减速机轴断裂失效  

Failure on Fracture of the Reducer Shaft

作　　者：夏明六[1] 韩成树 

机构地区：[1]安徽省特种设备检测院铜陵分院

出　　处：《中国特种设备安全》2012年第5期54-55,共2页China Special Equipment Safety

摘　　要：针对断裂减速机轴的微观组织、化学成分、力学性能、断口形貌进行了测试分析。结果表明,减速机轴未进行调质处理,是导致减速机轴发生疲劳断裂的主要原因。键槽底部直角过渡导致疲劳裂纹的产生,而键槽位置过于靠近轴颈台阶连接处促进了塑性失稳断裂过程。In this paper, the microstructure, chemical composition, mechanical properties and fracture morphology of fracture of reducer shaft were measured and analyzed. The reducer shaft was not prepared by quenching and tempering which directly lead to the fatigue fracture occurring. The right-angle transition at the bottom of the keyway caused the source of fatigue crack, and the keyway was too close to the shaft neck facilitating the unstable fracture process.

关 键 词：减速机轴 疲劳断裂 失效分析 

分 类 号：TG142.73[一般工业技术—材料科学与工程]