Wide Heavy Plate Leveler Roller Anamorphic Resecrch And Procedural Simulation Of Straightening

Straightening is the process of making the plate to bend under the straightening force of the rollers,occuring elastic-plastic deformation,to tend the plate to flat. Straightening machine is devided into pressure straightening machines and roller straightening machines,currently use the latter more.In heavy plate production line,straightening equipment is very important,it is whether or not advanced has a very significant impact on the quality of final plates.In the process of roller straightening,plate become deformed under the straightening force,in the same time,the rollers also deform,to change the roller gap,thereby affecting the quality of straightening. So studying the rollers deform in the process of straightening has important theoretical and practical significance for getting an accurate dates of the plates after straightening.In this paper, straightening technics and principles in leveling process of heavy plate leveler are systematically researched,and structure of9-rollers hydraulic reversible wide heavy plate leveler is analysised.By eatablishing the mathematical model of the straightening process, determin the amount of each roller intermesh, straightening force and torque,get the formula for calculating the bending force, and analysis the curvature trend of plate under the action of the bending.On the basis of structural analysis in the roller system, with influence function method, establish a force model on the roller,show the deformation of rollers along the longitudinal direction and formula of flattening, obtained the relationship between force and deformation.With calculating by program, obtain the roller deflection curve under straightening force,analysis the function of bending roll institution on the heavy plate leveler.In addition,by calculating obtain rollers deflection trend under the different plate width and straightening force,provide the basis for the simulation of straightening process.Finally,this article analysis the process of straightening,with the deformation of rollers,obtain the roller gap shape during the process,analysis the relative total deformation curvature of the plate and the residual curvature of the plate after the correction.Analysis,to the plate with different original curvature,how to select the appropriate entry relative total deformation curvature.In order to get better straightening results, creat a new bending model, and obtain a better conclution of relative residual curvature along the width diraction of the plate.Analysis how the different set of roller effects the roughness,provide a theoretical basis to set the mount of bending.