Voloshyna L. Higher wear resistance of an oil gear pump for tractor diesel engines

The thesis deals with the scientific problem of increasing wear resistance and efficiency of the components of an oil gear pump of internal combustion engines by means of an innovative multilayer coating ‎ forming technology in a single ‎cycle.‎ The theoretical and experimental research was used for the development of the coating application technology including the oxy-alloying of the components of an oil ‎gear pump of internal combustion engines in the ‎aqueous solution of aluminium-chromium-phosphate binder, which is aimed at ‎higher wear resistance and efficiency:‎ - determination of the rational parameters of the technology developed, in particular, heating temperature for the components, saturation environment concentration, and aging time in such environment;‎ - operational tests which have proved that the ‎application of the new coating technology for the oil ‎gear pump components provides the stable operation of the engine during inter-repair periods; and - the results of the operational tests have demonstrated that the wear resistance of the coated ‎parts almost 2.5 - 3 times as high as the wear resistance of the components treated according to the old technology.‎ The research describes the improved technological process of manufacturing the components of the oil gear pump of internal combustion engines with the application of the ‎developed innovative technology to increase the ‎wear resistance of the friction pairs of oil gear pumps and their ‎efficiency.‎