HVOF Coating
HVOF is a dense, controlled thermal spray coating solution based on tungsten carbide and chromium carbide systems for critical parts operating under wear, erosion and corrosion.
When is it the right choice?
It is preferred for shafts, rolls, piston rods and process components that require low friction, high wear resistance, precise final dimensions and low heat input into the base material.
Selected to Suit Project Conditions
What does it deliver when used correctly?
- High wear and erosion resistance
- A process with minimal effect on base material properties
- Surface finished to final tolerance by precision grinding
- Different carbide/metal systems to suit project conditions
FAQ
What is HVOF coating and what does it do?
HVOF (High Velocity Oxy-Fuel) is a thermal spray process that propels a powdered alloy onto the part surface at supersonic speed. It forms a dense, low-porosity, hard coating that protects against wear, erosion and corrosion; it is widely used with tungsten carbide and chromium carbide based systems.
What thickness is HVOF coating applied at?
The typical application range is 100–400 microns. Where a thicker build-up is required, weld-based processes such as PTA are considered. The exact thickness is determined by the part and its operating conditions.
Can HVOF coating replace hard chrome plating?
In many industrial applications, tungsten carbide based HVOF coatings are considered as an alternative to hard chrome plating. The choice depends on the operating conditions and the customer specification.
Is grinding required after HVOF coating?
On functional contact surfaces it usually is. The coating is applied slightly over the target dimension; precision grinding then brings the dimension and surface roughness to the required values.
Is It Right for Your Part?
Send us photos, a technical drawing and the operating conditions; let us evaluate the process and material system together.