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描述平整机组在冷轧连续退火生产线的应用,深入分析平整机延伸率的采样方法及控制原理。针对带钢厚度对延伸率的影响提出延伸率闭环控制的3种调节方法:轧制力调节模式、张力调节模式以及轧制力+张力调节模式。针对带钢速度对延伸率控制的影响提出积分环节采用变积分增益或积分时间的方法,保证了控制系统的稳定性与快速性。本延伸率控制方法在冷轧连续退火生产线平整机中得到应用,效果良好。
Describe the application of the flattening unit in the cold rolling continuous annealing production line, in-depth analysis of the sampling method and control principle of the flattening machine elongation. According to the influence of strip thickness on the elongation, three adjustment methods of elongation closed-loop control are proposed: rolling force adjustment mode, tension adjustment mode and rolling force + tension adjustment mode. Aiming at the influence of strip speed on the elongation control, the method of using variable integral gain or integral time is put forward to ensure the stability and rapidity of the control system. The method of controlling the elongation is applied in the cold rolling continuous annealing line leveling machine and the effect is good.