Tribotechnical coatings characteristics obtained by electron beam welding deposition

Abstract

The problem of the materials wear-resistance increase and as a sequence, the machines and mechanisms durability and reliability under conditions of intensive external action is solved by different methods. The method of electron beam welding deposition (EBWD) is differed from other ones not only by high adhesion strength of the coating and basis but also by the possibility to change purposefully the composition of facing coating. This allows one to design coatings satisfying any operating conditions. In the given paper tribotechnical properties of EBWD coatings fused with the production powders of different compositions were investigated. As the materials of investigations there were used industrial powders of the alloys based on iron (PG-US-25), nickel (PG-10N-01) as well as composite powders containing titanium carbide with high.-chromium cast iron (PG-US25+20% Fe+35% TiC diluted by iron, as well as carbide and titanium carbonitride with tool high-speed steel (R6M5+30% TiC, P66M5+30% TiCN). The present powders were fused onto the back of the steel with the thickness of 5 mm.