Optimization of Surfacing Modes for a Wear-Resistant Alloy

Using optimization in the modernization of existing surfacing materials for various load conditions and surfacing technology is relevant and was considered in this paper. The technology was proposed, and the surfacing mode was calculated with the resulting flux-cored wire composition containing carbon, titanium, and yttrium. This made it possible to carry out the surfacing process with good stability of the arc process. An experimental study of the surfacing metal with a flux-cored wire of tubular construction showed that it had a martensitic-austenitic structure with inclusions of titanium and yttrium carbides and had high abrasion resistance. The average microhardness of the carbide phase was 11 GPa, and the martensitic phase was 7.5 GPa. The weld metal obtained during welding with flux-cored wire of the optimal composition for the calculated welding mode had a 1.6–1.7 times higher abrasion resistance than the metal welded with “Sormite-1” alloy. The developed flux-cored wire and surfacing technology was implemented at the Sumy region enterprises.