Alloyed rollers are special steels alloyed with nickel, chromium & molybdenum. which is used in breakdown, roughing & intermediate mills for finishing of heavy sections. these rollers are statically cast and undergo a three stage high temperature heat treatment comprising of annealing, normalizing & tempering rotation. the rollers are available in a wide variety of composition & properties to suit specific application.
The matrix structure is pearlitic or bainitic depending on the alloy content. changing the carbide distribution obatined through control of chemical composition varies the hardness. finishing rollers for sheet, plate and strip mills. intermediate and finishing rollers for small section, bar and wire rod mills. also used as cold mill rollers for ferrous and non-ferrous sheets.