| 摘要 |
<p>PURPOSE:To obtain a good shape from just after a start of rolling by setting a position of an intermediate roll based on a specific equation and setting a bending force of a work roll based on an optional constant. CONSTITUTION:A 6-high rolling mill is provided with backup rolls 4, 4', interme diate rolls 3, 3', and work rolls 2, 2' in symmetrical upper and lower positions, respectively. Positions of the rolls 3, 3' are set based on the equation of a1+a2B +DELTAN1+DELTAN2+DELTAN3 at presetting the positions of the rolls 3, 3' and a bending force of the rolls 2, 2'. The bending force of the rolls 2, 2' is set based on an optional constant. In the above equation, B: sheet width, DELTAN1: correction term for an error between actual and a preset values of a work roll bending force for the preceding coil, DELTAN2: correction term for variance of a thermal crown amount, DELTAN3: correction term for change of a target shape, and a1, a2: constant.</p> |
