Optimization of Precision Forging Process for Large Flange Cylinder Parts

This article uses Deform-3D finite element simulation software to simulate the precision forging of large flange cylinder parts, and studies the influence of cylindrical and concave billets on forming load and forming quality. Firstly, cylindrical billets are used for forming, and the effects of forging speed, billet temperature, mold temperature, friction factor, billet height to diameter ratio on forming load and forming quality are studied to obtain the optimal process parameters; Using the optimal process parameters to simulate the different concave curvature, concave position, and height to diameter ratio of concave billets; Finally, comparative analysis and optimization are carried out to improve the forming quality, reduce the forming load, and extend the life of the mold. The simulation results of die forging show that for cylindrical billets, when the forging speed is small, the height to diameter ratio of the billet is 0.5, and the friction factor is large, the mold cavity cannot be fully filled and the forging cannot be formed. When ensuring sufficient filling of forgings, the forming load shows a trend of first increasing and then decreasing with the increase of forging speed and friction factor; As the temperature of the billet increases, the forming load gradually decreases; As the height to diameter ratio of the billet increases, the forming load gradually decreases; The change in mold temperature does not have a significant impact on the forming load; Although the change of concave billet has a relatively small impact on the forming load, using concave billet is beneficial for extending the life of the mold and the overall forming quality is relatively good. Through numerical simulation and forging process optimization design, the optimal process parameter group effectively reduces the forming load by 20%, greatly prolongs the service life of the mold, improves the quality and performance of precision forging of large flange cylinder parts, and has certain guiding significance for the actual production of similar flange cylinder parts.