Grain-oriented silicon steel sheets having a very low iron loss

Details Grain-oriented silicon steel sheets having a very low iron loss Grain-oriented silicon steel sheets having a very low iron loss

1983-12-01

1986-04-01

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148113, 148 315, 148 3155, H01F 104

Patent

active

045796084

ABSTRACT:
Grain oriented silicon steel sheets having a very low iron loss W.sub.17/50 of lower than 0.90 W/kg, in which Si content is 2-4%, are produced by containing at least one of Se and S in an amount of 0.010-0.035% and at least one of Sb, As, Bi and Sn in an amount of 0.010-0.080% as inhibitor, making a final gauge to be 0.15-0.25 mm, forsterite coating formed on the steel sheet surfaces in the final annealing to be 1-4 g/m.sup.2 per one surface and a secondary crystallized grain size to be 1-6 mm.

REFERENCES:
patent: 3105782 (1963-10-01), Walter
patent: 3562029 (1971-02-01), Goglio et al.
patent: 3764406 (1973-10-01), Littmann
patent: 4108694 (1978-08-01), Shiozaki et al.
patent: 4130447 (1978-12-01), Marianeschi et al.
patent: 4160708 (1979-07-01), Arendt et al.
patent: 4165990 (1979-08-01), Reynolds et al.
patent: 4280856 (1981-07-01), Inokuti et al.
A Dictionary of Metallurgy, A. D. Merriman, 1958, p. 78.

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