| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To attain a uniform crown in the longitudinal direction of a steel sheet. <P>SOLUTION: A featured value is extracted from the amount of a crown which is detected from a setup means 102 for calculating the preset value of the bender by the setup calculation before the rolling of the steel sheet and a crown meter 171 and the top and rear ends of a bender is corrected in the direction in which the transient regions in the top and rear ends are minimized by calculation according to this value. Therefor, this device includes: a top and rear end correction specification adjusting means 104 for calculating the correction specification of the bender in the top and rear ends of the steel sheet which is applied to the next steel sheet; a top and rear end correcting means 105 for calculating the correction value of the bender during rolling of the steel sheet from the information of a calculated correction specification of the bender and the rolled region of the steel sheet and a manipulated variable calculating means 130 for calculating a bender command value from the preset value and the correction value of the bender and outputting it to the hot-rolling mill. Consequently, the region of stationary crown in the longitudinal direction of the steel sheet is maximized and the uniformity coefficient of the crown in the longitudinal direction is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
