Method of manufacturing grain-oriented silicon steel sheet havin

Details Method of manufacturing grain-oriented silicon steel sheet havin Method of manufacturing grain-oriented silicon steel sheet havin

1996-02-05

1997-09-09

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

H01F 114

Patent

active

056651783

ABSTRACT:
A method of manufacturing a grain-oriented silicon steel sheet having excellent and stable magnetic characteristics which includes the steps of subjecting a silicon steel slab to hot rolling to form a hot-rolled sheet, cold rolling the hot-rolled sheet at least once with intermediate annealings between successive cold rollings to form a cold-roiled sheet, and thereafter primary recrystallization annealing the cold-rolled sheet to form a primary recrystallized sheet. The primary recrystallized sheet is then final finish annealed, which includes a secondary recrystallization annealing and a purifying annealing during which the steel slab is coated with an annealing separator. The coercive force of the primary recrystallized steel sheet is controlled to a predetermined range before the start of secondary recrystallization.

REFERENCES:
patent: 5413640 (1995-05-01), Manabe et al.

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