| 摘要 |
<p>PURPOSE:To flat the shape of a rolling material uncoiled from a coil by incorporating a partial elongation generated at the time of rolling into a partial elongation caused by coiling, in a method of coiling a metallic sheet material after rolling it. CONSTITUTION:By the relation between the cross-sectional profiles P of a metallic sheet material 1a-1c and the coil diameters of coils 3a-3c to be coiled by a coiler 2, the shapes of a rolling material 4 at the time when each coil is uncoiled are shown by the figures. That is, when he profile whose central part in the width direction has the thickness larger (smaller) than that of the end part as shown by the figure 1a(1c), the central part (end part) of the uncoiled material 4 is partially elongated in the longitudinal direction as shown by S. And the partial elongation increases with the increase of the coil diameter R. Then in rolling the material 4 by a rolling mill; a target shape of rolling is set so that a part, not elongated even after it is uncoiled, is previously, partially elongated in its longitudinal direction, and the target shape is compared with the real shape of material 4 in order to control the amount of bending and/or the temperature distribution of a rolling roll in accordance with the comparison data.</p> |
