A Finite Element Analysis on the Effect of Location of holes, Die pockets and Extrusion Speed in Multi-hole Extrusion Process

Extrusion process has proved its potential in bulk metal forming process since the industrial development. The better product quality, mechanical property and the strength of the extruded products are the advantages in extrusion process. Multi-hole extrusion is used where pressure required for extrusion is in excess of press capacity. It is used for the production of small and precise products such as parts used in automobiles, health-care and aviation industries. The different process parameters affect the extrusion process and quality of the extruded products. In the present investigation, finite element analysis is carried out to study the effect of loaction of holes on the die, die pockets and the extrusion speed on the extrusion load, efective strain and the extruded product length. Extrusion load is found to increase with increase in extrusion speed. The die pockets help in reducing the extrusion load. The effective strain, which provides the information about the work hardening of the material during the extrusion process is dependentof the above said process parameters. The extruded product lengths become more uniform when die pockets are made. The selection of process parameter is based upon the required quality of the product. (C) 2014 The Authors. Published by Elsevier Ltd.