Wire Flame Spray

The process is basically the spraying of molten metal onto a surface to provide a coating. Material in wire form is melted in a flame (Oxy-Acetylene flame most common) & atomised using compressed air to form a fine spray. When the spray contacts the prepared surface material, the fine molten dropletsw rapidly solidify forming a coating.

Characteristics of Wire Flame Spray

Advantages:

• Simple to operate
• Wire form cheaper than powder
• Very high deposit efficiency
• It has a portable system and can be used in areas without electricity
• Possibly still best for applying pure Molybdenum coatings

Disadvantages:

• Limited to spraying material supplied in wire or rod form
• Coatings have higher porosity and lower bond strength
• Not capable of spraying low oxide, high density & high strength coatings