The RSF Technology for Semi-Solid Casting Processes

Abstract

Rapid Slurry Forming (RSF) is a new process for manufacturing of cast components. The process is based on enthalpy exchange between at least two alloy systems having different enthalpies. The aim is to get semi-solid slurry. Experimental work has been done on Al-7Si alloy to get semi-solid slurry. The beauty of the process is that the state of slurry is controlled by relative added amounts of the alloy system used. It is not necessary to accurately control the heat flux to surrounding media such as crucible or mould. Globular microstructure of primary aluminum dendrites could thus be achieved by RSF process which ensure improved foundry characteristics. The results indicate that the RSF process is suitable for producing high quality metal slurries economically which may be a break through for semi – solid casting processes.