Gating System Design of Investment Casting for SUS316 Spray Nozzle

Abstract

Abstract Spray nozzles operate in harsh conditions with heat, corrosive substances, and high liquid pressure, which can easily cause corrosion and cavitation in the nozzle structure and threaten the safety of users. To reduce defects occurring during the casting process of spray nozzle and increase their service life, this study applied mold flow analysis to the casting process of a SUS316 stainless steel spray nozzle. We improved the configuration of the gating system, added water-cooling to the improved scheme, and examined the resulting filling and solidification conditions of the molten metal in the mold cavity. We employed the Niyama criterion to predict the probabilities of shrinkage defect formation in the spray nozzle and improve defect formation, thereby effectively lengthening the service life of the spray nozzle and increasing product quality.