锻压技术

航空发动机钛合金复杂型面零件的热拉深成形工艺

英文标题：Hot drawing process on complex profile parts of titanium alloy for aero-engine

分类号：TG306

出版年,卷(期):页码：2023,48(10):60-66

摘要：

针对航空发动机整流罩屏零件的结构特点和拉深减薄问题，对TC1钛合金进行高温成形性能实验，基于有限元仿真模拟软件PAMSTAMP，对TC1钛合金零件展开后的坯料进行计算并模拟热拉深成形过程，将优化的模拟结果用于实际生产。结果表明：采用PAMSTAMP仿真软件可以有效预测零件的拉深缺陷、优化钣金初始坯料和拉深成形工艺路线以及节约试制成本；在压边力为30 kN、拉深速度为3000 mm·s-1和摩擦因数为0.12的条件下，采用优化后的对坯料进行3次热成形的工艺方案，可以获得减薄尺寸满足要求的整流罩屏零件。

For the structural characteristics and the problem of deep drawing thinning for aero-engine fairing screen parts, the high temperature formability experiment of TC1 titanium alloy was carried out, the expanded blank of TC1 titanium alloy TC1 part was calculated,and the hot deep drawing process was simulated based on finite element simulation software PAMSTAMP. Then, the optimized simulation results were used for actual production. The research results show that the finite element simulation software PAMSTAMP can effectively predict the deep drawing defects of part, optimize the initial blank of sheet metal and the process route of deep drawing, save the trial production cost. Under the conditions of the blank holder force of 30 kN, the deep drawing speed of 3000 mm·s-1 and the friction coefficient of 0.12, the fairing screen parts with thinning size meeting the requirements can be obtained by adopting the optimized process scheme that the blank is thermoformed three times.

基金项目：

乔旭东（1999-），男，硕士研究生 E-mail：xdqiao@nuaa.edu.cn

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