FEM-Assisted Design of a Multi-Hole Pocket Die to Extrude U-Shaped Aluminum Profiles with Different Wall Thicknesses
FEM-Assisted Design of a Multi-Hole Pocket Die to Extrude U-Shaped Aluminum Profiles with Different Wall Thicknesses
复制标题
DOI：
10.4028/www.scientific.net/kem.424.213
复制
发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
G. Fang;J. Zhou;Jurek Duczczyk
中科院分区：
文献类型：
--
作者：
G. Fang;J. Zhou;Jurek Duczczyk
在铝挤压过程中，从多孔模具同时退出的宽薄壁型材往往具有不同的速度并偏离直线。模具孔口前面的型腔通常用于平衡金属流动并均衡速度。实际上，只有在制造模具并完成试挤压运行之后，才能了解袋装模具设计对金属流动的影响。本研究旨在证明使用有限元模拟来预测金属流动的可行性，从而减少或有望消除试挤压运行。以通过多孔型腔挤压不同壁厚的U型型材为例，说明调节模腔调节金属流量的范围。评估了型腔形状对金属流动的影响。很明显，在模具设计最终确定之前，3D FEM 仿真确实可以有效地用于优化模具设计。
Wide, thin-wall profiles exiting simultaneously from a multi-hole die during aluminum extrusion tend to have different velocities and deflect from the straight line. The pockets in front of the die orifices are often used to balance the metal flow and equalize the velocities. In practice, the effect of a pocket die design on metal flow becomes known, only after the die is manufactured and a trial extrusion run is completed. The present research was intended to demonstrate the feasibility of using FEM simulation to predict metal flow, thereby reducing or hopefully eliminating trial extrusion runs. The extrusion of U-shaped profiles with different wall thicknesses through a multi-hole pocket was taken as an example to show the scope of adjusting the die pocket to regulate metal flow. The effect of pocket shape on metal flow was evaluated. It is clear that 3D FEM simulation can indeed be effectively used to optimize die design, before the die design is finalized.