Metal treatment – Compositions – Heat treating
Patent
1982-08-17
1985-11-12
Sheehan, John P.
Metal treatment
Compositions
Heat treating
148 3155, 428611, 428900, 75123L, C22C 3802
Patent
active
045525960
ABSTRACT:
In a method of producing a grain-oriented electromagnetic steel sheet, a laser beam is irradiated onto the steel sheet, which has been subjected to a final high temperature annealing in order to approximate the crystal orientation of the sheet in a (110) [001] orientation. Because of the laser beam irradiation, regions of high dislocation density are locally formed in the steel sheet and subdivide the magnetic domains, with the result that a low watt loss is achieved.
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patent: 4242155 (1980-12-01), Morito et al.
Ichiyama Tadashi
Iuchi Tohru
Kuroki Katsuro
Yamaguchi Shigehiro
Nippon Steel Corporation
Sheehan John P.
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