Twin arc spray gun is used to boasts some of the highest deposition rates of the many thermal spray gun process. It is often used when large areas or a large number of parts need to be coated. this is also beneficial in spray application where a fuel gas, start or stop operation, and lightweight gun presents an issue.
This type of system ensures low operator fatigue and significantly reduced maintenance costs. In this system, the push method is used. The driving force is bigger in this gun, a more robust wire drive motor located within the control console. It drives the unit can be mounted on the power supply.
It is excellent for any metallic wire coating. It is used for broad area spray and dense coating applications. It is easy to operate and very low maintenance costs. It is small in size and no fuel gases are used. In this gun mostly 1/16”, 2mm wires are used.
It provides excellent bond strength due to the high temperature of molten particles. In this arc spray gun, an electronic motor control system is used to consistently feed the wire to maintain the correct voltage and current.
Twin arc spray gun is available with three air caps
- High-velocity air cap
- Open-air cap
- Fan air cap
The high-velocity air cap is versatile in design in which air pressure is increased if a focused high-pressure spray pattern is needed. An open-air cap allows spraying a very rough texture coating for traction, gripping. A fan air cap is used for a wider pattern for the large surface area components.
What Is The Twin Arc Spray Process
Two wires of conductive materials are charged with opposing polarity and fed at the same speed into an arc gun during the twin wire arc spray process (TWA). The wire tips collide, melt, and become molten. The molten material is atomized by dry compressed air, which forms the coating.
Twin Arc Spray gun System is commonly used to:
- It applies zinc coating and aluminum spray gun coating to structures and bridges to prevent corrosion
- The twin arc spray gun used copper, zinc, and aluminum to create conductive coatings
- On tube mill weld seams
- In anti-slip applications