Numerical analysis and defects of forging technology for synchronizing steel ring of automobile

With the high development of the motor industry, there is a great demand for precise and complex auto parts. New forging processes, material and energy saving processes are very important to the production of new type of auto parts. But forging mechanism is very complicated,and numerical simulation is the most effective method for analyzing the plastic deformation process. In this paper, several key techniques of synchronizer ring is simulated by Deform-3D, the effect of workpiece diameter, die structure and friction factor on forging quality and the flowing and strain stress distributing disciplinarian of metal material are particular analyzed. The defects occurred in the forging process is forecasted, eliminated forming disciplinarian and optimized process parameters and die structure through numerical simulation. The theory of precision forging, technology of FEM simulation and die CAD are integrated through this research, which helps to shorten developing period, prolong life-span of die, and cut down the cost, etc. The progeny of the research can provide accordance for other synchronizing ring production and die design and it also can be used for the leading production directly.