Influence of filler material type and GMAW pad welding process parameters on the geometry and wear resistance of surfaced components

Abstract

Pad welding is one of the techniques used to extend the service life of components. Although this method has been applied for many years, there is still much to explore, as increasingly advanced filler materials are being developed. These materials require thorough investigation to find the best technological parameters process parameters that enable full utilization of their material properties. One of the most efficient and versatile hardfacing methods is gas metal arc welding (GMAW). In this study, the influence of GMAW process parameters on the geometry and quality of single beads deposited onto a base material was analyzed for three selected wear-resistant materials. Based on the conducted experiments, process parameters ensuring the highest bead quality were identified. The selected parameters were subsequently used to manufacture specimens for wear resistance testing. The paper highlights all factors affecting the service life of wear-resistant surfaces. The results indicate that not only the selection of appropriate wear-resistant materials is critical, but also the proper choice of technological process parameters and the hardfacing technique.