Optima® rolls are centrifugally cast, enabling a greater variation of alloys to be used in the working layer (shell) compared to a static cast roll. This casting process allows for a more sophisticated alloy to provide higher hardness with improved wear resistance while maintaining a stronger core for neck loads.
Centrifugal Cast Double Poured (CC duplex) bainitic / martensitic nodular iron rolls
|GRADE||OPTIMA® I||OPTIMA® II||OPTIMA® III|
|APPLICATION||Roughing, Intermediate, Finishing stands of Rod & Bar; Light Section mills*; Seamless mills*||Intermediate, Finishing stands of Rod & Bar; Light Section mills*; Seamless mills*||Finishing stands of Rod & Bar; Light Section mills*; Seamless mills*|
|C%||3.0 - 3.5|
|Si%||0.6 - 2.5|
|Mn%||0.3 - 1.5|
|Ni%||1 - 5|
|Cr% + Mo%||Up to 3.0|
*The hardness adjustment is obtained during a complex heat treatment process. For production, we need a range of 5 ShC which needs to be specified in the roll order.
Our technical team can help to determine the most suitable grade, degree of hardness and manufacturing method to meet with individual mill conditions and specifications.