可变环境条件下钛合金旋转摩擦着火试验研究

Experimental investigation on titanium alloys rotating friction fire under variable environmental conditions

为研究航空发动机压气机钛合金构件发生钛火的形成机理和影响规律,围绕试验件设计、参数测试与状态调控等关键技术进行深入探索,完善了可变环境条件下的钛合金旋转摩擦试验方法,并在此基础上开展了试验件结构、材料与气流参数对钛合金燃烧特性影响的试验研究。试验结果表明:双环结构试验件具有较好的强度和刚度,能够满足钛合金摩擦试验要求;在试验工况范围内,TC4钛合金材料较Ti40材料更容易燃烧,且气流参数对钛合金燃烧特性的影响不明显。

In order to research the formation mechanism and influence law of aero-engine compressor titanium alloys of titanium fire,in-depth exploration around the key technology of test platform,the test specimen design,parameter measurement and state regulation was carried out.The rotating friction test method under variable environmental conditions was improved so to launch experimental study on the impact of titanium test article structure,material and air flow parameters on the characteristics of titanium alloy burning.The test results show that the double-ring structure test piece has good strength and rigidity that can meet the requirements of friction test of titanium alloy;in test condition range,TC4 titanium alloy material is much easier to burn than Ti40 material and the effect of air flow parameters on titanium alloy burning is not obvious.