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:
Nov. 14, 2017
Filed:
Apr. 27, 2011
Manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic performance
Aihua MA, Shanghai, CN;
BO Wang, Shanghai, CN;
Shishu Xie, Shanghai, CN;
Zhanyuan HU, Shanghai, CN;
Liang Zou, Shanghai, CN;
Zitao Wang, Shanghai, CN;
Yuhua Zhu, Shanghai, CN;
Jie Huang, Shanghai, CN;
Bingzhong Jin, Shanghai, CN;
Xiandong Liu, Shanghai, CN;
Aihua Ma, Shanghai, CN;
Bo Wang, Shanghai, CN;
Shishu Xie, Shanghai, CN;
Zhanyuan Hu, Shanghai, CN;
Liang Zou, Shanghai, CN;
Zitao Wang, Shanghai, CN;
Yuhua Zhu, Shanghai, CN;
Jie Huang, Shanghai, CN;
Bingzhong Jin, Shanghai, CN;
Xiandong Liu, Shanghai, CN;
Baoshan Iron & Steel Co., Ltd., Shanghai, CN;
Abstract
A manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic property includes the steps of smelting a chemical composition of non-oriented silicon steel, by weight percent, is: C≦0.0040%, Si:0.1˜0.8%, Al:0.002˜1.0%, Mn:0.10˜1.50%, P:≦0.2%, Sb:0.04˜0.08%, S≦0.0030%, N≦0.0020%, Ti≦0.0020%, and the rest is Fe and unavoidable inclusions. The molten steel is then cast into billets which are hot-rolled into a hot-rolled product. The heating temperature for the billet is 1100°˜1150° and the finish-rolling temperature is 860°˜920°. The hot-rolled product is then air cooled for a period of time within a range determined by air cooling time t: (2+30×Sb%)s≦t≦7 s. The hot-rolled product is reeled at a temperature ≧720° and cold-rolled to form cold-rolled plate with a target thickness at a reduction ratio of 70˜78% followed by heating up the cold-rolled plate to 800˜1000° at heating rate of ≧15°/s, and holding time of 10s˜25s.