Invention Grant
- Patent Title: Grain-oriented electrical steel sheet and manufacturing method thereof
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Application No.: US13978925Application Date: 2012-01-12
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Publication No.: US10208372B2Publication Date: 2019-02-19
- Inventor: Fumiaki Takahashi , Yoshiyuki Ushigami , Kazumi Mizukami , Shuichi Nakamura , Norikazu Fujii , Norihiro Yamamoto , Masahide Urago
- Applicant: Fumiaki Takahashi , Yoshiyuki Ushigami , Kazumi Mizukami , Shuichi Nakamura , Norikazu Fujii , Norihiro Yamamoto , Masahide Urago
- 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: JP2011-004359 20110112
- International Application: PCT/JP2012/050502 WO 20120112
- International Announcement: WO2012/096350 WO 20120719
- Main IPC: C23C8/02
- IPC: C23C8/02 ; H01F1/01 ; C21D8/12 ; C22C38/00 ; C22C38/02 ; H01F1/18 ; C22C38/04 ; C22C38/06 ; C23C28/04 ; C22C38/08 ; C22C38/12 ; C22C38/16 ; C22C38/34 ; C22C38/60 ; C21D6/00

Abstract:
A grain-oriented electrical steel sheet being a grain-oriented electrical steel sheet containing Si of 0.8 mass % to 7 mass %, Mn of 0.05 mass % to 1 mass %, B of 0.0005 mass % to 0.0080 mass %, each content of Al, C, N, S, and Se of 0.005 mass % or less, and a balance being composed of Fe and inevitable impurities and having a glass coating film made of composite oxide mainly composed of forsterite on the steel sheet surface, in which when glow discharge optical emission spectrometry (GDS) to the surface of a secondary coating film formed on the surface of the glass coating film under a predetermined condition is performed, a peak, of B, in emission intensity having a peak position in emission intensity different from a peak position, of Mg, in emission intensity is obtained and the peak position, of B, in emission intensity from the steel sheet surface is deeper than the peak position, of Mg, in emission intensity.
Public/Granted literature
- US20130292006A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF Public/Granted day:2013-11-07
Information query
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