High velocity oxygen fuel spraying (HVOF)

High velocity oxygen fuel spraying involves continuous gas combustion with a mixture of kerosene and oxygen in a combustion chamber. The downstream expansion nozzle generates flow velocities in the gas jet of approx. 2500-3000 m/s, resulting in extremely dense spray coatings with excellent adhesion properties.

The spray material is melted in the flame and impinges on the component at a speed of approx. 600-700 m/s. High-quality, hard, very dense and highly wear-resistant coatings are produced.

Examples of coating materials:

• Tungsten carbide
• Tungsten carbide-cobalt chrome
• chromium carbide-nickel chrome
• Nickel chrome
• etc.

Keywords:

• Coating possible on almost all base materials
.
• hard coating
• low heating of the base material
• external and internal coating
• coating to size possible