摘要
利用宏观断口分析、力学性能测试、显微组织分析等对发生齿面剥落的客车主动螺旋锥齿轮进行了失效分析。分析表明,齿面非正常接触造成的齿顶附近接触压应力过大是导致齿面早期剥落的主要原因;晶界弱化、渗层偏薄等则使剥落过程加快、剥落程度加重。
Tooth surface peeling of the coach driving screw bevel gear was analyzed by means of macroscopic fracture observation,hardness test,microstructure examination.The result shows that the main reason of early peeling is the exceeding contact stress at the top of tooth caused by abnormal contact at the tooth surface.The weakened grain boundary and the thinner carburized layer aggravate the early peeling.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第2期115-118,共4页
Heat Treatment of Metals
关键词
非正常接触
齿面剥落
接触疲劳
垂直小断面
abnormal contact
tooth surface peeling
contact fatigue
vertical small breaking face
