About thermal spray coating

Arc Wire Spray

More Information
Arc Wire Spray

Typical coatings

  • Iron based alloys
  • Nickel based alloys
  • Copper & Copper alloys
  • Aluminium, Zinc, Al/Zn alloys
  • Babbitt alloys

Main applications

  • Wear resistance
  • Corrosion protection
  • Dimensional restoration
  • Bond coat

What is Arc spray?

This form of thermal spraying uses wire material as a feed stock. An electric arc is used to provide the heat source by utilizing two current carrying wires. As the wires are fed towards each other the electric current short circuits between the wires creating a temperature of around 4,000°C. This temperature causes the tips of the wire to melt and once molten, compressed air or inert gas is used to atomize and accelerate the feed metal towards the substrate.

One of the advantages of this system is that two different wires can be used simultaneously to produce a pseudo alloy. Cored wires are also available producing coatings with unique properties.

The process is often used when applying to large areas such as corrosion resistance on large components or for the building up of worn components.

Arc Spray related images.

Thermal spray guns for Arc Spray

FST offers complete Thermal Spray Torch kits including all accessories like cables and hoses, cooling nozzles etc.