Aim\ To study influence of various factors upon the metal flowing of two ring part plastic forming. Methods\ Numerical simulation has been done for the part by the software of MARC/Autoforge. Results\ The influence of billet shape
friction factor
deformation degree and radius of rounded corner on the plastic forming of two ring part has been determined. Conclusion\ The results of numerical simulation can provide a scientific basis for the mapping out technological process and the optimizing of die construction of two ring part plastic forming.