High Velocity Oxygen Fuel (HVOF) is one of the most commonly used spray coating which improves or restores a component’s surface properties or dimensions, and extends equipment life by significantly increasing erosion and wear resistance, as well as corrosion protection.
With the HVOF coating process, the gas stream is produced by mixing 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 with very low average porosity (< 1 %).
The HVOF coating technique allows the application of materials such as metals, alloys, plastic, composites and ceramics to produce a coating of exceptional hardness. There is also, outstanding adhesion to the substrate material, which provides substantial wear resistance and corrosion protection.
Common Applications of HVOF Coatings are: Pumps, Valves, Seals, Actuators, Rams, Impellers, Pistons, Shafts, Bearings, Wear Rings, Landing Gear Legs, Flap Tracks, Gas Turbines Shafts, Pulp and Paper Rollers, Print and Packaging Rollers, Traction Rollers, Agitators and Stirrers.