Rezumat
The analysis for physical processes in different combinations of outer impacts on the material in mi- croplasmaspark alloying (MPA, MPA+UM, UM+MPA+UM) has been carried out in the current paper. The physi- cal models for microplasma electrode erosion and melted droplet cooling material of anode in the MPA process have been developed. As a result of numeric solution for tasks of heat conduction with powerful dot heat source for heat release and cooling without sources, it has been established that droplet cooling time for eroded anode is markedly less than other time parameters specifying alloying process. The task has been solved as to determination of optimum impulse duration values as well as optimum values of pause between electrospark charges providing maximal anode erosion velocity. Physical and mathematical model in the form of small vibration theory, the corre- sponding algorithm and software executed in Mathematica package have been developed for the interpretation of experimental data from the positions of physical mechanisms. The possibility for the solution of multifactor ( input parameters –voltampere and time specifications, output parameters –anode erosion velocity, hardened droplet frac- tion for eroded anode material)MPA +UM control joint process task for obtaining qualitative strengthened surface has been demonstrated with the optimization methodology use.