The Ws <sub>, 2 </ Sub> Developed And Tribological Properties Of High Temperature Lithium Grease Study

The machinery equipments used in such rigorous conditions as high temperature, heavy loaded and high speed need efficacious lubricating grease ,good anti-high temperature and excellent extreme pressure property , So compound lubricating grease in the modern industry with its good generalization function, higher proportion between characteristic and price become the emphasis of research. It will not do for the use of lubricating grease without solid lubrication addictive under a special condition. The familiar high temperature solid lubrication addictive used for lubricating grease such as carbon, MoS2 and so on is often mixed with gangue. So it is very difficult to improve its purity and come to the requirement of the friction of machinery lubrication, we find in the research that WS2 which nature is familiar to carbon' s and MoS2' s. WS2 is non-existing in nature and it is very difficult to synthesize . So there are few researches about it domestic in the past. Therefore, it is very absolutely significant to take WS2 as a high temperature extreme pressure addictive of compound lubricating grease producing a new kind of lubricating grease and make the research of its tribological Characteristics1. We have researched that the lubricating mechanism of WS2 by the physical and chemical analysis and the microcosmic fabric analysis. And it is considered that the shorter the diameter of particle, the better for the complication enforcement of railway, thus, making the situation more stable and decreasing the energy consumption in the friction system.2. We adopt a new one step method producing technology, add many kinds of addictive and produce a kind of WS2 high temperature lubricating grease with high dripping dot, good stability and excellent extreme pressure . There is no decreasing temperature process. It saves energy compared with two step method, and the process time is shortened, the cost is lower. This product has passed the examinationof bureau of technique and supervise of hunan province.3. We put forward and discuss the lubricating mechanism of lubricating grease, that is WS2 transfer membrane and surface of metal. It claims that solid compound membrane including WS2, borate and surface of metal comes into being in the surface of fiction and than researches the elements that affect the tribological characteristics of WS2 high temperature lubricating grease.4. We analyze the situation of WS2 high temperature lubricating grease in the high temperature using the approach of heating analyze proving that WS2 powder is of good stability and lubricity under high temperature condition.