| 摘要 |
<p>PURPOSE:To control the shape of a rolling material and to prevent the stepped wear of a roll by shifting the rolls of a mill in their axial directions and properly using the rolls of plural types, having each a different extended barrel-length, in accordance with rolling conditions to perform a rolling operation. CONSTITUTION:In a rolling mill whose work rolls 5 are made shiftable in their axial directions; rolling is performed by providing an extended barrel 4 to only one side of each roll 5 or by making the extended barrel 4 provided to one side of each roll 5 longer than that of another roll 5 and shifting both rolls 5, 5 mutually reversely in their axial directions, when a control is concentrated upon an edge-drop control. In this way, the edge-drop control is effectively pefomred even when the width of a rolling material 6 is small. Further, when the rolling is concentrated upon a meandering control; each of the work rolls 5, 5 is provided with the extended barrels 4 having almost the same lengths lb1, lb2 at its both sides, and the meandering control is stably perfomed by using said rolls 5, 5 in rolling. In this way, a rolling corresponding to the rolling conditions and the sheet width is well peformed by properly using the rolls of plural types.</p> |
