| 摘要 |
<p>PURPOSE:To center respective stands easily and quickly by inserting a dummy bar provided with reference outside diameter parts corresponding to the reference sizes of the roll calibers of the respective stands into the roll calibers, detecting the drawing-down forces of rolling rolls with each of the respective stands and adjusting the forces until the drawing-down forces are equalized. CONSTITUTION:The reference outside diameter parts 51-51n of the outside diameters D1-Dn corresponding to the reference sizes of respective roll calibers in the positions corresponding to the rolling rolls 14, 15 of stands S1-S8 are provided to a dummy bar 5. The bar 5 is inserted into the roll calibers 16 of the rolls 14, 15 and the respective parts 51-51n are mated with the roll calibers 16 of the stands S1-S8. In this state, the operator investigates whether the values detected with load cells 27, 28 for each of the stands S1-S8 coincide or not and if the values do not coincide, the operator adjusts the rolling reduction of chocks 12, 13. The operator releases the drawing-down of all the chocks 12, 13, pulls out the bar 5, draws down the chocks 12, 13 again down to the adjusted values of the cells 27, 28 and completes the centering.</p> |
