SCIENCE BEHIND OF HIGH-TECH TRIBOTECHNOLOGIES DEVELOPMENT

High-tech tribotechnologies concept is outlined. Specific examples of the creation of various tribotechnologies are given. The technologies of final treatment of friction surfaces operating under low loads are described. They replace the process of running-in of these friction surfaces, and, consequently, increase the durability of their operation. Technological methods of cylinder liners plateau honing and flat-topped final polishing of bearing journals of sliding bearing shafts are given as an illustration.To increase the durability of bearing rollers, the tech has been developed for their final polishing with closed loop belts. Their width and tension force make it possible to ensure the barrel shape of such rollers, which guarantees an even distribution of pressure along the entire length of the roller. This prevents the possibility of their destruction at the edges unlike in cylindrical shapes.For voyage repair of railway tracks working surfaces a flow process has been developed that ensures the preservation of the rail transverse profile formed during the running-in process in various sections: rectilinear and curved. This tribotechnological process makes it possible to increase the productivity of railway track repairs and their service life greatly. Curved friction surfaces during operation, resulted from different speeds and pressures at different sites when running-in, have different rate of wear, i.e. their optimal crossing profile changes. The above is also true of railroad wheels. Therefore, to increase the durability of the rolling surface of railway wheels, tribotechnology of electromechanical pulse processing has been developed, which ensures uniform wear throughout the profile due to a regular change in the degree of hardening of the wheel profile surface layer.

tribotechnology, honing operation, running-in, rolling surface