| 摘要 |
<p>PURPOSE:To obtain a titled device capable of rolling a strip excellent in sheet thickness and shape by compensatingly operating a shape control by a roll bending operation and a sheet thickness control, in a rolling mill, for preventing the mutual interference between said controls and controlling a strip tension to a fixed value. CONSTITUTION:In a rolling mill for rolling a strip 1 by rolling rolls 2, 3, the tension values detected by strip tension detectors 10, 10' provided to the inlet and outlet sides of the mill are outputted to an arithmetic device 11 to control a strip tension to a fixed value through a driving device 14, and are also outputted to a compensating arithmetic device 15. Further, an output of a rolling down force detector 4 is outputted to an arithmetic device 12 to control a rolling down force through a servovalve 7 and a rolling reduction cylinder 8, and is also outputted to a compensating arithmetic decide 15. Moreover, an output of a pressure detector 6 in a roll bender 5 is outputted to an arithmetic device 13 to control the bending quantity through a servovalve 7', and also is outputted to the device 15. The device 15 outputs a compensation value operated basing on three inputs to the arithmetic device 12 of draft position operating quantity and the arithmetic device 13 of bending pressure operating quantity to compensate the control quantity.</p> |
