航空活塞发动机机匣结合面磨损失效分析  

Wear Failure Analysis of Casing in the Reciprocating Aeroengine

作　　者：吴江[1] 常虎山[1] 李飞[1] WU Jiang;CHANG Hu-shan;LI Fei(Civil Aviation Flight University of China,Guanghan Sichuan 618307,China)

机构地区：[1]中国民用航空飞行学院,四川广汉618307

出　　处：《机械研究与应用》2021年第2期63-64,68,共3页Mechanical Research & Application

基　　金：四川省科技计划资助项目:莱康明航空活塞发动机机匣深度修理技术研究(编号:2018GZYZF0065)。

摘　　要：针对航空活塞发动机机匣结合面上出现微小坑孔的问题,通过对坑孔的三维轮廓分析、微观形貌分析以及纵切面纳米压痕测试,结合机匣所承受的载荷以及结构特点分析,确定产生坑孔的原因是结合面间的往复移动形成微动磨损。为防止或减缓微动磨损,提出了预防措施,可减少机匣渗漏滑油故障,延长机匣使用寿命。In terms of the questions that tiny pit holes have been found at the mating surfaces of the aviation piston engines,and in combination with the analysis of crankcase load tolerance and structural feature,it could be concluded through the 3D-profile and micro-morphology analysis as well as the longitudinal section nanoindentation test of the dents that the cause of the pit holes is the fretting wear caused by the reciprocating movement between the mating surfaces.To avoid or to slow down the fretting wear,some precautionary measures have been put forward in this paper so as to reduce the leakage oil fault and prolong the service life of the casing.

关 键 词：机匣 微小坑孔 微动磨损 失效分析 

分 类 号：TH117.1[机械工程—机械设计及理论] V234.2[航空宇航科学与技术—航空宇航推进理论与工程]