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:
Jan. 08, 2019
Filed:
Dec. 11, 2012
Baoshan Iron & Steel Co., Ltd., Shanghai, CN;
Shishu Xie, Shanghai, CN;
Xiandong Liu, Shanghai, CN;
Xiao Chen, Shanghai, CN;
Hongxu Hei, Shanghai, CN;
Bo Wang, Shanghai, CN;
Aihua Ma, Shanghai, CN;
Liang Zou, Shanghai, CN;
Huawei Zhang, Shanghai, CN;
Wei Cao, Shanghai, CN;
Feng Zhang, Shanghai, CN;
Junliang Liu, Shanghai, CN;
Baoshan Iron & Steel Co., Ltd., Shanghai, CN;
Abstract
The present invention provides a non-oriented silicon steel with excellent magnetic properties and a manufacturing process therefor. During the manufacturing process of the present invention, the temperature T of the molten steel of steel tapped from a converter during steelmaking and the carbon content [C] and the free oxygen content [O] comply with the following formula: 7.27×10≤[O][C]e≤2.99×10, and the final annealing step uses tension annealing at a low temperature for a short time. A non-oriented silicon steel with a low iron loss, and excellent anisotropy of iron loss can be obtained by means of the manufacturing process of the present invention.