Metal treatment – Stock – Magnetic
Patent
1990-10-19
1992-06-30
Sheehan, John P.
Metal treatment
Stock
Magnetic
420117, H01F 104
Patent
active
051259915
ABSTRACT:
A silicon-containing steel sheet having a low iron loss has such a crystal structure that crystal grains having an inclination angle of {110} face of not more than 10.degree. with respect to the sheet surface are included in an amount of not less than 80 vol % and exhibit a graining surface pattern in which boundaries of these crystal grains form stepwise difference or groove of not less than 0.4 .mu.m as a maximum height. This sheet is produced by subjecting a grain oriented silicon steel sheet after final annealing to a magnetically smoothening treatment by electrolysis in an squeous solution containing at least one of water soluble halides.
REFERENCES:
patent: 2700006 (1955-01-01), Dunn
patent: 3159511 (1964-12-01), Taguchi et al.
patent: 3932236 (1976-01-01), Wada et al.
patent: 4203784 (1980-05-01), Kuroki et al.
patent: 4318758 (1982-03-01), Kuroki et al.
"New Grain-Oriented Silicon Steel Orientcore Hi-B", by Satoru Taguchi et al., Nippon Steel Technical Report Overseas No. 4, Nov. 1973, pp. 1-10.
Chemical Abstracts, vol. 83, No. 12, Sep. 22, 1975, Columbus, Ohio, U.S.A.; Kitayama et al., "Forming insulation film on silicon steel plate", p. 274, Abstract no. 101 790b & Japan 74 46 219.
Ishitobi Hirotake
Kami Tikara
Kobayashi Yasuhiro
Nishike Ujihiro
Sujita Shigeko
Kawasaki Steel Corporation
Sheehan John P.
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