Process for producing grain oriented silicon steel sheets...

Details Process for producing grain oriented silicon steel sheets... Process for producing grain oriented silicon steel sheets...

C - Chemistry, Metallurgy

21

D

148/8

C21D 8/12 (2006.01)

Patent

CA 2033059

The present invention realizes the stable production of grain oriented silicon steel sheets having excellent magnetic properties under high productivity through effectively combining aging treatment with tandem rolling, in which cold rolling is effected until a final thickness is attained. In the final cold rolling step of the production of the grain oriented silicon steel sheets, the tandem rolling is first effected, and then continuous heat treatment is effected, preferably under application of tension.

La présente invention permet la fabrication stable de tôles d'acier au silicium à grains orientés qui possèdent d'excellentes propriétés magnétiques avec une forte productivité en combinant efficacement le traitement par vieillissement au laminage en tandem, au moyen de laquelle le laminage à froid est réalisé jusqu'à ce qu'une épaisseur finale ait été atteinte. Lors de l'étape finale de laminage à froid de la fabrication des tôles d'acier au silicium à grains orientés, le laminage en tandem est d'abord réalisé, puis le traitement thermique continu est effectué, de préférence, en appliquant en même temps une tension.

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