SIMPLIFIED PROCESS OF CARBON DEPOSITION IN LOW-ALLOY STEEL USING SHELL MOLDING

Abstract

Shell Molding is a casting process using sand coated with thermosetting resin, producing resistant, precise molds and parts with excellent surface finish and complex geometries, while reducing machining. In low-carbon steels, it provides high ductility and toughness, but limited hardness and wear resistance. To overcome this, graphite can be applied to the mold-metal interface, allowing carbon diffusion and a hardened surface layer. This integrates hardening into casting, enhancing wear resistance without reducing toughness, making parts suitable for gears, shafts and components under impact and abrasion.