Abstract
The dissolution behavior of graphite added in the cast iron melt was studied and the influence of sulfur content on this behavior was discussed. A graphite piece floating on the surface of the melt becomes harder to dissolve as the sulfur content increases. There is greater erosion of the graphite bar inserted in the melt with increasing sulfur content and eroded graphites disperse into the melt as small lump-like particles. The dispersion of graphite begins with the cleavage of basal planes of graphite crystals. As this process advances, sulfur acts disperse coarse particles and disturbs their subdivision resulting in prolonging the life of the remaining graphite. This is due to the adsorption of sulfur on the prism plane of the graphite crystal which increases the bonding energy between each basal plane.
