Tungsten Carbide Roller,Grooved Roller Manufacturer

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Grooved Roller

Description

Tungsten carbide rollers possess resistance to thermal cracks and corrosion due to adding nickel and chromium in the binder. It can reduce the depth and width of micro cracks in grooved rollers, extend the service life and obtain high tonnage and good surface quality. If the PH of cooling water is less than 7.2, tungsten carbide rollers will show their special superiority.

Features of Grooved Roller

1. The tungsten carbide roller has excellent heat-conducting property, high abrasion resistance and corrosion resistance.
2. Under normal temperature, the hardness can reach HRA78~95. Under high temperature, they also own excellent red hardness.
3. The coefficient of linear expansion of grooved roller is about 0.35 to 0.65 times of the steels with the temperature between 20℃ and 400℃.
4. The tungsten carbide roller has high density, which ranges from 12.6g/cm3 to 14.9g/cm3.
5. We have our own grades for carbide rolls.

Range of Size

The external diameter of this tungsten carbide roller ranges from 145 mm to 380 mm.

Physical and Mechanical Properties of LR Series Grooved Roller

Grade	Chemical Composition %		Density g/mm³	Hardness HPA	Bending Strength N/mm²	Compressive Strength N/mm²	Thermal Conductivity Cal/cm.sec.C	Coefficient of Thermal Expansion 10-⁶/K
Grade	WC	Co+Ni+Cr	Density g/mm³	Hardness HPA	Bending Strength N/mm²	Compressive Strength N/mm²	Thermal Conductivity Cal/cm.sec.C	Coefficient of Thermal Expansion 10-⁶/K
LR20	89	11	14.3	≥86.0	≥2200	3400	0.2	6.0
LR25	87	13	14.1	≥84.0	≥2200	3400	0.2	6.0
LR30	85	15	13.9	≥83.0	≥2300	3200	0.2	6.1
LR40	82	18	13.6	≥82.0	≥2300	3200	0.2	6.2
LR45	80	20	13.5	≥81.0	≥2200	3000	0.14	6.4
LR55	75	25	13.0	≥80.0	≥2200	2800	0.17	6.8
LR60	70	30	12.8	≥79.0	≥2100	2700	0.15	7.0

Elevated Temperature Property of LR Series Tungsten Carbide Roller

Grade	Hardness (HV)			Bending Strength (N/mm²)
Grade	20℃	300℃	600℃	20℃	300℃	600℃
LR20	1000	750	600	2200	2100	2000
LR25	1000	750	600	2200	2100	2000
LR30	900	700	550	2300	2200	2000
LR40	750	650	530	2300	2100	2000
LR45	730	600	500	2250	2100	2000
LR55	700	550	450	2200	2000	1900
LR60	680	830	430	2100	1900	1800

Note

An overall understanding of the properties of all kinds of cemented carbide grades is the basis for properly choosing the grades for tungsten carbide rollers.

Packaging and Payment

1. Standard packing or neutral packing is available.
2. Our grooved rollers can be paid by telegraphic transfer and letter of credit.

Zhuzhou Lizhou Cemented Carbide Co., Ltd is a professional manufacturer and supplier of tungsten carbide roller in China. In addition to grooved rollers, we have carbide roll rings, carbide wire drawing dies and tube drawing dies. We have passed ISO90012000 International Quality System Certification. Last year, the annual income is 35 million, which includes 20 million export revenue and 15 million home sales.