the linear grooves are provided at a frequency of 30 or more and 200 or less per square meter of the steel sheet.

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Patent Owner(s)

  • JFE STEEL CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichihara, Yoshihisa Tokyo, JP 13 1
Inoue, Hirotaka Tokyo, JP 42 193
Omura, Takeshi Tokyo, JP 57 435
Senda, Kunihiro Tokyo, JP 51 210

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