Arc
Arc spray is a wear-resistant thermal spray coating that uses an electric arc to melt wire material, applied economically to repair or enhance machine parts against erosion and corrosion.
What is arc spray?
Arc spray uses electricity and the heat of a current arc to melt wire material. Arc thermal spray systems continuously feed two wires into a gun assembly where the wire is heated. These two wires can be the same material or two different materials. This includes the use of cored wire to form special alloys for better wear or corrosion characteristics. Compressed air propels the coating onto the desired surface creating a durable metal coating. Due to the high heat and spray velocity, arc coatings can be laid down quickly and economically.
Arc Spray Solutions
Not only can arc spray be applied efficiently; it also achieves good bond strength and hardness during application. This makes it great for building up surfaces that are worn 1/4" or more. This system can also feed two different wire materials into the spray gun and create specialized alloys to tailor the coating for the best surface enhancement solution. Arc spray coatings are wear resistant and can enhance the electrical properties of machine components.
Advantages
- Economical operating cost
- Good bond strength and hardness during application
- Great for building up surfaces worn 1/4" or more
- Can feed two different wire materials to create specialized alloys tailored to the surface
- Coatings are wear resistant and can enhance electrical properties of machine components
- No heat distortion
- Coatings can be laid down quickly due to high heat and spray velocity
Common applications
- Shaft enhancement or repair
- Enhancing electrical conductivity
- Feed roll enhancement or repair
- No slip coating solutions
Common Coating Materials & Solutions
- Monel
- Inconel
- Stainless Steel
- Hastelloy
- Zinc
- Aluminum
- Tin
- Copper
Arc Spray Coating Properties
| Property | Value |
|---|---|
| Operating Cost | Economical |
| Bond Mechanism | Mechanical (1,500-9,000 psi) |
| Max Flame Temperature | Up to 7,000° F |
| Particle Velocity | 160-300 ft/sec |
| Max Spray Rate | 10+ lbs/hr/100 amps |
| Coating Thickness Range | 0.005" to 0.250" |
| Special Features | Economical, no heat distortion |
| Wear Resistance | Average |
| Corrosion Resistance | Acceptable |
| Porosity | Medium |
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