| 摘要 |
<p>PURPOSE:To exactly and appropriately correct a rolling down position at a following stand by predicting the average temperature deviation of a material to be rolled at the following stand wherein the tip is not bitten in yet and the plate thickness deviation on the inlet side. CONSTITUTION:When the material 8 to be rolled is passed through a hot continuous finish rolling mill, the surface temperature of the material 8 to be rolled is detected before the tip of the material 8 to be rolled is bitten into a 1st stand. Using this temperature detected value and detected values of a rolling load deviation Pi and a rolling down deviation Si at each stand detected when the tip is bitten into each stand, a predicted value TjP of an average temperature deviation of the material to be rolled at the following stand wherein the tip is not bitten in yet and a predicted value Hi of the plate thickness deviation on the inlet side are predicted. A correction Si* of the rolling down position at the following stand is obtained by these predicted value to surely carry out the rolling down correction. Moreover, even when there are detective errors in the rolling load and rolling down position, they are kept under stable control and a desired plate thickness can be obtained surely from the tip of the coil.</p> |
