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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 12768017 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Aug. 26, 2020

Non-oriented electrical steel sheet and manufacturing method therefor

Applicant:

Baoshan Iron & Steel Co., Ltd, Shanghai, CN;

Inventors:

Feng Zhang, Shanghai, CN;

Shuangjie Chu, Shanghai, CN;

Bo Wang, Shanghai, CN;

Wenyue Zhang, Shanghai, CN;

Kanyi Shen, Shanghai, CN;

Guobao Li, Shanghai, CN;

Assignee:

BAOSHAN IRON & STEEL CO., LTD, Shanghai, CN;

Attorneys:

Elizabeth L. Neal

DeWitt LLP

Primary Examiner:

Jophy S Koshy

Assistant Examiner:

Joshua S Carpenter

Int. Cl.
CPC ...
C22C 38/00 (2006.01); C21D 8/02 (2026.01); C21D 8/0221 (2026.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01);
U.S. Cl.
CPC ...
C22C 38/008 (2013.01); C21D 8/02 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01);
Abstract

Disclosed is a non-oriented electrical steel sheet with low magnetic anisotropy, which comprises the following chemical elements in mass percentage: 0<C≤0.005%; Si: 2.0-3.5%; Mn: 0.1-2.0%; at least one of Sn and Sb: 0.003-0.2%; Al: 0.2-1.8%; the balance being Fe and inevitable impurities. Further disclosed is a manufacturing method for the above non-oriented electrical steel sheet with low magnetic anisotropy, which includes the following steps: (1) smelting and casting; (2) hot rolling; (3) normalizing; (4) cold rolling; (5) continuous annealing: rapidly heating a cold-rolled steel sheet from an initial temperature of 350° C.-750° C. to a soaking temperature at a heating rate of 50-800° C./s, and performing soaking and heat preservation; and (6) applying an insulating coating to obtain a finished non-oriented electrical steel sheet. The non-oriented electrical steel sheet is characterized by low iron loss and low magnetic anisotropy at high frequency.

Find Patent Forward Citations

Zhang, Feng. (2026). Non-oriented electrical steel sheet and manufacturing method therefor (U.S. Patent No. 12768017). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12768017

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