| 摘要 |
<p>PURPOSE:To stabilize the shape of a rolling material by adjusting the rolling load of a four high mill according to rolling speeds and adjusting the roll crown of the rolling according to the adjusted rolling load. CONSTITUTION:The four high mill 1 consists of a pair of backup rolls 10 and a pair of work rolls. The rolling speed is detected by a tachometer 21 and the rolling load corresponding to the detected speed is determined by a control device to control a screw-down device 11. The rolling load in this stage is detected by a load meter 12 and work roll benders 13, 22 are controlled by the roll crown control signal from the control device 2. The roll crown corresponding to the rolling load is thus controlled. The actual shape of the rolling material is detected by a shape detector 3 and the roll crown is finally controlled. The shape of the rolling material is stabilized by the above-mentioned method, by which the unstable part is eliminated and the yield is improved.</p> |
