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.:
Date of Patent:
Jan. 12, 2021
Filed:
Oct. 29, 2013
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Assignee:
JFE Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 1/34 (2006.01); H01F 1/16 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); H01F 41/04 (2006.01);
U.S. Cl.
CPC ...
C21D 1/34 (2013.01); C21D 8/12 (2013.01); C21D 8/1244 (2013.01); C21D 9/46 (2013.01); H01F 1/16 (2013.01); H01F 41/04 (2013.01); C21D 2201/05 (2013.01);
Abstract
A method of manufacturing a grain-oriented electrical steel sheet is provided. When irradiating the surface of a grain-oriented electrical steel sheet having a sheet thickness t with an electron beam in a direction intersecting a rolling direction, the irradiation energy E(t) of the electron beam is adjusted to satisfy Ewmin(0.23)×(1.61−2.83×t (mm))≤E(t)≤Ewmin(0.23)×(1.78−3.12×t (mm)) (Expression (1)) using the value of the irradiation energy Ewmin(0.23) that minimizes iron loss for material with a sheet thickness of 0.23 mm.