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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12424360 B1

PDFFull Text
Date of Patent:
Sep. 23, 2025

Filed:

Mar. 28, 2022

Grain-oriented electrical steel sheet and method for manufacturing same

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Takashi Kataoka, Tokyo, JP;

Tomohito Tanaka, Tokyo, JP;

Masataka Iwaki, Tokyo, JP;

Kazutoshi Takeda, Tokyo, JP;

Hideyuki Hamamura, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart Kolasch & Birch, LLP

Primary Examiner:

Daniel J Schleis

Int. Cl.
CPC ...
H01F 1/147 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C21D 10/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/16 (2006.01); C22C 38/34 (2006.01); C22C 38/60 (2006.01); C23D 3/00 (2006.01); C23D 5/04 (2006.01); C23D 13/00 (2006.01);
U.S. Cl.
CPC ...
H01F 1/14783 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1255 (2013.01); C21D 8/1261 (2013.01); C21D 8/1266 (2013.01); C21D 8/1283 (2013.01); C21D 8/1288 (2013.01); C21D 9/46 (2013.01); C21D 10/005 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/16 (2013.01); C22C 38/34 (2013.01); C22C 38/60 (2013.01); C23D 3/00 (2013.01); C23D 5/04 (2013.01); C23D 13/00 (2013.01); C21D 2201/05 (2013.01); C22C 2202/02 (2013.01);
Abstract

This grain-oriented electrical steel sheet includes a base steel sheet having a predetermined chemical composition, a glass coating formed on the base steel sheet, and a tension-applied insulation coating formed on the glass coating, on a front surface of the base steel sheet, a plurality of linear strains that extend continuously or intermittently in a direction intersecting with a rolling direction are present, intervals p in the rolling direction of the plurality of linear strains adjacent to each other are 3.0 to 9.0 mm, widths of the linear strains are 10 to 250 μm, and, in an X-ray topographic spectrum in a range of 1.50 mm in the rolling direction that is obtained from an X-ray topographic image of the front surface and includes the linear strain at a center, a full width at half maximum of a peak of the X-ray topographic spectrum including a maximum value of a spectral intensity is 0.02 mm or more and 0.10 mm or less.

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