| 摘要 |
<p>PURPOSE:To perform high-quality rolling by correcting the peripheral speed of rolling roll by the motor-speed setting system of the 1st rolling stand so that a tension obtained by a computing means coincides with a target tension. CONSTITUTION:Detection signals detected by load meters 15, 16, the rotating speeds of motors 8, 9 detected by speed detectors 10, 11, and the voltages and currents of motors 8, 9, are inputted to a processing unit 18. Further, a rolling torque is computed when the position-detecting signal of a material to be rolled detected by a position detector 17 is inputted to a gap processing unit 19. The rolling load, the rolling torque, and the thickness of material, which are obtained based on respective input signals when the material is rolled only by the 1st stand, are previously stored. Next, when the material is rolled by the 1st and 2nd stands, the correcting value for correcting the peripheral speed of rolling roll is computed based on the stored values and each input signal, to correct the speed reference value of motor 8 by using the computed value as the speed correcting quantity of the 1st stand. In this way, the tensionless state of a material to be rolled is obtained.</p> |
