Numerical simulation of casting process to assist in defects reduction in complex steel tidal power component

4th International Conference on Advances in Solidification Processes

材料科学;物理学

Guo, E.J.^1 ; Zhao, S.C.^1 ; Wang, L.P.^1 ; Wu, T.^1 ; Xin, B.P.^1 ; Tan, J.J.^1 ; Jia, H.L.^1

School of Materials Science and Engineering, Harbin University of Science and Technology, No.4 Linyuan Road, Xiangfang District, Harbin, Heilongjiang Province

150040, China^1

关键词: Casting designs;    Casting process;    Casting quality;    Formation mechanism;    Power components;    Shrinkage porosity;    Simulated results;    Solidification process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/117/1/012037/pdf
DOI  :  10.1088/1757-899X/117/1/012037

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to reduce defects and improve casting quality, ProCAST software is performed to study the solidification process of discharge bowl. Simulated results of original casting process show that the hot tearing is serious at the intersection of blades and outer or inner rings. The shrinkage porosity appears at the bottom of discharge bowl and the transition area of wall thickness. Based on the formation mechanisms of the defects, the structure of chills attached on the outer surface of discharge bowl casting is optimized. The thickness of chills ranges from 25mm to 35mm. The positions of chills corresponded to the outer surface of the T-shaped parts. Compared to the original casting design (without chills), the hot tearing and shrinkage porosity of the discharge bowl are greatly improved with addition of chills.