In order to set roll gap with high accuracy and find a better curve for describing mill stretch, the mill stretch equation of Hot Strip Mill of Benxi Iron and Steel Co. has been analysed.

• 为了得到高精度的辊缝设定值，分析了某钢铁公司热连轧厂轧机弹性方程，找出更接近实际的轧机弹性曲线，以便在假定带钢塑性系数为常数的条件下，在线动态给出带钢穿带过程中轧机弹跳值修正量。