Invention Grant
- Patent Title: Grain-oriented electrical steel sheet and method for manufacturing same
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Application No.: US16333729Application Date: 2017-09-21
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Publication No.: US11560603B2Publication Date: 2023-01-24
- Inventor: Yasuyuki Hayakawa , Masanori Takenaka , Takeshi Imamura
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kenja IP Law PC
- Priority: JPJP2016-184742 20160921
- International Application: PCT/JP2017/034170 WO 20170921
- International Announcement: WO2018/056379 WO 20180329
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C21D6/00 ; C21D8/12 ; C22C38/00 ; C22C38/04 ; C22C38/06 ; C22C38/60 ; C22C38/02 ; H01F1/16 ; C21D8/00 ; C22C38/08 ; C22C38/14 ; C22C38/20 ; C22C38/22 ; C22C38/26 ; C22C38/34 ; H01F1/147

Abstract:
Provided is a grain-oriented electrical steel sheet that has excellent magnetic properties and can be manufactured by secondary recrystallization orientation control using coil annealing with high productivity. A grain-oriented electrical steel sheet comprises a specific chemical composition, wherein an average value of a deviation angle (α2+β2)1/2 calculated from a deviation angle α from ideal Goss orientation around an ND rotation axis and a deviation angle β from ideal Goss orientation around a TD rotation axis is 5.0° or less, and an area ratio Rβ of crystal grains with β≤0.50° is 20% or less.
Public/Granted literature
- US20190233914A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Public/Granted day:2019-08-01
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