Trial Production and Shrinkage/Porosity Defect Analysis of High-nickel Ductile Iron Castings Based on Numerical Simulation
Author of the article:NING Linxiang;HUANGWeiming;CHEN Tao;ZHU Bowen;MAN Wensheng
Author's Workplace：Zhejiang Ouyeda Machinery Manufacturing Co.,Ltd.,Huzhou 314200,China;Zhejiang Beifang Machinery Manufacturing Co.,Ltd.,Jiaxing 314100,China;Wuhan Yunfeng Technology Co.,Ltd.,Wuhan 430000,China
Key Words：high-nickel ductile iron chemical composition porosity shrinkage numerical simulation
Abstract：
Due to the different graphitization expansion of high-nickel ductile iron with different components,different sizes of shrinkage cavity and porosity would be formed under the same casting process.Based on the physical parameter calculation module of YF CAE,Obtained the physical parameter database of high-nickel ductile iron under different proportioning projects.Then the estimation theory of porosity defects was proposed according to the shrinkage rate of molten metal in the cooling process,and the simulation results were compared and analyzed.The results showed that the porosity defects was mainly related to the density change of molten metal during cooling process,and the appropriate material ratio could be quickly obtained through casting numerical simulation.
