THE USE OF THE ANTIFRICTION METHOD TO INCREASE THE DURABILITY OF MACHINE PARTS

Abstract

The paper presents the technological process of obtaining antifriction coatings by the FABO method. The technology is implemented in the conditions of repair production to increase the anti-wear properties of the contacting surfaces. The technological process consists in applying a thin copper-containing coating to the surface of a steel shaft due to the diffusion transfer of material from the surface of the filler material according to the principle of selective transfer. The coating process takes place in a technological environment consisting of a solution based on glycerol and 10% hydrochloric acid. The coating thickness ranges from 3-5 microns. The scuff resistance of the antifriction coating also exceeds the values of steel surfaces, in particular, the scuff resistance of a hardened surface made of 40X steel is 39 minutes at 350 N load and a friction velocity of 1.5 m/s, while the investigated antifriction coating has a setting time of 60 minutes. The excess of the scuff resistance is 35%. The research results are of high practical importance and can be used in conditions of restoration of precision couplings and friction units operating with low lubrication efficiency.