Invention Grant
- Patent Title: Electrical steel sheet
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Application No.: US14373973Application Date: 2013-01-22
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Publication No.: US10584406B2Publication Date: 2020-03-10
- Inventor: Takeshi Imamura , Minoru Takashima , Tatsuhiko Hiratani
- Applicant: JFE Steel Corporation
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: DLA Piper LLP (US)
- Priority: JP2012-015053 20120127
- International Application: PCT/JP2013/051200 WO 20130122
- International Announcement: WO2013/111751 WO 20130801
- Main IPC: H01F1/147
- IPC: H01F1/147 ; C22C38/34 ; C22C38/44 ; C22C38/42 ; C22C38/60 ; C22C38/00 ; C22C38/22 ; C21D8/12 ; C22C38/02 ; H01F1/16 ; C22C38/04 ; C22C38/06 ; C22C38/08 ; C22C38/12 ; C22C38/16 ; C22C38/20

Abstract:
An electrical steel sheet has a composition including C: less than 0.010 mass %, Si: 1.5˜10 mass % and the balance being Fe and incidental impurities, wherein a main orientation in a texture of a steel sheet is //ND and an intensity ratio relative to randomly oriented specimen of the main orientation is not less than 5 and, preferably an intensity ratio relative to randomly oriented specimen of {111} orientation is not less than 10, an intensity ratio relative to randomly oriented specimen of {310} orientation is not more than 3 and Si concentration has a gradient that it is high at a side of a surface layer and low at a central portion in the thickness direction and a maximum value of the Si concentration is not less than 5.5 mass % and a difference between maximum and minimum values is not less than 0.5 mass %.
Public/Granted literature
- US20150013850A1 ELECTRICAL STEEL SHEET Public/Granted day:2015-01-15
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