| 摘要 |
<p>PURPOSE:To improve a dimensional accuracy by detecting the rolling load and no load roll gap and by controlling, etc. rolling reduction in order that the dimension in the direction of rolling reduction reach the target value in the set consisting of a vertical (V) and horizontal (H) stands of a line of rolling mills. CONSTITUTION:The gap of rolls is adjusted according to the rolling load and the change in the gap of no load rolls and the dimension in the rolling reduction direction of the material 5 to be rolled is controlled to the target value in the set consisting of adjoining V stands 1, 3 and H stands 2, 4 to a tandem rolling mills line for metallic rod materials. The target is also forecasted and corrected after the rolling reduction controlling at the previous stage according to the difference between the forecasted value of the dimension at the outlet side of the material 6 to be rolled which is at right angles with the rolling reduction at the stand of the outlet side and the target dimension. Said dimensional forecasting value is calculated based on the temp. of the sectional dimension of the material 5 to be rolled at the inlet side.</p> |
