Rolling stand, rolling train and method for rolling metal strip

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 1/08 (2006.01) B21C 37/04 (2006.01)

Patent

CA 2620789

The invention relates to a rolling stand, a rolling train and a method of rolling a metal strip preprofiled in a stepped manner. In order to ensure that the metal strip is free from corrugations in the longitudinal direction of the metal strip even after a thickness reduction with respect to individual steps, it is proposed according to the invention that the thickness reduction be carried out with respect to specific steps while taking into account the following mathematical interrelationship: .DELTA.hj/hj = .DELTA.hi+i/hi+1 = .epsilon. = constant, where .DELTA.hj represents the amount of thickness reduction in the region of the ith step and h.iota. represents the size of the resulting thickness of the metal strip 200 after the rolling in the region of the ith step.

L'invention concerne une cage de laminoir, un train de laminoir ainsi qu'un procédé pour laminer une bande de métal préprofilée en échelons. Pour garantir que la bande de métal est exempte d'ondulations dans le sens longitudinal, même après une réduction d'épaisseur individuelle des échelons, il est proposé, conformément à l'invention, d'effectuer la réduction d'épaisseur spécifiquement à l'échelonnement en tenant compte de la loi suivante : .DELTA.hj/hj = .DELTA.hi+i/hi+1 = .epsilon. = constant, .DELTA.hj désignant le taux de réduction de l'épaisseur dans la zone du ième échelon et hj la valeur de l'épaisseur résultante de la bande (200) de métal après le laminage dans la zone du ième échelon.

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