Invention Grant
- Patent Title: Manufacturing method of grain-oriented magnetic steel sheet
- Patent Title (中): 晶粒取向电磁钢板的制造方法
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Application No.: US13261144Application Date: 2010-07-15
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Publication No.: US08409368B2Publication Date: 2013-04-02
- Inventor: Yoshiyuki Ushigami , Norikazu Fujii
- Applicant: Yoshiyuki Ushigami , Norikazu Fujii
- Applicant Address: JP Tokyo
- Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kenyon & Kenyon LLP
- Priority: JP2009-168974 20090717; JP2009-169011 20090717; JP2010-014724 20100126
- International Application: PCT/JP2010/061938 WO 20100715
- International Announcement: WO2011/007817 WO 20110120
- Main IPC: H01F1/147
- IPC: H01F1/147 ; H01F1/18
Abstract:
A nitriding treatment (Step S6) in which an N content of a decarburization-annealed steel strip is increased is performed between start of a decarburization annealing (Step S4) and occurrence of secondary recrystallization in a finish annealing (Step S5). In hot rolling (Step S1), a silicon steel material is held in a temperature range between 1000° C. and 800° C. for 300 seconds or longer, and then finish rolling is performed.
Public/Granted literature
- US20120111455A1 MANUFACTURING METHOD OF GRAIN-ORIENTED MAGNETIC STEEL SHEET Public/Granted day:2012-05-10
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