Hardfacing is a technique that consists of depositing a hard layer to resist abrasion, erosion, scaling, high temperatures, cavitation and wear. Hardfacing is therefore a way to increase the lifetime of certain pieces in an economical manner. Building-up, on the other hand, is an operation to restore the dimensional form to a work piece. The properties of the base metal chemical composition, melting point, coefficient of thermal expansion, microstructure, etc., influence the welding procedure. The main requirements that determine and limit the choice of the process are that it must minimize dilution while maintaining as high a deposition rate as … Continue reading HARDFACING COMPLETE