Process for producing grain-oriented electrical steel sheet havi

Details Process for producing grain-oriented electrical steel sheet havi Process for producing grain-oriented electrical steel sheet havi

1986-12-19

1988-10-04

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 27, 148 28, H01F 104

Patent

active

047754303

ABSTRACT:
For improving the properties of a glass film on a grain-oriented electrical steel sheet, the annealing separator applied on a decarburized steel sheet is prepared by: calcining at a high temperature to reduce the activity thereof; hydrating only on the outermost layer of MgO particles; and adding a Ti, B, or S compound to MgO.

REFERENCES:
patent: 3868280 (1975-02-01), Yamamoto et al.
patent: 3956028 (1976-05-01), Boggs et al.
patent: 4096000 (1978-01-01), Wada et al.
patent: 4171994 (1979-10-01), Miller
patent: 4249966 (1981-02-01), Ichida et al.
patent: 4344802 (1982-08-01), Haselkorn
patent: 4443425 (1984-04-01), Sopp et al.
patent: 4543134 (1985-04-01), Tanaka et al.

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