| 摘要 |
<p>PURPOSE:To smoothly execute thickness change while possing through without necessitating a complicated control logic by supplying the volume of rolling oil corresponding to the variation of the objective thickness before and after the change of work rolls while passing through. CONSTITUTION:The relationship between the volume of rolling oil and the rate of decrease of rolling load and relationship between thickness and rolling load are determined and stored in a host computer 10 and also the volume of rolling oil is calculated from the thickness changing allowance at the time of thickness change while passing through and the command of oil volume is outputted to an oil-pressure controller 9. Rolling load signal from a load cell 4 is inputted, a pump 8 for changing the volume of oil is controlled with the oil-pressure controller 9 and also directions for supplying a prescribed volume of oil to the work rolls 2 by opening or closing a valve 7 for stopping rolling oil injection is outputted. In this way, thickness change is smoothly executed while passing through.</p> |
