A CASE STUDY OF RAPID SAND CASTING DEFECTS

Abstract

Rapid sand casting is quickly transforming as an established method for the production of sand moulds and cores for metal casting applications by additive manufacturing processes. The case study investigated possible sand casting defects resulting from a local implementation of rapid sand casting referred to as Rapid Casting for Tooling (RCT). Poor workmanship of the RCT process chain was found to be the root cause of sand casting defects including cold lap, gas porosity and alignment faults.