Decarburized steel sheet for thin oriented silicon steel sheet h

Details Decarburized steel sheet for thin oriented silicon steel sheet h Decarburized steel sheet for thin oriented silicon steel sheet h

1993-12-14

1996-11-05

Ip, Sikyin

Metal treatment

Stock

Magnetic

148113, 427127, H01F 104

Patent

active

055713424

ABSTRACT:
A decarburized steel sheet for a thin oriented silicon steel sheet having improved magnetic and coating characteristics and a method of producing the same. Silicon steel strip is hot-rolled, cold-rolled to a final thickness of about 0.28 mm or less, subjected to decarburization/primary-recrystallization annealing, coated with an annealing separator, and thereafter subjected to finishing annealing. In the decarburization/primary-recrystallization annealing step, a novel subscale is formed at the steel sheet surface having a fayalite-silica composition ratio in accordance with an infrared reflection absorbance ratio of about 0.5 to 5.5, and a marked oxygen amount of about 0.4 to 1.6 g/m.sup.2.

REFERENCES:
patent: 5203928 (1993-04-01), Inokuti et al.

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