Invention Grant
- Patent Title: Method for refining magnetic domains of grain-oriented electrical steel sheet
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Application No.: US16472484Application Date: 2017-12-20
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Publication No.: US11313011B2Publication Date: 2022-04-26
- Inventor: Oh-Yeoul Kwon , Ki-Young Min , Se-Min Park , Jong-Tae Park , Seong-Cheol Hong
- Applicant: POSCO
- Applicant Address: KR Gyeongsangbuk-do
- Assignee: POSCO
- Current Assignee: POSCO
- Current Assignee Address: KR Gyeongsangbuk-do
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR10-2016-0177082 20161222
- International Application: PCT/KR2017/015128 WO 20171220
- International Announcement: WO2018/131819 WO 20180719
- Main IPC: C21D10/00
- IPC: C21D10/00 ; B23K26/0622 ; B23K26/364 ; B23K26/073 ; C21D3/04 ; C21D6/00 ; C21D8/12 ; C21D9/46 ; B23K103/04
Abstract:
A method for refining magnetic domains of a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a step of preparing a grain-oriented electrical steel sheet; and a step of forming a groove by irradiating a quasi-continuous laser beam of which a duty is from 98.0 to 99.9% on a surface of the grain-oriented electrical steel sheet.
Public/Granted literature
- US20210130922A1 METHOD FOR REFINING MAGNETIC DOMAINS OF GRAIN-ORIENTED ELECTRICAL STEEL SHEET Public/Granted day:2021-05-06
Information query
