MAXIMA® rolls have been developed for mills which can benefit from improved performance compared to using OPTIMA® in intermediate stands or as an alternative in finishing stands which are not suited to using high performance ULTIMA®. These grades have been enhanced by the addition of micro alloy elements including Boron and Niobium as a finely precipitated, discrete aggregate set of carbides within the matrix.
Centrifugal Cast Double Poured (CC duplex) bainitic / martensitic nodular iron containing high hardness special MC carbides
|GRADE||MAXIMA® I||MAXIMA® II||MAXIMA® III||MAXIMA® IV||MAXIMA® V||MAXIMA® VI||MAXIMA® VII|
|APPLICATION||Intermediate Stands of Rod and Bar, Light Section Mills, Finishing Stands in Seamless Mills||Intermediate, Finishing stands of Rod and Bar, Light Section Mills, Finishing Stands in Seamless Mills (Rolls & Rings)||Flat Passes, Finishing of Rod and Bar, Light Section and Narrow Strip Mills (Rolls & Rings)||Finishing Flats, Rod and Bar, Light Section Mills||Finishing Flats, Rod and Bar, Light Section Mills||Rings for Intermediate and Finishing Stands of Universal and Heavy Section Millls||Sleeves for Finishing Stands of Universal and Heavy Section Mills (Beams)|
|C%||2.5 - 3.5|
|Ni%||1 - 5|
|Cr% + Mo% + W%||1 - 16|
|Ti% + V% + Nb%||Up to 0.5|
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.