The Sensibility of Mold Dilation and Graphite Precipitation for the Simulated Porosity in Ductile Cast Iron

Abstract:

The formation of porosity in 40mmx200mmx100mm ductile cast iron test block under different conditions of mold dilation and graphite precipitation has been investigated based on The formation of porosity in 40mmx200mmx100mm ductile cast iron test block under different conditions of mold dilation and graphite precipitation has been investigated based on MAGMA software. The simulation results show that the variations of graphite precipitation have evident influence on the formation of porosity, while the variations of mold dilation have little influence on the formation of porosity in ductile cast iron. Because the graphite precipitation is a sensible factor for the formation of porosity, its exact value should be determined based on the metallographic analysis, the simulation results were in good agreement with the experimental results. Because the mold dilation is an insensible factor for the formation of porosity, it is commonly considered to be stable; however, the simulation result falls short of the experimental results when the mold is weak green sand.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 1455-1459
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.1455
• Online since: November 2012
• Authors: Yu Yun, Hu Jing, Xiao Ping Li
• Keywords: Ductile Cast Iron, MAGMA Parameter, Sensibility, Simulation

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