ABSTRACT
This paper is focused on examining the parametric effects on backward cup extrusion of aluminum billet. Four parameters including Temperature, Punch displacement, Billet radius and Time were considered in the course of the study. It was observed that the higher the percentage reduction in area, the higher the temperature increase during the extrusion process. The effect of an increasing billet length showed a corresponding increase in the extrusion pressure, whereas, the extrusion pressure increased asextrusion ratio increase. Extrusion speed varied directly with metal temperature and pressure developed within the container. However, the extrusion force depended on the flow stress of the billet material, extrusion ratio, friction condition between the billet and container, friction condition of the die material interface, initial billet temperature and the extrusion speed. Hence, this study becomes essential for the selection of the right parameters for optimal extrusion process of metals.
