| 摘要 |
PURPOSE:To control accurately the shape of a rolling material by providing vertical bending to a large-diameter roll and horizontal bending to a small- diameter roll by offsetting the small roll to the rolling direction in upper and lower work rolls of different diameters. CONSTITUTION:A rolling material 6 is passed between an upper work roll 1 of small diameter and a lower work roll 2 of large diameter. The vertical bending of lower work roll 2 is performed by the extending actions of cylinders disposed between the roll chocks 8 of lower work roll 2 and the roll chocks 9 of an upper backup roll 3 or by cylinders 23 disposed between the roll chocks 8 and the roll chocks 10 of a lower backup roll 4. Further, the horizontal bending it performed, by offsetting the upper work roll 1 to the inlet side of rolling material 6 and adjusting sectionally a pressing force against a holding-down roll 12 by actuating a moving device 13 through a backup roll 14, and coverting the displacement by the pressing force into that of the vertical direction, and adjusting the bending of the horizontal direction of upper roll 2 sectionally at each part of the longitudinal direction. In this way, the shape of material 6 is well performed. |
