Professional Tungsten Carbide Roll Rings / TC Roll Rings For High Speed Wire

Brand Name:VKD

Minimum Order Quantity:negotiate

Delivery Time:15-20 working days

Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram

Place of Origin:zhuzhou

Price:Negotiable

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Zhuzhou Weikeduo Cemented Carbide Co., Ltd.

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Location: Zhuzhou Hunan China

Address: Room 411, Building B, Smart Cube, No. 460, Jinshan Road, Hetang District, Zhuzhou City, Hunan Province

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professional TC roll rings of finishing rolling mill (1.2-2.0)mm tungsten carbide pellet

cemented carbide roll rings (also known as tungsten carbide roll ring) possesses good thermal conduction property.Compared with other materials,it is much better in terms of heat-resistance, wear-resistance and strength.What ’s more,its hardness reduces a little under the condition of high temperature.So ,the cemented carbide roll rings is invented with the ap-pearance of

high speed wire rod mill.With the development and improvement,it is widely applied in the production of high speed wire,bar and deformed steel bar.

As far as the material for our products,there are two series as Wc-Co and Wc-Co-Ni-Cr which possess the good compre-hensive mechanical properties.The bending strength and impact toughness reach 2200 Mpa and(4-6) x106J/ m'respectively.Its hardness and wear resistance come from tungsten carbide (Wc) while the toughness and strength depend on the binding agent

(Co-Ni-Cr).

At present,the finishing mill is generally composed of 8- 10 stands.Because of the big size of fracture surface of rolled part,the collar on the front stands of finishing mill may resist heavy duty and

strong impact.Thus,the high hardness and good thermal fatigue resistance are the primary factors,which are prior to wear-resistance.While there is low load and impact for therear stands,

we shall pay more attention to the wear-resistance and thermal fatigue resistance of roll rings.

strong impact.Thus,the high hardness and good thermal fatigue resistance are the primary factors,which are prior to wear-resistance.While there is low load and impact for therear stands,

we shall pay more attention to the wear-resistance and thermal fatigue resistance of roll rings.

Grade	Chemical composition		Mechanical properties				Physical properties
	Chemical composition		Mechanical properties				Physical properties
	Co+Ni %	WC %	Hardness HRA	Transveres rupture strength (Sample B) MPa	Compressive Strength MPa	Young^'s modulus of elasticty KN/mm²	Density g/cm³	Thermal conductivity Cal/cm sec/℃



YGH20	10	90	≧86.0	≧2500	3500	560	14.2-14.5	0.2
YGH25	12	88	≧84.0	≧2300	3400	550	14.0-14.3	0.21
YGH30	15	85	≧83.5	≧2520	3300	540	13.8-14.2	0.2
YGH40	18	82	≧83.0	≧2570	3200	500	13.4-13.9	0.19
YGH45	20	80	≧82.0	≧2570	3100	480	13.3-13.9	0.18
YGH55	26	74	≧81.0	≧2570	3000	450	12.6-13.2	0.17
YGR20	10	90	≧85.0	≧2400	3400	550	14.2-14.8	0.2
YGR25	12.5	87.5	≧83.0	≧2270	3300	540	14.0-14.3	0.22
YGR30	15	85	≧83.0	≧2360	3200	530	13.8-14.3	0.2
YGR40	18	82	≧82.0	≧2400	3200	430	13.5-13.9	0.2
YGR45	20	80	≧80.5	≧2250	3000	480	13.4-13.9	0.18
YGR55	25	75	≧79.0	≧2400	2800	420	12.9-13.4	0.17
YGR60	30	70	≧78.5	≧2200	2600	300	12.6-13.1	0.16

Grade	Recommended applications
YGH20	Maximum hardness ,excellent wear resistance in the series.Used in the last 1-2 stands of good high speed line mills for rolling common and hard bars.
YGH25	Higher wear resistance,moderate impact resistance in the series.Used in the last 1-3 stands of good high speed line mills for rolling common and hard bars.
YGH30	Moderate wear resistance and impact resistance,good for general purposes.Used in the last 1-4 stands of finish rolling mills.
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 finish rolling mills and in the stands of prefinish rolling mills.For every stand of the rolling lines for low speed rolling,low precision and unstable operation.
YGH55	Maxmum binder content in YGH series,good toughness and crack resistance.Used in the stands of perfinish rolling mills and for rolling screw thead steel

Grade		Recommended application

YGR20		High wear resistance and corrosion resistance.Used in the last 1-2 stands of finish rolling mills.

YGR25		High wear resistance and corrosion resistance.Used in the last 1-3stands of finish rolling mills.

YGR30		Good toughness,wear resistance,corrosion resistance and crack resistance.Used in the middie and rear stands of finish rolling mills.

YGR40		Good toughness and thermal crack resistance,dood for general purposes.Used in the most stands of finish rolling mills and in the rear stands of common mills.

YGR45		Good toughness and thermal crack resistance,Used in the front stands of finish rolling mills.

YGR55		Good impact resistance.Used in the stands of prefinish rolling mills for hot rolling screw thread steel bars and they, can be machined with turning and milling.

YGR60		Good impact resistance and toughness. Used for hot rolling screw thread steel bars and in the first and second stands of prefinish rolling mills.

The allowable deviation of carbide roll rings

Radial runoutofgroove ≤ 0.013mm
Radial runout of periphery ≤0.01 3mm
End face runout ≤ 0.02mm
End face planeness ≤ 0 .01mm
End face parallelism ≤ 0.01mm
Innerholecylindericit ≤ 0.01mm

Roughness of carbide rolls

inner hole roughness 0.4 u m
periphery roughness0.8 u m
end face roughness 0.4 u m