A UBET-Simulation Meant for Basic Understanding of the Extrusion of Aluminum Profiles

Abstract

A plane strain UBET-model, meant for deeper understanding of the material flow in the extrusion of complex shaped aluminum profiles is presented. In order to get the desired straight shape of the extrudate, every part of its cross-section must exit the die with the same velocity. One intention of the present work is to imitate this problem and to analyze it in a simplified way. This has been done by studying the extrusion through a two-hole die face. The flow is balanced by determining the optimum lengths of the bearing lands, i.e., those lengths which result in equal exit velocities of the extrudates. Furthermore, the material flow, as influenced by the position of the die openings along the die face, has been investigated.