为评价航空发动机气路密封中封严涂层材料在极端工况下的可磨耗性能,自主研制了一套模拟涂层与转子部件之间摩擦磨损行为的高温超高速可磨耗试验装置.采用大功率交流电机经由增速设备驱动主轴和试验轮盘-叶片结构高速稳定运转;采用高精密XY双向进给平台带动涂层试样进行径向和轴向进给,实现与高速旋转叶片的碰磨;通过超音速火焰加热涂层试样模拟其高温工况;高速碰磨产生的碰磨力、冲击加速度、摩擦热分别通过三向测力仪、加速度传感器、红外测温仪进行测量,并由高速数据采集系统进行高频采集、存储和分析.试验装置可实现叶尖线速度20～450 m/s、径向和轴向进给速率2～2 000 μm/s、最高加热温度1 200℃的磨耗试验,试验过程稳定、结果可靠.
To evaluate the abradability of gas seal coating materials under extreme conditions,a high-temperature and highspeed abradable tester was developed,which can be used to simulate the high-speed rubbing behavior between seal coatings and rotating components in aero-engines.The simulated disk and blade were able to run stably at high speed connected with a shaft driven by an AC motor with high power and a gear increaser.The feeding movement of the coating sample in radial and axial directions was completed by a XY feeding platform with high precision to simulate the rubbing interaction with the highspeed rotating blade.The coating sample was heated by a supersonic flame to simulate the high temperature environment.Rubbing forces,impact acceleration and friction heat were measured using the multicomponent dynamometer,acceleration sensor and infrared thermometer and the data was collected and analyzed through a high-speed data acquisition system.Test results show that abrasion tests can be conducted stably using this tester with reliable results when the blade tip velocity varied from 20 to 450 m/s,incursion rate from 2 to 2 000 μm/s,and heating temperature from RT to 1 200 ℃.
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