Brief introduction of cemented carbide roll ring

Brief introduction of cemented carbide roll ring:

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 appearance 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 of our products, there are two series as Wc-Co and Wc-Co-Ni-Cr which possess the good comprehensive mechanical properties. The bending strength and impact toughness reach 2200 Mpa and(4-6)x106J/m² respectively.

It’s hardness and wear resistance come from tungsten carbide (Wc) while the toughness and strength depend on the binding agent(Co-Ni-Cr).

 

Dimensions and precision of finished carbide roll rings

Dimensions range of finished rolls

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External diametermm

Inner diametermm

Heightmm

100~480

50~380

20~200

 

Tolerances allowable for the OD,ID and height of roll rings

Precision class

External diametermm

≦200mm

External diametermm>200mm


better

ordinary

better

ordinary

Out diameter

(mm)

±0.02

±0.05

±0.03

±0.05

Special requirements

Inner diametermm

±0.0200

±0.0350

±0.0250

±0.0500

Heightmm

±0.025

±0.10

±0.05

±0.10

Note:we can supply them according to the drawings provided by customers.

 

Technical specifications of finished carbide roll rings

Radial runout of groove

Radial runout of peripherys

End face runout

End face planeness

End face parallelism

Inner hole cylindericity

≦0.013mm

≦0.013mm

≦0.02mm

≦0.01 mm

≦0.01 mm

≦0.01 mm

Roughness of carbide rolls

Inner hole roughness 0.4μm

Periphery roughness0.8μm

End face roughness o.4μm

The allowable deviation in external diameter,internal diameter and height is to be determined based

On customers’needs.