The Influence of Blank-Width Ratio on Stress Field during Heavy Axial Forgings Manufacturing with Horizontal V-Shaped Anvils

摘要

The forging method with horizontal V-shaped anvils (HVA) is effective in the control of inner stress states, metal tissue, etc. FEM numerical simulation is conducted for the HVA forging method, given the blank-width ratio 0.5, 1.0 and 1.2, respectively, and the anvil-width ratio 1.0, to investigate the influence of blank-width ratio of HVAs on the stress field in the stretched forgings. The results show that during HVA forging, blank-width ratio and reduction ratio influences much upon the transversal and axial stress state in the middle part of forgings, while little at their ends. When the reduction ratio is 5% or 10%, it is possible to obtain axial and transversal tensile stress. When the reduction ratio is larger than 15%, it is easy to obtain two-way compressive stress. Therefore, in order to control the two-way tensile stress, big reduction ratio should be adopted. The results provide the theoretical foundation for the application of the said forging method.