Research on the Tribological Properties of Graphene-reinforced Extreme Pressure Lithium-based Grease for Engineering Machinery and Its Application
The selection and application of lubricating grease for construction machinery is of great significance to ensure its normal operation.The graphene grease developed in the paper meets the technical requirements of national standards and has good high temperature properties and tribological properties.When the graphene addition amount is(a+0.010)％,the graphene grease has the best anti-wear and friction-reducing effect,with a friction coefficient reduction rate of 18.5％and a wear spot diameter reduction rate of 15％.Through comparison of heavy-load sliding bearing bench tests,the aver-age wear of the sleeve and the pin when graphene grease is added is reduced by 30％and 65％respectively compared with when extreme pressure lithium-based grease is added.By comparing with the whole machine test,the average wear a-mount of the friction pair of graphene grease is reduced by 58.75％compared with that of extreme pressure lithium grease.Due to its stable friction coefficient and good tribological properties,graphene grease has solved the problem of crane jitter to a certain extent.However,the problem has not been solved completed;hence,it is recommended to simultaneously in-vestigate other factors that cause crane jitter.
construction machinerygraphene greasefriction and wearcrane jitter
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