WC-based cemented carbides

Applications

Cemented carbide wear parts are used as friction pairs in slide bearings and face seals, stop valving, various tools and dies, etc.

Advantages of VIRIAL tribological cemented tungsten carbide grades:

1. High strength and wear resistance based on the control of the carbon balance and vacuum/Sinter-HIP processing technology that yields virtually pore-free materials. High strength of the carbides leads to lower fracture probability for the parts during operation.
2. Stable low friction ratio due to micron WC grain size lowers overall energy consumption.
3. High corrosion resistance of the carbides in aggressive media, e.g. formation liquid during oil and gas production at temperatures close to boiling point.
WC-based cemented carbides for tribological and wear applications are two-phase sintered cermets that contain tungsten carbide (WC) grains in Co and/or Ni binder, typically processed by powder metallurgy route. Metallic binder content typically ranges from 3 to 15%.
These cemented carbides feature excellent physical and mechanical parameters, e.g. hardness, Young modulus, impact strength, vibration resistance.
Cemented carbides considerably outperform structural ceramics in such aspects as strength and fracture toughness, and thus have much better load-bearing capacity, better processability and operational stability.