Numerical Simulation Of 4# Angle Steel Roughing And Intermediate Rolling Deformation By FEM

The rolling of metal is a very complex elastoplastic and large deformation course. Because of its perplexing deformation mechanism, it's too hard to describe it with exact mathematics expressions. With the development of metal plastic forming technology, people pay more and more attention to analysis of deformation rule and mechanics. Finite element numerical simulation as one of the extensive applied technology, will play an important role on the product optimized design, cost reducing, the product development cycle shortening and forming defects forecast. Using finite element method to research the rolling course theory can not only save experiment cost, but also may study the problem which difficult to experiment as its high speed and dependability. With the development of computer and software technology, finite element numerical simulation has replaced the most rolling physical simulation successfully.In this paper, according to the technical reformation scheme which use 150 square billet to roll 4# angle steel designed by a plant technical department, three dimension elastoplastic finite element model of its roughing and intermediate rolling deformation was founded with the explicit dynamics software ANSYS/LS-DYNA. Successfully simulated the process from billet tapping to the front of finishing mill total 9 passes, clearly and directly observed the asymmetric deformation and distortion, obtained effective stress field, effective strain field and rolling force curve of each pass, and analyzed the rule of rolling deformation. Furthermore, verified the pass design, pointed out the problem of the pass during rolling. All of these had important practical significance on the process design optimization and technical reformation scheme improvement. Comparison of rolling force between the simulated values and the calculated values confirmed the reliability and practicality of the finite element simulation.