Patent ID: 7757531
Filing Date: 2010-07-20
Classification: B21B

Abstract:
1. Rolling stand for producing rolled strip ( 1 ), which consists of work rolls ( 10 , 11 , 15 , 16 ), which are supported on backup rolls ( 30 , 31 ) or on intermediate rolls ( 20 , 21 ) and backup rolls ( 30 , 31 ), wherein the work rolls ( 10 , 11 , 15 , 16 ) and/or the backup rolls ( 30 , 31 ) and/or the intermediate rolls ( 20 , 21 ) are axially shiftable relative to one another, wherein a barrel length (L) of each intermediate roll ( 20 , 21 ) in a six-high rolling stand or of each work roll ( 15 , 16 ) in a four-high rolling stand consists of a cylindrical roll barrel section (Z) and a convexly curved roll barrel section (R(x)), such that a transition point (A) from the cylindrical to the curved roll barrel section, calculated from the cylindrical end of the roll barrel, is selected in the range of L/2≦x<L, where x is a distance from a cylindrical end of the roll barrel, and the curved contour, which extends towards opposite ends of the two rolls ( 15 , 16 , 20 , 21 ) over a portion of the width of the rolling stock in the direction of the end of the barrel, is described by a mathematical polynomial R(x)=a o + . . . a n x n , where n≧5, where a is a constant.