High velocity oxy-fuel coating(HVOF)

A mixture of oxygen and kerosene (HVOF liquid fuel), oxygen and propane/ethylene (HVOF gas fuel), or oxygen and a propane–propylene or propane-natural gas mix (HVAF) burns continuously. The material (powder) is forced under high pressure nitrogen through a convergent-divergent nozzle to the burner and is propelled at supersonic speed towards the surface that requires coating.

Spraying parameters:

• Coating thickness: 0.10 to 0.35 (max. 2.0) mm
• Porosity: 0.5%
• Adhesion: ≥ 60 Mpa

Spraying materials:

• Metals and metal alloys with low or intermediate melting points
• Cermets
• Ceramics