Abstract
The importance of extrusion die with multi-cavities in a die was introduced, and a new die structure with four cavities in a die for the frame in the screen window of Al-alloy was presented. The selection of the structure parameters for the die were described, including the selection of the machine, the arrangement of porthole and the die hole, the optimization of parameters, the design of the chamber and the bearing belt etc. The ways of optimizing these parameters were presented. The method of checking the die strength was introduced. It was shown by the results that the structure is effective and worth promoting, and the structure can greatly improve the production efficiency and reduce costs. The aim is to extend the technology and the structure, provide reliable and valid reference data for the designers.
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