Mathematical model of the heat distribution process in a steel part during surface modification by the electro-spark alloying method

Problem. Electro-spark alloying (ESA) is a promising process of surface modification, which allows obtaining high-quality coating, environmentally safe and energy efficient. Wide application in production hindered by the need to develop technology, as well lack mathematical model for predicting properties coatings depending on materials processing modes. It known that high adhesive bond obtained ESA method with base explained both intensive mixing electrode liquid phase diffusion anode material into cathode solid phase. The goal describing heat propagation coating during electro-spark metal surface. Methology. direction technological thermal physics N.M. Rykalin widely known, it based theory conductivity sources. Regarding bodies, most universal Green's function Kelvin solution - fundamental conduction equation, describes temperature distribution an unbounded body, occurs after release finite amount form instantaneous point source. product was described using Laplace operator. taken account strengthened part depends thermophysical characteristics cathode, diameter electrode, speed movement electrode. Results. original developed. shown larger higher at coating-base interface, therefore better adhesion coating. optimal moving 0.5-1.5 m/s. Practical value. To obtain best base, necessary use largest 4.5 mm combination low