| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of break in a stepped part in thickness of a plate metal just under a stand at the time of restarting a line after stopping it. SOLUTION: The opitimal amount hn B of slightly thicker rolling to a present set value hnref of thickness in a thickness set value outputting means 2 is always calculated with a slightly thicker rolling set value outputting means 10. When a line stop command is issued, first, a gate 11 is turned on and, further, the gate 12 is turned on at a timing calculated by a program using a velocity function. The deviationΔhn between the set value hn Bref of thickness including slightly thicher rolling and the detected value hn FB of thickness is inputted to a proportional/integral controlling means 4 and the amountΔVn-1 of speed correction is outputted to a mill driving device 6 with the proportional/integral controlling means 4.</p> |
