High Velocity Oxy Fuel (HVOF) coating is a thermal spray process which creates an extremely high velocity molten particle using fuel and oxygen in the combustion chamber. Coating powder materials are injected along the high velocity gas stream which exits through the nozzle at a supersonic speed. Many materials (metals/hard ceramics etc.) can be coated on the substrate due to high temperature and pressure.

Schematic representation of High Velocity Oxy-Fuel Coating Process


  • Higher splat flattening ratio and better lamella packing
  • High packing efficiency reduces the porosity level and achieve the coatings with low degree of fragmentation
  • Less carbide decomposition or minimal oxidation are achieved due to high droplet impact velocity and relatively colder particle stream
  • Formation of mixed columnar and equiaxed grains in the microstructure reduce the propagation of cracks
  • Low fraction of defects (porosity/cracks/ fragmentation), less carbide decomposition and better interlamellar cohesion leads to high hardness

HVOF can be performed on the following components (but not limited to)

  • Mining equipment which requires extremely high-wear resistance
  • Mineral processing equipment which is used in highly corrosive and erosive-corrosive environments
  • Engine
  • Transmission
  • Brake / Driveline
  • Oil & Gas
  • Pumping
  • Bearing housings
  • Hydraulics

We perform HVOF coating of high hard ceramics on metallic substrate materials to restore the components and improve the wear resistance against damage. We provide solutions for improving the performance of the materials in extreme environments by selection of coating materials and optimizing the process.

Please contact us to improve the performance of your components and reduce downtime using our HVOF coating facility.

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