High Velocity Oxygen Fuel (HVOF)
HVOF is a thermal spray process that uses oxygen and a combustible fuel to produce a low heat, high density, mechanically bonded coating that has extremely low porosity and high bond strength. Typical coatings include tungsten carbide, chrome carbide, stainless steel, Inconel and Monel.
Common HVOF applications include:
Aerospace & Defence
- Landing gear, internal and external surfaces
Energy
- PCPD and PCP rotors
- Bottom hole assembly component parts
- Turbomachinery component parts
Mining
- Cylinder rods
- Suspension rods
- Drive shafts
Petrochemical & Refining
- Turbomachinery component parts
- Valve components
Plastic and polymer processing
- Extrusion and injection screws (OD)
- Extrusion and injection barrels (ID)
- Mixer and valve bodies
Features and Benefits - HVOF
High kinetic energy process leads to high bond strengths (greater than 12,000 psi)
Produces extremely dense, low porosity coatings, typically less than 0.5%
Low residual stress allows application of a thick coating
Rapid application process
High impact velocities and small powder sizes result in smooth as sprayed coating
Low heat input - process can be controlled to keep substrate temperatures below 300°F
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Technologies
Thermal Spray
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