R&D of indirect aluminum extrusion technology based on FEM

In terms of the features of indirect aluminum extrusion,an analysis is made concerning the trend of exit temperature of aluminum profile in the course of extrusion operation.The simulation has been carried out of the indirect extrusion process by means of FEM.As a result,the variety trend,at different extrusion speeds,of both indirect extrusion force and exit temperature of aluminum profile has been gained.On the basis of the above research,an isothermal extrusion is put forward,that is,the working stroke is divided into several different zones and the extrusion speed shall be decreased gradually in the period of extrusion.