Numerical Simulation of Investment Casting of Rotor Disc Based on ProCAST

Author of the article:XIA Kun1 , XU Xiangyang2 , DUAN Shiwei1,2

Author's Workplace：1. School of Mechanical Engineering, Anhui University of Technology, Ma'anshan 243000, China; 2. Ma'anshan Hongli Precision Casting Machinery Co., Ltd., Ma'anshan 243000, China

Key Words：rotor disc; ProCAST; shrinkage porosity; orthogonal test; gating and feeding system

Abstract：According to the structural characteristics of the rotor disc, the casting process was analyzed. The Pro CAST s oftware was used to simulate the changing law of mold filling field and solidification field during the pouring process of two inner gates, two pouring runners and riser, and the locations of shrinkage cavity and porosity defects of the rotor disc were predicted. The results show that the top flange, bottom flange, ribs and fan blade of the rotor disk all have shrinkage and shrinkage holes. The gating system is further improved, and the simulation shows that the shrinkage and shrinkage holes are significantly reduced. After submitting the test, the optimal process parameters were obtained, the pouring temperature was 1 650 ℃ , the pouring speed was 309 mm/s, and the mold shell preheating temperature was 960 ℃ . The final simulation results show that the shrinkage porosity defects in the casting were completely eliminated.