A RESEARCH ON THE CALCULATION OF GRAPHITIZATION ABILITY OF GRAY CAST IRONS

In this research the relationship between graphitization ability and the carbon equivalent (CE %) of a cast iron have been investigated. The first series of moulds were cast at CE of ۳.۲% and pouring temperature of ۱۳۵۰°C. The other moulds were cast at different CE% with varying Si content. The graphitization ability( c ) was calculated using the thermodynamics aspects of graphitization and CE%. The results showed that the graphitization ability increases with an increase in CE% and decrease with pouring temperature.