Ryzhkov Y. Improving of wearlessness and corrosive firmness of hydraulic drive details applying ionic plasma coverage

The Object of the research is materials and regularities of ion-plasma coatings implementation for the component parts of hydrostatic power drives. The aim of the research is to improve excessive ware and corrosion resistance of parts sliding of the component parts of hydrostatic power drives . To solve this task modern methods were used: Metallographic, X-ray, micro X-ray -spectral analysis, micro- and nano firmness calculation, obtained results processing using the methods of mathematical statistics, chemical methods, testing the excessive ware corrosion resistance. The benefits of 38Х2МUА steel as basic material were grounded, selected and experimentally proven in the study. Optimum conditions of heat treatment, which provide high wear and corrosion resistance compared with other constant are offered in the research paper as well. New scientific and technological basis of the plasma coating application which allows to receive coverage of different chemical and phase composition with the help of parameters varying of speed parts in a vacuum chamber, its distance from three cathodes, the angle between the three plasma sources. A new chemical composition of three component coating Ti-Cr-N is created. For the first time, the optimal coating thickness of plasma-6mkm is defined, the phase composition of plasma coating Ti-Cr-N: Ti2N, (TiCr) 2N is determined, which provides maximum durability and improved corrosion resistance. The scientific problem of improving the efficiency of steam glide through the choice of materials for manufacture parts of hydrostatic power drives and transmission surround modes of its heat treatment is scientifically solved in the presented thesis paper.The effectiveness of using ion-plasma method for coating details surfaces was scientificly based. A special three component coating is created, its impact on the structure formation and performance characteristics of hydraulic components is researched as well. Industrial implemantation of research work is carried out GE "Malyshev Plant", SCTB "Gidromodul" as well as in the education process of KHNADU (Kharkov National Automobile and Highway University).