| 摘要 |
<p>PURPOSE:To secure the desired quality of a product by controlling rolling conditions basing on a couple acting on a pair of rolling rolls in the same direction as the advancing direction of a rolling material. CONSTITUTION:Pressures FU, FL acting on respective rolling rolls 2, 3 in the same direction as the advancing direction of a rolling material 6 are measured by preparing pressure gauges 4 between the roll chocks of respective rolls 2, 3 and a housing. The rolls 2, 3 are driven by motors 7, 9 which are controlled respectively by driving-force controlling devices 8, 10. A couple is produced when a different speeds rolling is started by biting the material 6 by the rolls 2, 3 and producing tensions at the front and rear sides of a mill. An arithmetic device 11 generates a control command of a different speeds rolling. The outputs FU, FL of the gauges 4 are inputted to the device 11, where a couple M is calculated a true rolling force is obtained from the couple M and a rolling down force, and the sheet thickness of material at the exit side by this rolling force is estimated, to control the rolling reduction or a speed ratio so that the estimated value coincides with a target value.</p> |
