Invention Grant
- Patent Title: Grain-oriented electrical steel sheet, wound transformer core using the same, and method for producing wound core
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Application No.: US16966256Application Date: 2019-01-31
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Publication No.: US11984249B2Publication Date: 2024-05-14
- Inventor: Hirotaka Inoue , Seiji Okabe , Takeshi Omura
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP 18014244 2018.01.31
- International Application: PCT/JP2019/003399 2019.01.31
- International Announcement: WO2019/151399A 2019.08.08
- Date entered country: 2020-07-30
- Main IPC: H01F27/245
- IPC: H01F27/245 ; H01F1/147 ; H01F1/16 ; H01F41/02
Abstract:
A grain-oriented electrical steel sheet for a wound transformer core. The steel sheet having a sheet thickness t, where t and an iron loss deterioration ratio obtained by subjecting the steel sheet under elliptic magnetization satisfy the following relations: (i) when t≤0.20 mm, the iron loss deterioration ratio is 60% or less; (ii) when 0.20 mm
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