Invention Grant
- Patent Title: Grain-oriented electrical steel sheet
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Application No.: US17422048Application Date: 2020-01-16
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Publication No.: US12215401B2Publication Date: 2025-02-04
- Inventor: Shinsuke Takatani , Yoshihiro Arita , Shunsuke Okumura , Shohji Nagano
- 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: JP2019-005475 20190116
- International Application: PCT/JP2020/001183 WO 20200116
- International Announcement: WO2020/149342 WO 20200723
- Main IPC: C22C38/00
- IPC: C22C38/00 ; C21D8/02 ; C21D8/12 ; C21D9/46 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/08 ; C22C38/16 ; C22C38/60

Abstract:
A grain-oriented electrical steel sheet of the present invention has a base steel sheet, an amorphous oxide layer formed on the base steel sheet, and a tension-insulation coating formed on the amorphous oxide layer, in which the base steel sheet contains, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80 to 7.00%, Mn: 1.50% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0 to 0.80%, N: 0 to 0.012%, P: 0 to 0.50%, Ni: 0 to 1.00%, Sn: 0 to 0.30%, and Sb: 0 to 0.30%, a remainder is Fe and an impurity, a surface glossiness Gs20(A) in a direction parallel to a rolling direction is 2.0 to 70, and a surface glossiness Gs20(B) in a direction perpendicular to the rolling direction is 2.0 to 70.
Public/Granted literature
- US20220119906A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET Public/Granted day:2022-04-21
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