Numerical simulation and optimization of casting process for complex pump

2017 2nd International Seminar on Advances in Materials Science and Engineering

Liu, Xueqin^1 ; Dong, Anping^1 ; Wang, Donghong^1 ; Lu, Yanling^2 ; Zhu, Guoliang^1

Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, China^1

Shanghai Institute of Applied Physics, China Academy of Sciences, China^2

关键词: Casting parameters;    Complicated structures;    High pressure pumps;    Numerical simulation software;    Optimization scheme;    Simulation and optimization;    Solidification process;    Structure characteristic;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012134/pdf
DOI  :  10.1088/1757-899X/231/1/012134

来源: IOP

【 摘 要 】

The complex shape of the casting pump body has large complicated structure and uniform wall thickness, which easy give rise to casting defects. The numerical simulation software ProCAST is used to simulate the initial top gating process, after analysis of the material and structure characteristics of the high-pressure pump. The filling process was overall smooth, not there the water shortage phenomenon. But the circular shrinkage defects appear at the bottom of casting during solidification process. Then, the casting parameters were optimized and adding cold iron in the bottom. The shrinkage weight was reduced from 0.00167g to 0.0005g. The porosity volume was reduced from 1.39cm3to 0.41cm3. The optimization scheme is simulated and actual experimented. The defect has been significantly improved.