Numerical Simulation Optimization Research of Cold Extrusion Forming for Injection Head

Abstract

In order to obtain high-quality injection head, cold extrusion forming is adopted. Based on the study of forming technology for the injection head, reasonable process flow, cold extrusion pre-treatment process and boundary conditions are designed. Two finite element models in forward extrusion and backward extrusion forming ways are established. Taking DEFORM as the platform, the numerical simulation of forming process is carried out. Through simulation, the distribution of strain field, stress field and velocity field in the process of cold extrusion forming is preliminarily forecast, the merits and defects of two kinds of forming processes and the force state of mold are compared , the optimal forming scheme is determined.

The Optimization Design Study of Warm Extrusion Forming Technology for Piston Head Semi-Processed

“…; Followed by the axial load, is to determine the main parameters of molding equipment, is the main basis of selection of hydraulic press tonnage; The third is the maximum radial load, determines the structure of die, the material selection and heat treatment process procedures, etc. ; Equivalent stress can clearly show the whole change of the stress distribution in the model, so as to quickly determine the most dangerous area in the model, but it's influence on the simulation is the smallest, so as a last consideration [5][6] Evaluating all of index signs extrusion end temperature T e , axial load F a , radial load F r and equivalent stress σ e are the smaller the better, consequently get each index sign of the superior project combine for:…”