Jiabao Pan, Huaibiao Wu, Ao Wang, Qingwen Dai and Xiaolei Wang
This paper aims to investigate the influence of high-temperature thermal action on grease performance from the angle of film-forming performance.
Abstract
Purpose
This paper aims to investigate the influence of high-temperature thermal action on grease performance from the angle of film-forming performance.
Design/methodology/approach
A static thermal aging method was used to prepare high-temperature thermal grease samples after high-temperature thermal action. On the basis of optical interference technology, the film-forming characteristics of fresh grease samples and the grease samples after high-temperature thermal action under variable speed and fixed speed conditions were explored.
Findings
The decrease in the structural entanglement performance of the grease after short-term high-temperature thermal action makes its film-forming performance better. The mechanism is that the lubricating grease soap fiber entanglement is reduced. Although the continuous high-temperature thermal action can make the grease film-forming performance better, its mechanism is that the soap fiber structure caused by high-temperature thermal action is damaged and is easy to be cut off under the action of shear.
Originality/value
The effect of structural system change on its film formation performance was discussed in combination with the change in grease structure characteristics, and the mechanism of action was revealed.