Abstract
AbstractThe new extrusion process combines the conventional methods of direct and indirect aluminum hot extrusion by an innovative container and die setup with a moving or stationary valve. The process enables the continuous extrusion of aluminum profiles without any interruptions. With both variants, moving or stationary valves, the usual dead cycle times can be used for a continuous extrusion process. Furthermore, due to the continuous material flow, a stationary profile exit temperature can be achieved, which leads to constant material properties. As of now, a continuous extrusion press for aluminum is not available. The new process concept is analyzed on the basis of scaled experimental models using the model material plasticine and numerical simulations. The similarity of the model material was validated by aluminum extrusion experiments. Various model material colors were investigated, and the resulting material flow and process forces of the new process were analyzed.KeywordsHot extrusionPhysical process modelingExtrusion press
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