(in lingua inglese)
The above two cases in this present article imposed that, roll is a critical component for the rolling mill and failure of roll occurred due to improper roll quality. In the first case, improper microstructure (inhomogeneous in nature) led to failure of roll during service. While, the second case the defect of the roll originated from the manufacturing process. It has been cleared from the article that the roll manufacturing plays a significant role in performance of roll.