Abstract: evolvement of plate in ifteen_roller combination leveler are studied in this paper using both analytic geometry and FEM . The results show that the bending deformation and curvature evolvement are different from those obtained by general leveler. The technologies of parallel leveling and tension leveling are adaptive to the roll system of combination leveler

which not only can improve leveling precision

but also can erase the influence of negative torque on leveling roll

thus improving the leveling strength capacity of leveling materials. Meanwhile

a new calculating method of leveling process was pointed out

whose results were basically consistent to those of experimental results.