Effect of Rolling Speed on Electrical Damage of GCr15 Steel During Tribology with Current
Journal Title: 河南科技大学学报（自然科学版） - Year 2019, Vol 40, Issue 3
Abstract
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.
Authors and Affiliations
Yuming SUN, Chenfei SONG, Yixiang SUN, Bao SHANGGUAN, Yongzhen ZHANG
Keywords
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- EP ID EP469093
- DOI 10.15926/j.cnki.issn1672-6871.2019.03.002
- Views 68
- Downloads 0
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