logo

For the Inventor, By the Inventor

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 10395807 B1

PDFFull Text
Date of Patent:
Aug. 27, 2019

Filed:

Oct. 23, 2014

Grain-oriented electrical steel sheet having excellent magnetic characteristics and coating adhesion

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Takashi Terashima, Kurashiki, JP;

Makoto Watanabe, Okayama, JP;

Masanori Uesaka, Kurashiki, JP;

Ryuichi Suehiro, Kurashiki, JP;

Toshito Takamiya, Kurashiki, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Robert T Butcher

Int. Cl.
CPC ...
H01F 1/147 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); H01F 1/18 (2006.01); C21D 8/02 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); C23C 22/33 (2006.01); C23C 22/74 (2006.01);
U.S. Cl.
CPC ...
H01F 1/14783 (2013.01); C21D 8/0205 (2013.01); C21D 8/0236 (2013.01); C21D 8/0273 (2013.01); C21D 8/0289 (2013.01); C21D 8/12 (2013.01); C21D 8/1233 (2013.01); C21D 8/1244 (2013.01); C21D 8/1272 (2013.01); C21D 8/1283 (2013.01); C21D 8/1288 (2013.01); C21D 9/46 (2013.01); C22C 38/00 (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 38/16 (2013.01); C22C 38/60 (2013.01); C23C 22/33 (2013.01); C23C 22/74 (2013.01); H01F 1/18 (2013.01); C21D 2201/05 (2013.01);
Abstract

There is provided a grain-oriented electrical steel sheet stably having excellent magnetic characteristics and coating adhesion even when a rapid heating is conducted in a primary recrystallization annealing (decarburization annealing). Concretely, it is a grain-oriented electrical steel sheet provided on its sheet surface with a tension-applying type insulation coating constituted with a coating layer A formed on a steel sheet side and mainly composed of an oxide and a coating layer B formed on a surface side and mainly composed of glass, characterized in that a ratio R (σ/σ) of a tension σof the coating layer B on the surface side applied to the steel sheet to a tension σof the coating layer on the steel sheet side A applied to the steel sheet is within a range of 1.20-4.0.

Find Patent Forward Citations

Loading…