摘要
滑动载流摩擦中电弧的产生及烧蚀对摩擦副的寿命及可靠性具有重要影响。利用自行设计的点接触载流摩擦磨损试验机,研究了摩擦副的分离速度对电弧形态、电弧能量以及烧蚀表面的影响。研究结果表明:随着分离速度的增加,电弧被拉长的速度加快,电弧能量以及摩擦副表面的烧蚀程度降低。烧蚀表面的形貌可分为3个椭圆层:最外层为热影响区,中间层为喷溅产物沉积区,中心层为熔融区。热影响区和喷溅产物沉积区,在燃弧的不同时期对摩擦副的烧蚀程度也不同,起弧方向的烧蚀程度大于熄弧方向的烧蚀程度。
In the sliding current-carrying friction,the generation of arc and its erosion had important effects on the lifespan and reliability of the friction couples. The effects of breaking velocity of friction couples on arc morphology,arc energy and erosion surface were studied by using the self-designed point contact current friction wear testing machine. The results show that the arc is elongated faster with the increase of breaking velocity,while the arc energy and erosion degree of the friction surface is reduced. The morphology of erosion surface can be divided into three elliptic layers including the heat affected zone at the outermost layer,splash product deposit zone at the middle layer,and melting zone at the center layer. The heat affected zone and splash product deposit zone have different damage degree during the arc formation at different times. The degree of arc erosion in the arc-starting direction is superior to the arc-extinguishing directions.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2018年第4期1-5,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(U1730130
51375147)
河南省自然科学基金项目(162300410091)
关键词
分离速度
载流摩擦
电弧
电弧能量
烧蚀表面
breaking velocity
current-carrying friction
arc
arc energy
erosion surface
