Selection of Optimal Hot Extrusion Process Parameters for AA6061-Fly Ash Composites

Abstract

The simulation of hot extrusion process is a challenging problem in process modeling because of very large deformations, strain rates and temperature changes during the process. The process development in industrial extrusion is to a maximum extent based on trial and error and often involves full size experiments. Numerical simulations can replace most of these experiments, which are often both time consuming and expensive. Hence in the present work, attempt has been made to simulate hot extrusion process. AA6061-flyash Metal Matrix Composite(MMC) as billet, H13 tool steel as the die, 400oC as billet temperature and extrusion ratio of 25:4 are used as simulation parameters. Simulation is performed using software DEFORM 3D by varying ram speed, Cone Half Angle (CHA) and friction coefficient with extrusion load. The effects of change of process parameters were observed and optimal process parameters were selected.