Invention Grant
- Patent Title: Hot-rolled steel sheet for producing non-oriented electrical steel sheet and method of producing same
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Application No.: US14759891Application Date: 2014-01-16
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Publication No.: US10026534B2Publication Date: 2018-07-17
- Inventor: Hiroaki Toda , Yoshiaki Zaizen , Tadashi Nakanishi , Yoshihiko Oda
- 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: JP2013-033387 20130222
- International Application: PCT/JP2014/000200 WO 20140116
- International Announcement: WO2014/129106 WO 20140828
- Main IPC: C21D8/12
- IPC: C21D8/12 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; H01F1/147 ; C21D6/00 ; C21D9/46 ; C22C38/12 ; C22C38/00 ; H01F41/02 ; B21B3/02 ; C22C38/60 ; H01F1/16

Abstract:
By using a hot-rolled steel sheet of a predetermined chemical composition, and annealing the hot-rolled steel sheet in nitrogen atmosphere at 1000° C. for 30 seconds, and then immersing in a solution of 7% HCl at 80° C. for 60 seconds to obtain a hot-rolled steel sheet having a pickling weight loss of 10 g/m2 or more and 35 g/m2 or less, it is possible to obtain a hot-rolled steel sheet for producing a non-oriented electrical steel sheet that not only has excellent magnetic properties such as iron loss properties and magnetic flux density, but also has reduced steel sheet surface defects and an excellent manufacturing yield.
Public/Granted literature
- US20150348686A1 HOT-ROLLED STEEL SHEET FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCING SAME Public/Granted day:2015-12-03
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