Abstract
In this paper, the cold extrusion process of aluminum alloy with multi-ribs was studied. The target part is formed by one-step closed cold extrusion. It has the advantages of simple process and high material utilization. The effects of extrusion speed and die corner on forming force and contact stress between billet and die were analyzed. According to the simulation results under different conditions, the reasonable process parameters are selected to obtain the products with full shape and without obvious defects. It can provide an effective reference for the parameter design in the cold extrusion process of this kind of multi-ribs parts.
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