System Simulation Of Finishing Mill Process Of Hot Strip Continuous Rolling

Hot-rolling strip plays an important role in the development of domestic economy, and the products are widely used in industry, agriculture, national defense and civil areas. It is not only be used as slab and sheet, but also as raw and processed materials of cold rolling, weld tube, and cold banding beam. The hot rolling process is a very complicated metal plastic three dimension forming process. It is worth while to deeply research the process of the hot rolling.It is available to analyze the hot rolling process by using the traditional method and FEM method. Both methods are practically valuable for different circumstances, and reinforce each other. The model in theory of hot rolling process as big-deformation nonlinear thermodynamic coupling problem include both of temperature distribution model and rolling force model.In the paper, mathematical model has been set up, using Differential Element Method. This model system, together with deformation force model basing on Zhou Ji-hua formula, rolling mill temperature distribution, rolling mill force model and so on. Basing on mathematical model, visual simulation application has been set up by GUI of MATLAB. This simulation application have friendly interface, and modularization programming is interchange and expansibility.The simulation of the hot rolling is performed on DEFORM-3D that obtains the simulated result of rolling velocity and temperature strain rate, stain, rolling force. The results between the simulation by programming and the thermo-force EFM by 3-dimention DEFORM-3D are compare.Under same environment,the simulated temperature distributions, stain distribution and average rolling force of the micro-element method and the EFM are in good agreement with each other.