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:
May. 30, 2023
Filed:
Mar. 19, 2019
Nippon Steel Corporation, Tokyo, JP;
Nobusato Morishige, Tokyo, JP;
Takashi Kataoka, Tokyo, JP;
Haruhiko Atsumi, Tokyo, JP;
Yasuhiro Mayumi, Tokyo, JP;
Toshiya Takechi, Tokyo, JP;
Naoto Masumitsu, Tokyo, JP;
Tomoya Suenaga, Tokyo, JP;
Masamitsu Kubota, Tokyo, JP;
Hideyuki Hamamura, Tokyo, JP;
Kazuhiko Fukutani, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A method for manufacturing a grain-oriented electrical steel sheet according to an aspect of the present invention includes a step of obtaining a hot-rolled steel sheet by carrying out hot rolling on a slab containing a predetermined component composition with a remainder including Fe and impurities, a step of obtaining a hot-rolled annealed sheet by carrying out hot-rolled sheet annealing as necessary, a step of carrying out pickling to obtain a pickled sheet, a step of carrying out cold rolling to obtain a cold-rolled steel sheet, a step of carrying out primary recrystallization annealing, a step of applying an annealing separating agent including MgO to a surface and then carrying out final annealing to obtain a final-annealed sheet, and a step of applying an insulating coating and then carrying out flattening annealing.