Method for refining magnetic domains of electrical steels to red

Details Method for refining magnetic domains of electrical steels to red Method for refining magnetic domains of electrical steels to red

1988-03-03

1990-04-24

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148112, 148121, 148122, 21912119, 21912135, H01F 104

Patent

active

049197339

ABSTRACT:
A method is provided for domain refinement of electrical sheet products, such as grain-oriented silicon steel and amorphous magnetic materials, by subjecting at least one surface of the steel to an electron beam treatment to produce narrow substantially parallel bands of treated regions separated by untreated regions substantially transverse to the direction of strip manufacture to improve core loss without damaging the surface or any coating thereon.

REFERENCES:
patent: 3192078 (1965-06-01), Gordon et al.
patent: 3276922 (1966-10-01), Sery et al.
patent: 3477883 (1969-11-01), Sery et al.
patent: 3990923 (1976-11-01), Takashina et al.
patent: 4554029 (1985-11-01), Schoen et al.
patent: 4645547 (1987-02-01), Krause et al.

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