The Numerical Simulation Of Slab Edging-Rolling Process And Deformation Study

With the development of the industrial production,the fundamental strate- gy for the future survival of iron and steel enterprises is improving resource utilization efficiency, improving output coeficient of production and lowing production costs. With the application of continuous casting and rolling tech- nology, On-line-width-modulated technique which use edger has been widely applied.But, edger rolling caused by slab head and tail as well as the edge of the non-uniform deformation, causing a large number losses of cutting head, cut tail and trimming. With the hydraulic AGC device used successfully for edger mill, The short stroke control which use edger mill can effectively con- trol head tail cut lossesd and increasing product yields. Wherefore, offline sim- ulation of slab edgingrolling process using finite element numerical simulation technology, analysis of slab defor- mation characteristics, in order to provide a theoretical basis for sho- rt stroke control has important theoretical value and practical significance.In this paper, first introduce the basic theory of dynamic explicit elastic- plastic finite element. used finite element analysis software ANSYS/LS-DYNA to constructs a simulation model of slab edging- rolling process. In the model, the elastic deformation of work roll,the elasticplastic deformation of the strip are taken into account.The next simulation of edger rolling process, analysis of slab deformation characteristics of metal flow laws and the effect of side reduction, slab thick- ness, roller diameter on the dog-bone cross-sec- tion of the slab as well as the flat shape.Then simulation of rolling process, analysis oflaws of horizontal width of metal and deformation of slab head and tail, and the effect of side reduction, thickness reduction, slab thickness on the deforma- tion of slab width. Finally using the results of rolling process simulation and the theory of short stroke control, simulation of rolling process wich using short stroke control, and study of effect of short stroke control.