Invention Grant
- Patent Title: Grain-oriented electrical steel sheet and method for manufacturing same
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Application No.: US17415816Application Date: 2019-12-24
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Publication No.: US12031191B2Publication Date: 2024-07-09
- Inventor: Satoshi Arai , Hideyuki Hamamura , Kazutoshi Takeda , Takeo Aramaki , Hirotoshi Tada
- Applicant: NIPPON STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP 18248167 2018.12.28
- International Application: PCT/JP2019/050582 2019.12.24
- International Announcement: WO2020/138069A 2020.07.02
- Date entered country: 2021-06-18
- Main IPC: H01F1/147
- IPC: H01F1/147 ; C21D3/04 ; C21D8/00 ; C21D8/12 ; C21D9/46 ; C23C22/07 ; C23C22/82

Abstract:
This grain-oriented electrical steel sheet includes a base steel sheet, a forsterite-based primary film disposed on a surface of the base steel sheet, and a phosphate-based tension-imparting film containing no chromium, which is disposed on a surface of the primary film. In a case where a Ti content and a S content are respectively expressed as XTi and XS, by mass %, the forsterite-based primary film satisfies Expression (1) and Expression (2). A strain-introduced magnetic domain control is performed on the grain-oriented electrical steel sheet
0.10≤XTi/XS≤10.00 Expression (1)
XTi+XS≥0.10 mass %. Expression (2)
0.10≤XTi/XS≤10.00 Expression (1)
XTi+XS≥0.10 mass %. Expression (2)
Information query