| 摘要 |
<p>PURPOSE: To assure flatness of a product by controlling thickness and tension by means of a roll gap and successive velocity in the last stand and simultaneously controlling a rolling load with the thickness changed for the stand immediately before the last stand. CONSTITUTION: A command quantity S1 for correcting reduction position and the correction quantity V1 of roll speed are calculated from the output of a tension detector TC4 on the entrance side of the last stand 5. A command quantity S2 for correcting reduction position and the correction quantity V2 of roll speed are calculated from a thickness detector X5 on the exit side of the last stand 5. The reduction position is corrected only for the sum of the command values S1, S2 by the reduction position controller HC5 of the last stand 5. The roll speed is corrected only for the sum of the correction quantity V1, V2 by the roll speed controller DM of all stands except the last stand 5. The thickness on the exit side of a stand 4 is corrected by a thickness controller HC4 of the stand 4 on the upstream side, by means of the command value (h) for correcting thickness on the entrance side that is calculated from the output of a tension detector TM4 on the entrance side of the last stand 5.</p> |
