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Machines & equipment for sale

Why You Should Choose High-Velocity Fuel Coating (HVOF)

HVOF image

High Velocity Oxygen Fuel coating is a thermal spray coating process that is used to improve or restore a component´s surface. This surface engineering technique better enables life extension of equipment by increasing erosion, wear resistance, and corrosion protection. This process was developed in the 1980s, and is a subset of thermal spraying.

 Using HVOF coating technique allows the application of coating materials such as metals, alloys, and ceramics to produce a coating of exceptional hardness, outstanding adhesion to the substrate material and providing substantial wear resistance and corrosion protection.

Advantages of Using HVOF Coating

  • Enhanced protection against wear, corrosion, fatigue, oxidation and high temperatures
  • Lower oxide content due to less in-flight exposure time
  • Retention of powder chemistry due to reduced time at temperature
  • Smoother as-sprayed surface due to higher impact velocities and smaller powder sizes
  • Higher hardness due to less degradation of carbide phases
  • Thicker coating
  • Reduced costs
  • Improved performance and electrical properties
  • Enables components to operate in higher/lower temperatures and harsh chemical environments
  • Improved efficiency and improved life of mating components
  • Our advanced robotic application technology enables a uniform coating to be achieved on complex shape and multifaceted components

Application & Materials

Thermal spray coating is an attractive technique because it offers a wide choice of materials and processes that have a reduced impact on the environment when compared to conventional processes. HVOF coating materials that are available for thermal spray coating include metals, alloys, ceramics, plastics and composites.

  • Valve gates & seats
  • Mandrels
  • Ball valves
  • Rock Drill Internals
  • Pump impellers and internals
  • Sub-sea infrastructure components
  • Landing gear
  • Gas Turbine Components

Process Details

HVOF coating material is heated and accelerated by a gas stream to a component´s surface, to attain better properties. The gas stream is produced by mixing and igniting oxygen and fuel (gas or liquid) in a combustion chamber and allowing the high-pressure gas to accelerate through a nozzle. A powder is introduced into this stream where it is heated and accelerated towards a component´s surface. The resulting thermal spray coating consists of thin overlapping platelets.

Interested in finding out more about our Oerlikon Metco, Switzerland HVOF  Thermal Spray Cell  get in touch with us!

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Oerlikon Metco, Switzerland HVOF  Thermal Spray Cell