| 摘要 |
<p>PURPOSE:To remarkably improve a control ability of a rolling mill for a sheet thickness by using a tapered work roll in its axial diameter and by constituting to control the axial shifting quantity of said work roll. CONSTITUTION:A rolling material 4 is rolled by the rolling mill using the work rolls 2a, 2b tapered in the direction of roll axes 1a, 1b. The control of a quantity of roll gap G is performed by driving roll shift cylinders 5a, 5b connected with the roll shafts 1a, 1b to shift rolls 2a, 2b in the axial direction of the rolls. As to the sheet thickness of the rolling material 4, the quantity of roll shifting is corrected by sheet thickness control device 8 generating a signal to a control device 9 for a roll shift position, in order to make the deviation between the sheet thickness (hc) measured by a thickness gauge 6 on the center of outlet and a target sheet thickness hcREF at the center into zero. In this way, the control ability of the rolling mill for the sheet thickness is remarkably improved.</p> |
