| 摘要 |
<p>PURPOSE:To make the bending force not to be the disturbance for the titled apparatus, by combining the roll gap controlling method depending on the left and the right roll gaps under the no-load condition and on the rolling load, with the method for operatively eliminating the load unbalance due to the bending force depending on the shift of the work roll and on the detecting signal for the bending force. CONSTITUTION:The arithmetic amplifiers 28-31 operate the thickness difference DELTAhw-d between the left and the right sides of the rolled material 27, and this difference is inputted to the draft controllers 12, 13, in the direction to make this difference zero. Hereby, the meandering motion is prvented, however, there is a problem that the bending force tends to be the disturbance for the meandering motion correcting and controlling apparatus and also tends to cause the meandering motion. Then, the detector 35 detects the work roll's position (e), and on the other hand, the detector 36 detects the bending pressure PF. These two signals are inputted to the arithmetic amplifier 37 which operates the formula, and inputs the result after adding it the minus sign to the arithmetic amplifier 28. In the formula, DELTAPw-d(b) is the load unbalance generated by the bending force between the left and the right load cells, Pw and Pd are the detected values by each of these load cells, F is the bending force per one chock, and (l) is the distance between the mill center and the backup roll chock.</p> |
