Abstract
It was examined the possibility of plasma-spraying of carbides and oxides of different materials on periclase (magnesite) molds. It was carried out arc plasma spraying of power mixture TiO2 и Al2O3 with mathematical models of coating process to get plasma coating, containing Ti – Al phases, capable to disable migration of oxygen and active metals to the surface of casting molds. It was carried out numerical modelling of plasma jet dynamics of plasma generator «Termoplasma 50-01». It was provided the calculation of temperature distribution in plasma jet for different working time moments of plasma generator. Model predictions will improve significantly the possibility to expect plasma coating processes of functional coatings by plasma generator of direct current «Termoplasma 50-01» and let to improve economic effect from implementation of plasma technology in industrial production. Based on the completed work, recommendations were developed for reducing the layer of increased hardness on titanium castings.
Keywords:
gas-thermal coating, electro-magnetic formula, plasma forming gas, inter electrode space, gas suspension, electrostatic field electrostatic field