Invention Grant
- Patent Title: Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
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Application No.: US16470078Application Date: 2018-01-16
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Publication No.: US11021771B2Publication Date: 2021-06-01
- Inventor: Hiroyoshi Yashiki , Yoshiaki Natori , Kazutoshi Takeda , Susumu Mukawa , Takuya Matsumoto , Koji Fujita , Takashi Morohoshi , Masafumi Miyazaki
- 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: JPJP2017-005213 20170116
- International Application: PCT/JP2018/000974 WO 20180116
- International Announcement: WO2018/131710 WO 20180719
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C21D8/12 ; C21D6/00 ; C22C38/60 ; C22C38/14 ; C22C38/06 ; C22C38/00 ; H01F1/16 ; C22C38/04

Abstract:
A non-oriented electrical steel sheet contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.0% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, O: 0.0110% to 0.0350%, Sn: 0% to 0.050%, Sb: 0% to 0.050%, Ti: more than 0% and 0.0050% or less, and a remainder including Fe and impurities, in which Sn+Sb: 0.050% or less, Si−0.5×Mn: 2.0% or more, and an O content in a sheet thickness central portion excluding a surface layer portion which is a range from a front surface and a rear surface to a position of 10 μm in a depth direction is less than 0.0100%.
Public/Granted literature
- US20190316221A1 NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET Public/Granted day:2019-10-17
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