Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
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.
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patent: 3990923 (1976-11-01), Takashina et al.
patent: 4554029 (1985-11-01), Schoen et al.
patent: 4645547 (1987-02-01), Krause et al.
Knipe Randal K.
Salsgiver James A.
Stroble Carl P.
Allegheny Ludlum Corporation
Sheehan John P.
Viccaro Patrick J.
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