Effect of process parameters on sheath forming of continuous extrusion sheathing of aluminum
(1. Engineering Research Center of Continuous Extrusion (Ministry of Education),
Dalian Jiaotong University, Dalian 116028, China;
2. Dalian Konform Technical Limited Company, Dalian 116100, China)
Dalian Jiaotong University, Dalian 116028, China;
2. Dalian Konform Technical Limited Company, Dalian 116100, China)
Abstract: The effect of flow passage length in the die cavity and extrusion wheel velocity on the shape of aluminum sheath during the continuous extrusion sheathing process was analyzed by using finite element methods based on software DEFORM 3D and experimentally validated. The results show that by increasing the flow passage length, the velocity of metal at the cross-section of sheath tends toward uniformity, the values of the bending angles of sheath gradually approach the ideal value of zero and the cross-section exhibits a better shape. The extrusion wheel velocity has negligible effects on the bending shape and cross-section of the sheath product when a long flow passage is used.
Key words: continuous extrusion sheathing; aluminum sheath; sheath forming; die design; extrusion wheel velocity; finite element