摘要
针对轴承GCr15钢载流摩擦电损伤的问题,以61808型轴承为样品,研究了不同滚动转速下轴电流击穿行为和载流摩擦磨损特性。研究结果表明:随着轴承转速从100 r/min增加至800 r/min,轴承击穿电压从6. 6 V增加至7. 8 V,最终的系统电阻从3. 15Ω增加至10. 55Ω。轴承击穿后,GCr15钢表面形成电弧烧蚀坑和球状颗粒,并发生氧化反应,电弧影响区在滚动过程中被碾压成片状。而轴承单纯机械滚动和处于未击穿状态时,GCr15钢表面损伤以擦伤划痕和磨粒磨损为主。
To understand the electric damage of bearing GCr15 steel during tribology with current,the electrical breakdown behaviors and the electric/tribological characteristics of 61808 bearings were studied under different rolling speed. The results show that with the increase of rolling speed from 100 r/min to 800 r/min,the breakdown voltage increases from 6. 6 V to 7. 8 V and the system resistance after breakdown increases from3. 15 Ω to 10. 55 Ω. After breakdown,GCr15 steel is melted or spattered due to the high temperature of arc.Some erosion pits,bolls and oxides are produced. Arc-affected area are pressed into flakes during rolling. As contracts,only slight scratching and abrasive wear was found after rolling without current or before breakdown at the same rotating speed.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2019年第3期6-10,16,105,106,共8页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(51775173)
中国博士后科学基金项目(2016M590676)
关键词
载流摩擦
滚动
电弧烧蚀
击穿
tribology with current
rolling
arcing erosion
breakdown
