INFLUENCE OF GEOMETRICAL PARAMETERS ON MATERIAL WELDING IN PORTHOLE DIE EXTRUSION: FE ANALYSIS

摘要

The importance of aluminum extruded profiles is increasing more and more in many industrial fields. The most complex profiles presenting hollow section are obtained using porthole die configurations. One of the most important phenomena taking place within this configuration is the material solid state welding that occurs when the flows reach the "welding chamber", located before the extrusion hole.