Factor Planning of an Experiment for Estimating the Optimal Properties of Heat Protective Coatings on Details of a Cylinder-Piston Group of Diesel Engines

Abstract

A technology is proposed for creating heat-protective wear-resistant coatings on the sur-face of CPG parts made of AK12MMgN alloy using galvanoplasma modification of microarc oxidation. For this purpose, a complete three-factor experiment of type 23 was carried out in the form of semi-replicas of coating deposition. The dependences of the thickness, microhardness, wear resistance and porosity of the galvanoplasma coating on the technological parameters of the process have been established. This technology appears to be effective as it reduces fuel consumption by 5-7 % and increases engine power by 8 % while ensuring optimal properties of the heat-shielding layer.