Open AccessGating System Design of Investment Casting for SUS316 Spray Nozzle
Author(s) -
Pei-Hsing Huang,
Hung-Mao Lin,
Wei-Jen Wu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/644/1/012020
Subject(s) - nozzle , spray nozzle , materials science , investment casting , casting , cavitation , mold , service life , metallurgy , continuous casting , shrinkage , water cooling , mechanical engineering , composite material , mechanics , engineering , physics
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.