Autogenous and electric wire spraying

Electric (autogenous) wire spraying is a spraying technique that uses electricity to melt a metal wire, which is then projected onto the substrate using compressed air. This technology is both versatile and reliable, and is perfectly suited for repairing parts or preventively protecting them against wear or corrosion.

Basic principle

Autogenous and electric wire spraying

Electric wire spraying is a process in which two electrically conductive metal wires are passed through a spray gun. Sending a current through these metal wires creates an electric arc between them, and the high temperature of that arc (+/- 4000 °C) causes the wires to melt. The droplets of metal created as a result are constantly projected onto the workpiece using compressed air to create a protective coating.


  • Excellent coating adhesion and density
  • High degree of oxidation in the coating
  • Cheap thermal spraying process
  • Often used for adhesive layers


  • Cheap thermal spraying process
  • Wear-resistant repairs
  • Localised spraying is possible
  • Highly resistant to pressure
  • Little or no stretch properties

Available coatings

  • Nickel
  • Chrome steel


  • Repairing worn machine parts
  • Applying a wear-resistant protective coating
  • Improving corrosion resistance
  • Adding grip coatings
  • Repairing worn bearing/seat sets (size corrections)
  • Electric insulation