Abstract: Disclosed herein is a carbide roll having an improved composition for hot forming steel rod in multi-stand rolling mills. The improved composition comprises the addition of nickel as a binder material to a normal tungsten carbide-cobalt roll composition, preferably, so that the composition by volume is approximately: tungsten carbide--70 percent; nickel--10 percent; and cobalt--20 percent. A dual composition is disclosed, wherein the above composition forms the inner layer of the roll and an outer layer may be composed of, by volume, tungsten carbide--70 percent and cobalt--30 percent.

Abstract: A rolling mill roll assembly having a cemented carbide work roll mounted on a tapered rolling mill arbor is described. The roll is held nonrotational with respect to the arbor by a split metallic ring member which is forced into pressurized abutment with the bore of the carbide roll by a cylindrical wedge member interposed between the split ring and the arbor.