双锥薄壁铝合金件热挤压模拟分析

Simulation Analysis of Hot Extrusion of Thin-walled Aluminum Alloy Parts with Double-cone

用机械切削法制造铝合金双锥薄壁零件,材料浪费严重、生产效率低。本文采用热挤压对其成形。借助Deform-3D软件对挤压过程进行了数值模拟,分析了不同形状与尺寸的坯料对挤压载荷、等效应变分布的影响。利用模拟结果设计的模具与坯料进行了实际成形试验。结果表明,管状坯料为最佳的挤压坯料,热挤压可获得完好的铝合金双锥薄壁件。

When double-cone thin-walled aluminum alloy parts are manufactured by mechanical cutting, the material is seriousiy wasted and production efficiency is low.It is formed by hot extrusion.The extrusion process was simulated by means of Deform-3D software.The effects of different shapes and sizes of billets on the extrusion load and equivalent strain distribution were analyzed.Actual forming tests were carried out by using the die and billet designed based on simulation results.The results show that the tubular billet is the best extruded billet, and the perfect aluminum alloy double-cone thin-wall parts can be obtained by hot extrusion.