Effects of Rolling Parameters on Work-roll Thermal Crown in Hot-strip Rolling

Abstract

The thermal crown variations of work-roll during hot-strip rolling are analyzed by a finite element model. To further study of thermal crown of workroll, the effects of different parameters are taken into account such as rolling speed, interval time of rolling and cooling water flow rate. Model results show that they have significant effects on the thermal crown of work-roll. In addition, it is concluded that the order of influence degree on the thermal crown of work-roll are the cooling water flow rate, the interval time and the rolling speed, respectively. In order to determine an accurate thermal crown within the workrolls, the three factors in the rolling process should be accurately calculated, especially the parameters of cooling water flow rate.