Invention Grant
- Patent Title: Non-oriented electrical steel sheet, manufacturing method of non-oriented electrical steel sheet, and manufacturing method of motor core
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Application No.: US16312159Application Date: 2017-08-02
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Publication No.: US11295881B2Publication Date: 2022-04-05
- Inventor: Yoshiaki Natori , Hiroyoshi Yashiki , Masaru Takahashi , Kazutoshi Takeda , Takuya Matsumoto
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2016-154206 20160805
- International Application: PCT/JP2017/028144 WO 20170802
- International Announcement: WO2018/025941 WO 20180208
- Main IPC: H01F1/147
- IPC: H01F1/147 ; C22C38/00 ; C21D8/12 ; C22C38/60 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/14 ; C22C38/34 ; C22C38/42 ; C22C38/50
Abstract:
A non-oriented electrical steel sheet has a predetermined chemical composition, and when an average value of Mn concentrations in a range from a surface of a base iron to a position where a depth from the surface of the base iron is 2 μm is set to [Mn2], and an Mn concentration at a position where a depth from the surface of the base iron is 10 μm is set to [Mn10], the base iron satisfies the following expression 1. 0.1≤[Mn2]/[Mn10]≤0.9 (Expression 1)
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