钛合金锥形件挤压成形工艺及模具优化

Extrusion Forming Process and Die Optimizing for Titanium Alloy Taper

为了实现钛合金锥形挤压成形,设计了直接成形、两道次成形和复合成形工艺方案。通过DEFORM3D模拟软件分析,对比了成形载荷和生产效率,选择了最佳的挤压成形工艺。结果表明:采用直接成形,其成形最大载荷为11.5 MN;采用两道次成形工艺,成形载荷仅为4.25 MN,但两道工序完成工件成形,成形效率较低。采用复合成形工艺,成形载荷仅为直接成形的38.6%,且一道次成形,具有较高的生产效率。

In order to realize the forming of a titanium alloy taper, direct extrusion forming process, two-stage extrusion forming process and composite extrusion forming process were designed. The forming loads and production efficiency were contrasted by analysis of Deform finite element software. The best extrusion forming process was selected. The results show that： in the direct extrusion forming process, the maximum load is 11.5MN; in the two-stage extrusion forming process, the maximum load is only 4.25MN, but it has a poorer effectiveness for two-stage forming process;in the composite extrusion forming process, the maximum load is only 38.6% of direct forming process, and it has a higher effectiveness for one-stage forming process.