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 10566119 B1

PDFFull Text
Date of Patent:
Feb. 18, 2020

Filed:

Dec. 11, 2012

Oriented silicon steel and method for manufacturing same

Applicant:

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

Inventors:

Guohua Yang, Shanghai, CN;

Xiandong Liu, Shanghai, CN;

Guobao Li, Shanghai, CN;

Yongjie Yang, Shanghai, CN;

Zhuochao Hu, Shanghai, CN;

Hongxu Hei, Shanghai, CN;

Jun Zhang, Shanghai, CN;

Dejun Su, Shanghai, CN;

Huande Sun, Shanghai, CN;

Meihong Wu, Shanghai, CN;

Assignee:

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

Attorney:

Eversheds Sutherland (US) LLP

Primary Examiner:

Colleen P Dunn

Assistant Examiner:

Anthony M Liang

Int. Cl.
CPC ...
H01F 1/147 (2006.01); C21D 8/12 (2006.01); H01F 1/18 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C23C 8/80 (2006.01); C21D 1/26 (2006.01); C21D 3/04 (2006.01); C21D 6/00 (2006.01); C21D 9/46 (2006.01); C23C 8/02 (2006.01); C23C 8/26 (2006.01); H01F 1/16 (2006.01); H01F 41/02 (2006.01); H01F 41/32 (2006.01);
U.S. Cl.
CPC ...
H01F 1/14775 (2013.01); C21D 1/26 (2013.01); C21D 3/04 (2013.01); C21D 6/008 (2013.01); C21D 8/1216 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1255 (2013.01); C21D 8/1261 (2013.01); C21D 8/1283 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C23C 8/02 (2013.01); C23C 8/26 (2013.01); C23C 8/80 (2013.01); H01F 1/14783 (2013.01); H01F 1/16 (2013.01); H01F 1/18 (2013.01); H01F 41/02 (2013.01); H01F 41/32 (2013.01);
Abstract

The invention discloses an oriented silicon steel with excellent magnetic properties and a manufacturing method thereof. The present invention obtains the oriented silicon steel with excellent magnetic properties by controlling the area ratio of small crystal grains of D<5 mm in an oriented silicon steel finished product to be not more than 3%, and controlling the ratio μ17/μ15 of the magnetic conductivity under the magnetic induction of 1.7 T and 1.5 T in the oriented silicon steel finished product to be 0.50 or more. In addition, by using a slab of the oriented silicon steel with suitable components and an optimized cold rolling step, the present invention effectively decreases the heating temperature of the slab and the production cost thereof, and simultaneously better controls the size and ratio of the crystal grains in the oriented silicon steel finished product and the magnetic conductivity in a certain range of magnetic induction, ensures that secondary recrystallization has good Goss texture orientation and finally, stably obtains the oriented silicon steel product with excellent magnetic properties.

Find Patent Forward Citations

Loading…