Mechanical Behavior of Wedge Adjustment Bending Device of Cold Leveler

Roll bending plays an important role in elimination of non-uniform transverse internal stress and improvement quality of plate shape in leveling process. Taken the wedge adjustment bending device on a 11-roll cold leveler in a cross cut line as research object, in order to studying its bending characteristic, three-dimensional assembly model contained roll system, roller bending frame and upper beam has been built based on the finite element method. With the model, the necessity and function of the bending device has been verified. Different plate width, leveling force and roll bending value effects on working roll gap curve have been discussed. The result could serve as theoretical base for online set model and provide more precise parameters, accordingly maximize the potential ability of levelers.