Powder Flame Spray


Material in powder form is melted in a flame (Oxy-Acetylene or Hydrogen most common) to form a fine spray. When the spray contacts the prepared surface of a substrate material, the fine molten droplets rapidly solidify forming a coating.

The main advantage of this process over the similar wire flame spray process is that a much wider range of materials can be easily processed into powder form giving a larger choice of coatings.

Characteristics of Powder Flame Spray

 Material Form  Powder
 Heat Source  Oxy-Fuel Combustion
 Flame Temperature (°C)  3000
 Gas Velocity (m/sec)  < 300
 Porosity (%)  10 to 15
 Coating Adhesion (MPa)  14 to 21


Advantages:

  • High production spray rates
  • Easy to operate & portable
  • Large choice of coating materials
  • Can be easily automated