| 摘要 |
<p>PURPOSE:To control the width of a metallic sheet so that said width coincides with a target value and to improve the yield of said sheet by measuring or calculating the amt. of crown of the metallic sheet after rolling and controlling the width thereof in accordance with the measured or calculated amt. of crown and the change rate of the sheet width with respect to the preliminarily determined change of the amt. of crown. CONSTITUTION:A profile meter 5 is provided on the outlet side of a finishing mill 4. The meter 5 measures the difference in the thickness between the transverse end of the steel sheet after the finish rolling and the position of the prescribed size from said end and the transverse central part and applies the measured value to an arithmetic control unit 6. The arithmetic control unit 6, when inputted with the signal from the profile meter 5, reads out the thickness and width of the steel sheet intended to the rolled preset in a host computer and reads a coefft. K in accordance with the readout thickness and width. Said unit calculates the width change DELTAW in accordance with the coefft. K, the readout thickness and width, the measured value of the thickness difference which is the input signal, and the thickness difference which is the input signal, and the prescribed equation. The arithmetic control unit 6 controls the roll gap of vertical rolls 2 in order to eliminate the calculated DELTAW.</p> |
