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:
Jun. 17, 2025
Filed:
Jan. 22, 2020
Jfe Steel Corporation, Tokyo, JP;
Tomoyuki Okubo, Tokyo, JP;
Takaaki Tanaka, Tokyo, JP;
Yoshiaki Zaizen, Tokyo, JP;
Yoshihiko Oda, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
In a production of a non-oriented electrical steel sheet comprising subjecting a slab containing a particular composition to a hot rolling, a hot-band annealing, a cold rolling to form a cold-rolled sheet and a finish annealing, a rolling reduction of a final finish rolling pass in the hot rolling is not less than 10%, and a coiling temperature is not higher than 620° C., and a soaking temperature in the finish annealing is 600 to 800° C. to achieve such properties that a recrystallization ratio is less than 100% as an area ratio, a strength C is not less than 2.0 and a strength difference C−D is not more than 2.0, where C is a strength at Φ=0° and φ=0° and D is a strength at Φ=20° and φ=0° in a section of φ=45° of ODF obtained in a central layer of a sheet thickness.