Transactions of Materials and Heat Treatment

Title：Design on extrusion mould for lightalloy parts with continuous variable cross-section

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ClassificationCode：TG376.2；TG376.8

year,vol(issue):pagenumber：2019,44(8):142-145

Abstract：

In order to manufacture light-alloy slender shape parts with continuous variable crosssection for the purpose of reducing product weight from both material and structure, the bottom orifice of extrusion mold was designed to be an assembly structure composed of a fixed die and a movable die. Then, the control mathematical model between the moving position control of the movable die and the moving displacement of the extrusion punch was established according to the volume constancy law in the process of metal extrusion. The position of movable die driven by an electro hydraulic servo system could be controlled in real time by using the displacement of extrusion punch as the input control signal, and the slender shape parts with continuous variable cross-section and complete metal fiber organization could be obtained by changing the size of orifice section in the extrusion die continuously. The results of extrusion experiment show that the contour shape of extruded parts with continuous variable crosssection is highly consistent with the shape of theoretical design.

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装发部预研（51318040310）

作者简介：唐全波（1963-），男，硕士，教授 E-mail：quanbotang@163.com

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