FE Simulation Analysis of the Folding Problem for the Forged Half Shaft Bushing
The loose tooling forging of half shaft bushing on the steam-air forging hammer is numerically simulated using FEM software DEFORM3D. It reappeared the producing process for the folding of half shaft bushing during hot forging. The stress and velocity distribution during forming is analyzed. The simulation results show that, unstable bending produce first, then under the function of mandrel, these two metal zones converge to folding. For solve that problem, using punch with a special convex and appropriate enlargement the punch radius, avoidance produce bending and effectively prevent forming folding during forming process of the half shaft bushing.