Method of producing extra-low iron loss grain oriented silicon s

Details Method of producing extra-low iron loss grain oriented silicon s Method of producing extra-low iron loss grain oriented silicon s

1989-11-30

1991-01-15

Berman, Jack I.

Radiant energy

Irradiation of objects or material

Ion or electron beam irradiation

2504921, 2504531, H01F 104

Patent

active

049856359

ABSTRACT:
An extra-low iron loss grain oriented silicon steel sheet is produced by irradiating electron beam to an insulation coating formed on a grain oriented silicon steel sheet after finish annealing in a direction crossing the rolling direction of the sheet, whereby the magnetic properties are not degraded even if the steel sheet is subjected to a strain relief annealing. If necessary, an inert gas may be introduced into the vicinity of electron beam irradiated zone of the coating.

REFERENCES:
patent: 2989633 (1961-06-01), Wilson
patent: 3081485 (1963-03-01), Steigerwald
patent: 3564238 (1971-02-01), Martin et al.
patent: 3634645 (1972-01-01), Lempert
patent: 3676673 (1972-07-01), Coleman
patent: 4252413 (1981-02-01), Mablo
patent: 4482811 (1984-11-01), Burgess
patent: 4845370 (1989-07-01), Thompson et al.

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