Medium carbon alloyed steel is statically cast & then series of special heat treatment cycles undertaken like dehydrogenation treatment, Homogenizing, Normalizing to improve the overall structural soundness, stress distribution uniformity & toughness. As the roll well conditioned with the above treatment it undergoes differential hardening process followed by mist quenching or compressed air quenching depending on the hardness requirement. The tempered roll exhibits a uniform bainitic microstructure at the shell & pearlitic structure at the core /neck .