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:
Jul. 03, 2018
Filed:
Sep. 28, 2012
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Shigehiro Takajo, Tokyo, JP;
Hiroi Yamaguchi, Tokyo, JP;
Takeshi Omura, Tokyo, JP;
Hirotaka Inoue, Tokyo, JP;
Seiji Okabe, Tokyo, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/12 (2006.01); C22C 38/04 (2006.01); C22C 38/60 (2006.01); H01F 1/16 (2006.01); H01F 1/18 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C23C 30/00 (2006.01); C21D 1/38 (2006.01);
U.S. Cl.
CPC ...
C21D 8/1277 (2013.01); C21D 1/38 (2013.01); C21D 8/12 (2013.01); C21D 8/1283 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/60 (2013.01); C23C 30/00 (2013.01); H01F 1/16 (2013.01); H01F 1/18 (2013.01); C21D 2201/05 (2013.01);
Abstract
A grain-oriented electrical steel sheet to which electron beam irradiation is applied, has a film and a thickness of t (mm), wherein no rust is produced on a surface of the steel sheet after a humidity cabinet test lasting 48 hours at a temperature of 50° C. in an atmosphere of 98% humidity, and iron loss Wafter the electron beam irradiation is reduced by at least (−500 t+200 t−6.5) % of the iron loss Wbefore the electron beam irradiation and is (5 t−2 t+1.065) W/kg or less.