Mathematical modelling of heating features of a cylindrical surface under plasma deposition

Mathematical model for temperature determination in a system 'coating – base' under plasma deposition of a powder material on the internal cylindrical surface has been developed. Mathematical model takes into account transformation of Gauss heat source, relative motion velocity of a plasmatron, and an angle of a plasma jet relative to the deposition surface. Effect of process variables of deposition on the process thermal stress and quality of plasma coatings has been analyzed. (paper)