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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 12692574 B1

PDFFull Text
Date of Patent:
Jul. 28, 2026

Filed:

Nov. 09, 2021

Non-oriented electrical steel sheet, and method for manufacturing same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Yunsung Kim, Seoul, KR;

Jin Bae Kim, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

KED & ASSOCIATES, LLP

Primary Examiner:

Jophy S Koshy

Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 1/74 (2006.01); C21D 6/00 (2006.01); C21D 8/1216 (2026.01); C21D 8/1244 (2026.01); C21D 8/1277 (2026.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/16 (2006.01); C22C 38/34 (2006.01); C22C 38/42 (2006.01); H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 1/74 (2013.01); C21D 6/001 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1255 (2013.01); C21D 8/1272 (2013.01); C21D 8/1277 (2013.01); C21D 8/1283 (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 38/16 (2013.01); C22C 38/34 (2013.01); C22C 38/42 (2013.01); H01F 1/14783 (2013.01); C22C 2202/02 (2013.01);
Abstract

Disclosed are a non-oriented electrical steel sheet and a method for manufacturing same, wherein the texture of the electrical steel sheet is optimized after cold rolling by controlling the temperature and atmosphere of decarburization annealing and final annealing, and thus excellent iron loss can be obtained even at low temperatures. In addition, disclosed are a non-oriented electrical steel sheet and a method for manufacturing same, wherein processes, from the processing of the electrical steel sheet into motor component to a final heat-treatment, are improved to enhance the strength of the texture aligned in the direction of easy magnetization and thereby improve the magnetic characteristics of the steel sheet.

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