Non orientation electromagnetic steel sheet possessing high magnetic permeability and its manufacturing method

Application Number: 00108116
Application Date: 2000.04.28
Publication Number: 1293261
Publication Date: 2001.05.02
Priority Information: 1999/10/13 JP 290900/1999
International: C21D8/12;C22C38/06
Applicant(s) Name: Nippon Steel Corp.
Inventor(s) Name: Kawamata Kametaro;Arita Yoshihiro;Kanao Shinichi
Patent Agency Code: 11038
Patent Agent: duan chengen
Abstract A non-oriented electrical steel sheet excellent in permeability whose steel contains, in percentage by weight, 0.1%<=Si<=1.0%, 0.1%<=Mn<=0.8%, 0.1%<=Al<=1.0% and the balance of Fe and unavoidable impurities, and which has an AlphaGamma transformation, an electrical resistivity of not less than 10×10<->8 OMEGAm and not greater than 32×10<-8> OMEGAm and a permeability fraction Mu15/60 of not less than 1500 (Gauss/Oe); and a method of producing the same.