ALGORITHMS OF NEW METHODS FOR MATERIAL WEAR RESISTANCE ESTIMATION

Subject of Research. New methods and algorithms for testing and determination of material wear resistance are presented. Various friction pairs have been tested, which made it possible to determine the dependence of the wear resistance of various materials both on the friction unit operating modes and on their hardness. Method. To calculate the parameters of wear resistance, an improved method of artificial bases and chord method were applied. A digital microscope and pattern recognition program were used to determine the diameter of the hole (the main calculation indicator of the resultant drilling on the test material surface). Main Results. An improved method of artificial bases has been developed, which makes it possible to determine the wear of friction pairs and calculate the basic parameters of wear resistance using the developed algorithms. The use of various grades of material with different mechanical and physical properties made it possible to determine the operating time of each sample and enables the quantitative assessment of the wear resistance of each friction pair under research. With an increase in the hardness of the test material, the wear resistance increases as a result of mechanical hardening directly in the friction zone. Practical Relevance. The developed methods and algorithms for wear and wear resistance calculation can be widely used in wear determination and selection of the most wear-resistant friction pairs in such important components as plain bearings, cylinder bushings, pistons and engine crossheads, compressor units, and mechanical seals of pumps.