Arc Spray

Arc Spray

Two wires are electrically charged in opposite directions. When the wires come in contact with one another, the wires melt. A stream of compressed air then propels the molten particles to a prepared work surface to form a coating. Arc spray coatings are an economical option for restoring parts back to size while providing good wear resistance.

Energy Source & Consumption

Electricity 3-5 kW, Compressed air
2400 Scfh

Spraying Factors

Spray Rates10 to 35 lbs/hour
Deposit Efficiencies65% to 75%
Deposit Per Pass.002” to .005”
Particle Velocities650 – 800 fps

Coating Properties

MaterialsWire drawn materials, base metals, carbon & stainless steels, some alloy materials
Coating Finishing ProcessesMachine, Mill or Grind
Hardness Range of Materials/CoatingsRc 40-60
Typical Oxide Content5% to 18%
Typical Porosity Levels5% to 12%
Erosion Resistance RatingFair to Good
Abrasive Wear Resistance RatingFair to Good
Thermal Cycling & Thermal Shock CapabilitiesGood
Co-efficient of Thermal Expansion & ContractionGood
Corrosion/Oxidation Resistance RatingFair