Extending the Service Life of Hydraulic Units of Construction and Track Machines by Applying Liquid Crystal Additives

The article describes the influence of tribological characteristics phenanthrene liquid crystalline substance (as an additive to hydraulic oils) on service life units technological machines (e. g. construction and track machines). It demonstrates that creates cholesteric lubricating films friction surfaces. have a high bearing capacity low in their layers, which significantly improves lubricity oil. Preliminary tests four-ball machine demonstrated effectiveness this crystal additive, improvement anti-wear anti-seizure oils. was studied environment industrial oil И-30А GOST 20799, does not contain factory functional additives, oils Mobil Hydraulic 10w John Deere Hy-Gard, them. investigates wear rate some critical parts machines. efficiency these depends entirely reliability drive, axial-piston are its important part. Friction pairs out fastest. Therefore, course research, we simulated work “piston-casing” pair СМЦ-2 using roller made steel (38ХМЮА 4543-71) bronze block (БрАЖ9-4 18175-78). To prevent contaminants temperature factors results experiment used circulating system with thermostat. Initially, theoretical studies were conducted, showed possibility increasing piston pair. In experimental part concentration effect indicators model studied. For purpose dissolved (И-30А 20799) different concentrations. obtained lubricate samples machine. Laboratory normal resulted almost twofold extension parts. final study, compared data.