The use of greases with ultrafine diamond-graphite powder to reduce a fatigue wear of rolling bearings

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Dokshanin, S.G.^1 ; Tynchenko, V.S.^1^2 ; Bukhtoyarov, V.V.^1^2

Siberian Federal University, Svobodny pr. 79, Krasnoyarsk

660041, Russia^1

Reshetnev Siberian State University of Science and Technology, Krasnoyarsky Rabochy Av. 31, Krasnoyarsk

660037, Russia^2

关键词: Friction torque;    Graphite powder;    Industrial lubricants;    Operating modes;    Plastic lubricants;    Rolling bearings;    Ultrafine Diamond;    Working temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/3/032057/pdf
DOI  :  10.1088/1757-899X/537/3/032057

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The present paper shows the results of studies on the use of the plastic lubricants with ultrafine diamond-graphite powder in rolling bearings. Even with a short-term tightening of the operating mode, it is possible to establish a friction boundary mode by squeezing the lubricant out of the rolling parts contact zone with the ring tracks, which leads to an increase in the friction torque and temperature. Reducing slippage, lowering the working temperature, limiting the friction torque can be achieved by improving the antiwear and anti-friction properties of the lubricants used. Tribological studies have established that the introduction of the ultrafine diamond-graphite powder into the composition of basic industrial lubricants significantly improves their performance. The introduction of ultrafine diamond-graphite powder into a lubricant reduces the amount of rolling bearings wear up to 1.6-1.8 times, reduces the amount of friction torque to 23-25%. The presence of a lubricant that can significantly reduce friction forces, reduces the amount of internal stresses and delays the fatigue cracks progress, which allows to increase the service life of rolling bearings by 1.5-2 times.