某涡桨发动机减速器齿轮轴滚道剥落原因  

Reasons for spalling of a turboprop engine reducer gear shaft raceway

作　　者：王更杰 叶金祥 刘丽婷 唐梦兰 WANG Gengjie;YE Jingxiang;LIU Liting;TANG Menglan(AECC Zhongchuan Transmission Machinery Co.,Ltd.,Changsha 410200,China)

机构地区：[1]中国航发中传机械有限公司,长沙410200

出　　处：《理化检验（物理分册）》2023年第3期61-64,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：在工厂试车时,某涡桨发动机减速器齿轮轴滚道发生剥落。采用宏观观察、磁粉探伤、扫描电镜分析、磨削烧伤检查、金相检验和硬度测试等方法,分析了该齿轮轴滚道剥落的原因。结果表明:该齿轮轴滚道发生了接触疲劳剥落,滚道的工作表面存在磨削烧伤区域,使其接触疲劳强度降低,产生了疲劳裂纹,最终导致齿轮轴滚道发生剥落。During the factory test run,the raceway of a turboprop engine reducer gear shaft peeled off.The reasons for spalling of the gear shaft raceway were analyzed by means of macroscopic observation,magnetic particle testing,scanning electron microscope analysis,grinding burn inspection,metallographic examination and hardness test.The results show that the contact fatigue spalling occurred on the gear shaft raceway,and the grinding burn area existed on the working surface of the raceway,which reduced the contact fatigue strength and produced fatigue cracks,and finally led to the spalling of the gear shaft raceway.

关 键 词：齿轮轴滚道 剥落 接触疲劳 磨削烧伤 二次淬火层 

分 类 号：TB30[一般工业技术—材料科学与工程] V263.6[航空宇航科学与技术—航空宇航制造工程]