초록 ▼

A tandem rolling mill is operated such that roll stands of an upstream stage of the mill adjacent to a strip inlet thereof are positioned relative to each other to effect a strip crown control or an edge drop control, while roll stands of a downstream stage of the mill adjacent to a strip outlet the

A tandem rolling mill is operated such that roll stands of an upstream stage of the mill adjacent to a strip inlet thereof are positioned relative to each other to effect a strip crown control or an edge drop control, while roll stands of a downstream stage of the mill adjacent to a strip outlet thereof are operated to axially shift the downstream stage work rolls cyclically to distribute roll wear and thermal crown in the axial direction thereof.

대표청구항 ▼

A rolling method by use of a tandem rolling mill having at least two roll stands one of which forms an upstream stage of the mill adjacent to a strip inlet thereof and the other roll stand forms a downstream stage of the mill adjacent to a strip outlet thereof, each of said roll stands including upp

A rolling method by use of a tandem rolling mill having at least two roll stands one of which forms an upstream stage of the mill adjacent to a strip inlet thereof and the other roll stand forms a downstream stage of the mill adjacent to a strip outlet thereof, each of said roll stands including upper and lower work rolls movable relative to each other, said rolling method comprising: operating the roll stand of said upstream stage in such a manner as to control one of the crown and edge drop of each strip to be rolled; and operating the roll stand of said downstream stage in such a manner as to reciprocally shift said downstream stage work rolls axially thereof regardless of the width of each strip to be rolled.