Low iron loss grain oriented silicon steel sheets and method...

Details Low iron loss grain oriented silicon steel sheets and method... Low iron loss grain oriented silicon steel sheets and method...

C - Chemistry, Metallurgy

21

D

148/8

C21D 8/12 (2006.01) C21D 10/00 (2006.01)

Patent

CA 2001213

In grain oriented silicon steel sheets provided with surface layer after finish annealing, microareas of the surface layer are locally pushed into at least an inside of base metal through electron beam irradiation in a direction substantially perpendicular to the rolling direction of the sheet, whereby iron loss of the sheet is considerably reduced.

Dans les tôles d'acier au silicium à grains orientés avec couche de surface après un recuit de finition, des micro-surfaces de la couche de surface sont localement poussées à l'intérieur d'au moins un métal de base au moyen d'une irradiation par faisceaux d'électrons dans une direction essentiellement perpendiculaire au sens de laminage de la tôle, par ce moyen, la perte dans le fer de la tôle est considérablement diminuée.

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