Method of producing grain oriented electrical steel sheet having

Details Method of producing grain oriented electrical steel sheet having Method of producing grain oriented electrical steel sheet having

1990-03-29

1991-09-24

Yee, Deborah

Metal treatment

Compositions

Heat treating

148 12F, C21D 802

Patent

active

050511386

ABSTRACT:
A method of producing a grain oriented electrical steel sheet having a high magnetic flux density comprises the steps of continuously rapid quench solidifying a molten steel essentially consisting of 0.03 to 0.10% of C, 2.5 to 4.5% of Si, 0.02 to 0.15% of Mn, 0.01 to 0.04% of Al acid soluble by weight and the remainder substantially Fe, to obtain a thin strip, subjecting the thin strip to cold rolling one or two or more stages, with an annealing therebetween, decarburization annealing, and finishing annealing wherein the content of S in the molten steel is 0.01% or less the content of N in the molten steel is 0.003% or less, and sulfide and nitride are contained in the annealing separator for the finishing annealing.

REFERENCES:
patent: 3941623 (1976-03-01), Takashima et al.
patent: 4171994 (1979-10-01), Miller, Jr.
patent: 4225366 (1980-09-01), Harase et al.

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