Technological aspects of creation of composite wear-resistant coatings on iron-containing alloys production with the help of induction welding

Abstract

To meet specific tribotechnical problems surface coatings require special properties, e. g. the formation of a friction film to increase wear resistance by implementing the principle of Sharpie. The paper deals with the technological aspects of creating such coatings on iron-containing alloys by combining laser and induction surfacing to obtain a wear-resistant composite coating. Within research, a coating with a composite structure on a substrate of steel 45 with a copper matrix and a reinforcing phase on the basis of Nickel-iron rollers obtained by laser cladding was obtained. The interface between the components of the composite material is studied. The results of studies of the chemical composition and microhardness of the composite coatings are presented. As studies have shown, the use of laser-induction surfacing allows to form a coating of stable quality with minimal consumption of matrix alloy. The proposed technology makes it possible to create a range of different types of composite coatings on iron-containing alloys for different friction velocities and degrees of load by varying the frequency of the reinforcing mesh and the tupe of filler powders.