TECHNOLOGIES AND EQUIPMENT DEVELOPMENT PROSPECTS FOR SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS (SHS)

Abstract

Purpose. The work is aimed at building an algorithm and coating processing on structural steel, its detailed control at each stage and analysis in obtained material physical and technical characteristics. Methodology. The research of the mechanism of obtaining coatings, as well as operational tests of the obtained samples, computer simulation and spectral analysis are offered. Findings. The kinetics of protective coatings formation on steel 50 has been studied. Вased on the obtained data, the conditions for obtaining the greatest coating thickness are predicted. The rational technology of obtaining alloyed chromium-alloy protective coatings on structural materials has been developed, which allows to use the spent charge as: ballast filler for SHS-charges, abrasive material for grinding, powder material for spraying. The study of the microstructure, phase composition of alloyed chromium-alloy protective coatings, their performance characteristics was carried out on the basis of the obtained material. The analysis of surfactant solutions (surfactants) use efficiency as lubricants in the course of SHS processes and development the forecast estimations system for efficiency use the surfactant solutions as lubricants in the course of SHS processes is carried out. Originality. On the basis of the conducted researches and the received results new alloyed chromium-alloyed protective coatings and compositions of powder charges for self-propagating high-temperature synthesis are developed. Practical value. The implementation of the developed recommendations will increase the service life by 2,7–3,2 times by increasing the wear resistance by 1,9–2,1 times. Сonclusions. Boron and titanium alloy chromium-analytical protective coating is obtained on the parts in order to increase their wear resistance. Low cost of a covering in comparison with known methods of reception of coverings in isothermal conditions is provided by insignificant prime cost of components of SHS-charge, and also increase in service life of technological equipment.