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metalforming - mill rolls


Mill Rolls

Kennametal manufactures mill rolls from cemented tungsten carbide grades tailored for the demanding environment of hot rolling mills that produce wire rod and seamless tube.

We deliver mill rolls as unfinished blanks, semi-finished rolls with ground inner diameter and thickness, or rolls fully finished to your drawing. These mill rolls are manufactured in dimensions of up to Ø630mm outside diameter and a maximum thickness of 400mm.

composite mill rolls


Composite Rolls With Easy-To-Use Clamping System

Kennametal composite mill roll assemblies are designed for use in the high torque, low speed (<10m/sec), intermediate stands of wire rod mills where traditional cast iron or PM steel rolls are used. These roll assemblies are supplied in two axial clamping systems —  a traditional hydraulic clamp, and our new mechanical clamp that's easy to install and maintain. Our mechanical clamp provides clamping forces equivalent to hydraulically clamped assemblies, but without the need for specialized tools or fluid.

Kennametal Tungsten Carbide Grades for Hot Rolling Applications

Kennametal Grade

Tungsten Carbide %

Binder Composition

Binder %

Density g/cm³

twardość, HV

rozmiar ziarna:
MN0 94.0 Kobalt 6.0 14.90 (1350) obróbka zgrubna
MN04 90.5 9.5 14.50 1230 obróbka zgrubna
MN05 86.5 13.5 14.15 1100 obróbka zgrubna
MN1 86.5 13.5 14.15 970 Extra Coarse
MN2 85.0 15.0 14.05 950 Extra Coarse
MN3 83.0 17.0 13.85 890 Extra Coarse
MN4 80.0 20,0 13.55 830 Extra Coarse
MN5 75.0 25.0 13.10 730 Extra Coarse
MN6 70,0 30.0 12.75 670 Extra Coarse
BN45 88,0 Co-Ni-Cr 12.0 14.25 1075 obróbka zgrubna
RCV3 85.0 15.0 14,00 1090 obróbka zgrubna
BN55 85.0 15.0 14,00 950 obróbka zgrubna
RCV4 80.0 20,0 13.50 930 obróbka zgrubna
BN65 80.0 20,0 13.5 870 obróbka zgrubna
RCV5 75.0 25.0 13.05 800 obróbka zgrubna
RCV6 70,0 30.0 12.70 670 obróbka zgrubna
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