SPHEROIDAL GRAPHITE (SG) CAST IRON ROLLS

Spheroidal graphite cast iron rolls also called as nodular cast iron or ductile cast iron. Spheroidal graphite (S.G.) cast iron is a high strength cast iron. S.G. cast iron is produced by adding magnesium and / or cerium to the molten cast iron while it is being produced in foundry. Nodular / S.G. iron is a carbon-rich iron alloy. As S.G. iron contains high carbon content, the graphite is found as particles on the microstructure level embedded into metallic matrix. The term 'nodular' refers to the shape of the graphite particles which is achieved by adding magnesium / cerium. This is unlike the flakes like graphite structure of white or gray iron, and influences the properties of S.G. iron. Due to its mechanical properties nodular cast iron is also known as ductile cast iron.