拉弯矫直机组张力及延伸率控制系统改进

摘要

The 2450 mm tension leveler used in Liuzhou Yinhai Aluminium Co., Ltd, when producing the soft alloy sheets which is closed to the machine capacity, will appear some problems like unstable of the machine tension control, low precision of the elongation control, long time to adjustment, etc. Through adding elongation tension control mode which used PI close-loop control for the torque limit of the front and back tension rolls according to the value of the difference between actual and setting elongation, it can eliminate the unstable tension control, shorten the time and increase the elongation precision to 0.01%.%针对2450 mm拉弯矫直机在生产抗拉强度接近设备设计极限能力的软合金薄料材时，出现机列张力控制不稳定，调整时间长及延伸率控制精度低等问题。通过增加延伸率张力控制模式，即根据实际延伸率与设定延伸率的偏差值来对前、后张力辊组的转矩限幅值进行PI闭环控制，消除了机列张力控制不稳定现象，缩短了调整时间并将延伸率精度提高至0.01%。