ZTA15钛合金薄壁壳体加工工艺试验研究

2020-10-27

作者：侯亚娟，董礼，王维暄，张彦明，赵桂庆单位：首都航天机械有限公司

摘要：钛合金的难加工性极大地制约了航空航天钛合金薄壁结构件的应用。通过分析钛合金材料特点及切削特性，选取合适的车削刀具提高刀具耐用度，采用设计合理工装改善了工艺系统刚性。利用正交试验法，对干式断续车削工况下ZTA15钛合金薄壁壳体的切削参数进行研究，分析了加工过程中切削速度、进给量和背吃刀量对刀具磨损及壳体变形的影响，并得到最优的切削参数。本研究结果为钛合金薄壁壳体的车削工艺优化奠定了基础，对提高钛合金薄壁结构件的制造水平具有重要意义。

关键词：ZTA15钛合金；薄壁壳体；干式断续车削；刀具磨损；切削参数

中图分类号：TG506.7；TH162文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.09.015

Experimental Study on Processing Technology of ZTA15 Titanium Alloy

Thinwalled Shell

Hou Yajuan，Dong Li，Wang Weixuan，Zhang Yanming，Zhao Guiqing

Abstract:The difficult processability greatly restricts the application of thinwalled structural parts of titanium alloy in the aerospace field.The characteristics of material and cutting of titanium alloy are analyzed，and the suitable turning tool is selected to improve the durability.The rigidity of process system is improved by designing reasonable tooling.The orthogonal cutting tests are conducted to study the cutting parameters of ZTA15 titanium alloy thinwalled shell under dry intermittent cutting conditions.The influences of the cutting speed，feed rate and backfeeding on deformation and tool wear are analyzed，the optimal cutting parameters are obtained.The experimental research laid the foundation for the optimization of the turning process of titanium alloy thinwalled shell，which is of great significance for improving the manufacturing level of titanium alloy thinwalled structural parts.

Keywords:ZTA15 titanium alloy；thinwalled shell；dry intermittent cutting conditions；tool wear；cutting parameter