| 摘要 |
<p>PURPOSE:To improve working rate and to reduce a consumption unit by executing no meandering control before starting the descent of a looper between a meandering controlling stand and a front stand and starting meandering control at the same time when an automatic gage control in the meandering controlling stand is stopped at the time of starting the descent of the looper. CONSTITUTION:Before the looper between the meandering controlling stand and the front stand is lowered, an AGC (automatic gage control) of the meandering controlling stand is operated to prevent off-gage in the thickness of material as much as possible and meandering control is not used to prevent malfunction. After this looper is lowered, the AGC of the meandering controlling stand is stopped and meandering control is started. In this way, the meandering phenomenon before the tail end of material is passed through the front stand is entirely eliminated, drawing rate due to meandering that results in unscheduled roll changing is reduced in all kind of steel and all size and these contribute to the improvement of working rate and reduction of the consumption unit of roll.</p> |
