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 3.2% and pouring temperature of 1350°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.