Comparison between the vertical rigidity characteristics of roll systems for wide-strip cold rolling mills

Aimed at CVC and HC mill types which are widely used, finite element models of 4-high and 6-high mills were established through ANSYS9.0 software. The vertical rigidities of rolling force and bending force were analyzed under different working conditions of roll shifting and bending force by the model. It is revealed that the vertical rigidity of rolling force of the 4-high mill is larger than that of the 6-high in the same working condition. The axial shifting of the intermediate roll or work roll has a greater effect on the vertical rigidities of rolling force and bending force of the HC mill than the CVC mill.