| 摘要 |
<p>PURPOSE:To improve the sheet thickness control accuracy for a rolled stock by calculating a deformation amount and dividing the amount into a roll base and a housing base deformation amounts. CONSTITUTION:A deformation amount of a rolling mill for calculation of a gage sheet thickness is calculated and divided into a roll base and a housing base deformation amounts. That is, actually measured values such as a roll dia. and a sheet width are inputted to a data input part 31 and a roll base deformation amount is obtained by a roll base deformation amount calculation device 33 from a prescribed equation. A housing base deformation amount is obtained by a housing base deformation calculation device 32 by subtracting the roll base deformation amount at roll screwing time from a rolling mill deformation amount obtained from the elastic characteristic curve at roll screwing time. The control accuracy is improved because a roll opening controller 34 adds both the deformation amounts, calculates a roll opening, and controls the opening.</p> |
