| 摘要 |
<p>PURPOSE:To control the camber of flange by adjusting the temp. of flange of shapes in the final finish rolling of hot rolling in a specified temp. range to a set temp. that is determined in accordance with the kind and size of the shapes. CONSTITUTION:When the relationship between the finished temp. of flange and the camber of flange is preliminarily grasped, the finished temp. region of flange corresponding to the allowable camber of flange is determined and only the rolling conditions such as the flow rate of water are changed so that the actual temp. with a thermometer is in this range by controlling cooling devices 4 through a computing element 7 from a controller 8. In such a case, the finished temp. of flange is regulated in the range of + or -25 deg.C with respect to a set temp. In this way, without changing equipment such as rolls, the camber of flange of a product is suppressed in a prescribed range. Especially, when feedforward control with the water-cooling devices 4 is executed, the camber of flange in the longitudinal direction of an intermediate material is made definite.</p> |
