By using influential function method and computational formulas that are given, the roll deformation in some 1850 rolling mill is analyzed, and the results are used to predict the transverse thickness difference of plate.

To investigate the influence of the direct contact between work roll surfaces outside workpiece width on thin strip cold rolling process,a simulation model was developed by means of influence function,with which the production data during rolling were taken to calculate the roll deformation on a four-high mill.

The roll system deformation is the important.

The PC mill rolls were modeled with 3 dimensional FEM software(ANSYS),and rolls deflection and the contact pressure between work/backup rolls of the rolling mill under different rolling conditions were analyzed.

Based on simulation,the influence of rolling force on rolls system bend deformation and the rolls system bend deformation along the width of strip are determined,and the bend deformation in different directions of work roll is analyzed.