YGH20,YGH25,YGH30,YGH40 ROLL RINGS FOR HIGH SPEED ROLLING OF RIBBED
Cemented carbide roll ring is a lind of tool material which
consists of tungsten carbide and cobalt with high hardness and wear
YGH20: Maximum hardness, excellent wear resistance in the series.
Used in the last -2 stans of god high speed finishing mills for
rolling common and hard steel bar.
YGH25: Higher wear resistance, moderate impact resistance in the
series. Used in the last 1-3 stands of good high speed finishing
mills for rollin common and hard steel bars.
YGH30: Moderate wear resistance and impact resistance, good for
general purposed. Used in the last 1-4 stands or all stands of
YGH40: Best for general purposes. Used in the front stands of good
mills and in the rear stands of common mills.
YGH45: Used in the first and second stands of finishing mills and
in the stands of pre-finishing rolling mills. For every stand of
rolling lines for low speed rolling, low precision and unstable
YGH55: Maximum binder content in YGH series, ood toughness and
thermal crack resistance. Used in the stands of pre-finishing
rolling mills and for roll rins for hot rolling of ribbed steel.
The allowable deviation of carbide roll rings
radial runout of groove<or=0.01mm
radial runout of periphery<or=0.02mm
end face parallelism<or=0.01mm
end face planeness<or=0.01mm
inner hole cylindericity<or=0.01mm
Roughness of carbide rolls
inner hole roughness 0.4um
periphery roughness 0.4um
end face roughness 0.4um
4. Feature Advantage
The allowable deviation in external diameter, internal diameter and
height is to be determined based on customers' needs.