| 摘要 |
<p>PURPOSE:To improve the plate thickness accuracy by detecting a plate thickness after rolling and a tension in the upstream side, operating deviations in plate thickness and in tension, and correcting a roll gap and a feed speed based on those above deviations. CONSTITUTION:A plate thickness gage 24 such as an X-ray plate thickness gage is installed in the downstream side of a downstream stand 12 and a tension meter 30 is also installed between an upstream stand 10 and the stand 12. Furthermore, a speed controller 20 and a roll gap controller 22 are set on the stands 10 and 12, respectively. A roll gap deviation computing element 26 obtains roll gap deviations based on plate thickness deviations from the gage 24 and tension deviations from the meter 30 and inputs the deviations to a correction commander 32. Then, controller 22 controls a roll gap in order to bring roll gap deviations into zero. In this method, the plate thickness accuracy is remarkably improved because a roll gap and a feed speed are always maintained to a proper value.</p> |
