Multi-criteria analysis of the coatings quality obtained by cladding with a flexible tool

Abstract

In the article the technology of surface modification is considered on the basis of thermo-mechanical method by means of cladding with flexible (wire) tool. Here we propose a multi-criteria optimization technique to determine the characteristics of a flexible tool and processing modes by the criterion of the maximum possible adhesion of the coating applied to the workpiece surface. Mathematical dependences are presented for determining the base temperature of the product surface, which is created by friction of the tool pile; temperature in contact when cladding; the energy of mechanical activation; relative strength coefficient of the adhesion of particles as a result of the chemical reaction. The simulated data are obtained from the variation of the input parameters and the resulting output factors of the adhesion process: the ratio of the base temperature of the machined product surface to the contact temperature, the ratio of the mechanical activation energy to the total activation energy of the process and the value of the relative strength coefficient of the adhesion. The data obtained as a result of modeling were used to optimize the output factors of the adhesion process. Optimization technique was used, where grey relational analysis and fuzzy logic theory are combined.