Invention Application
- Patent Title: HOT-ROLLED STEEL SHEET FOR NON-ORIENTED ELECTROMAGNETIC STEEL SHEETS
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Application No.: US17782005Application Date: 2021-02-19
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Publication No.: US20230013043A1Publication Date: 2023-01-19
- Inventor: Takeru ICHIE , Yoshihiro ARITA
- Applicant: NIPPON STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2020-027497 20200220
- International Application: PCT/JP2021/006334 WO 20210219
- Main IPC: C22C38/60
- IPC: C22C38/60 ; C22C38/16 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C21D9/46 ; C21D8/12 ; C21D6/00 ; H01F1/147

Abstract:
A hot-rolled steel sheet for non-oriented electrical steel sheets includes, by mass %: C: 0.0010% to 0.0050%; Si: 1.90% to 3.50%; Al: 0.10% to 3.00%; Mn: 0.05% to 2.00%; P: 0.100% or less; S: 0.005% or less; N: 0.0040% or less; B: 0.0060% or less; Sn: 0% to 0.50%; Sb: 0% to 0.50%; Cu: 0% to 0.50%; REM: 0% to 0.0400%; Ca: 0% to 0.0400%; Mg: 0% to 0.0400%; and a remainder including Fe and impurities, in which a hardness HD of a deformed structure of a thickness middle portion (½t position) in a sheet width direction end portion of the hot-rolled steel sheet for non-oriented electrical steel sheets is Hv 220 or less.
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