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

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United States of America Patent

PATENT NO 8657968
APP PUB NO 20130139932A1
SERIAL NO

13816773

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Abstract

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This method of manufacturing a grain-oriented electrical steel sheet includes, between a cold rolling process and a winding process, a groove formation process of irradiating the surface of a silicon steel sheet with a laser beam multiple times at predetermined intervals in a sheet passing direction, over an area from one end edge to the other end edge, in a sheet width direction of the silicon steel sheet, thereby forming a groove along a locus of the laser beam.

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Patent Owner(s)

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

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamamura, Hideyuki Tokyo, JP 41 190
Sakai, Tatsuhiko Tokyo, JP 108 1003

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