| 摘要 |
<p>PURPOSE:To enable stable rolling from the tip of strip by surely preventing the generation of upset in speed balance at the time of passing the tip through the stands of the poststage in a method for passing the tip of strip in a continuous hot rolling mill which is continuously provided with plural rolling stands and also composed by respectively having loopers between rolling stands. CONSTITUTION:Based on the transition of a looper angle that is detected at the time of starting up a looper 3 on the outlet side of the rolling stand 1-1 of the preceding stage, the loop and tension states between the rolling stands 1-1, 1-2 are evaluated, based on the evaluation result and deviation between an actual load that is detected at the time of biting at two preceding rolling stands 1-1, 1-2 and the extrapolated load, the factor of upset in speed balance is estimated and the rotational speed and gap of roll at a rolling stand 1-n of the poststage are corrected before biting at the rolling stand 1-n of the poststage.</p> |
