| 摘要 |
<p>PURPOSE:To increase the capacity of shape controllability even at the time of a narrow sheet by increasing the amount of projection of rollers in the middle part in a back-up roll in which the rollers and saddles are alternately arranged in the axial direction of a roll shaft. CONSTITUTION:The back-up roll is constituted by arranging plural rollers 9 in the axial direction and also, by eccentrically arranging the axial centers of these plural rollers to the center of the rotation of the back-up roll, the shape of a material to be rolled is controlled by bending the axial center of the backup roll to the face of sheet of the material to be rolled. The respective rollers are arranged on the roll shaft so that the amt. of eccentricity of each roller 9 to the center of the rotation of the back-up roll is independently variable of other rollers of which the same back-up roll is constituted. In this way, even in the case of the narrow material to be rolled, the large variation of roll gap can be imparted between the edges and the middle of sheet and the capacity of shape controllability can be increased.</p> |
