Analysis and improvement of axial movement of main drive system of four high rolling mill

By analyzing the axial movement of the main drive system of R2 mill, it was determined that the reasons for the axial movement of the top and bottom roll system of the rolling mill were the change of the horizontal length of the universal joint and the axial force produced by the cross of the rolls during the roll gap adjustment. By adopting measures such as improving the damping effect of the axial damping thrust device of the main motor to reduce the critical friction between the flat head sleeve and the flat head, and adjusting the cross-state of the lower roll system to reduce the axial force between the rolls, the problem of axial movement of the main drive system of R2 mill was effectively solved, and the occurrence of major equipment accidents was avoided.