Arc Spray Coating Service

This type 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.

Basic Principle:
Arc Generation: Two charged metal wires are used as electrodes. When they are brought close to each other, an electric current forms an arc between the electrodes, and the high temperature generated by the arc instantly melts the tips of the metal wires.
Atomization and Acceleration of Particles: The melted metal is atomized into fine particles under the action of compressed air or inert gas and then accelerated and sprayed onto the surface of the pretreated substrate.

Main performance:

• Resistance to many corrosive environments
• Galvanically active and sacrificial coatings
• Resistance to wear, erosion and cavitation
• High temperature, oxidation resistance
• Prevention of biofouling materials
• Dimensional restoration
• Controlled surface profiles or textured surfaces
• Gripping and anti-skid surfaces

Whether you need a smooth, rough, thin or thick cover, arc sprayed coatings can provide the results you need for your project. Arc spraying is simple to use and can provide highly reliable and controllable surface effect. Some of the benefits of using arc spraying include: