Patent ID: 11970751
Assignee: NIPPON STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 6:
7. A method for manufacturing the grain-oriented electrical steel sheet according to claim 1, the method comprising:
a strain region forming process of irradiating the grain-oriented electrical steel sheet having the base steel sheet, the intermediate layer disposed to be in contact with the base steel sheet, and the insulation coating disposed to be in contact with the intermediate layer with a laser beam or an electron beam and forming a strain region which extends in the direction intersecting the rolling direction on the surface of the base steel sheet,
wherein, in the strain region forming process, a temperature of the central portion of the strain region in the rolling direction of the base steel sheet and an extension direction of the strain region is heated to 900° C. or higher and 1500° C. or lower.