In the thermal spray process, plasma spray coating is a widely used technique that produces high-performance coatings with excellent durability and reliability.

During the plasma spray process, a significant plasma arc is generated to melt most of the powdered coating materials, such as ceramic or metal powders. The plasma spray gun consists of a chamber containing electrodes and nozzles. Plasma gases like argon, nitrogen, hydrogen, or helium flow around the electrode and through the nozzle. A direct current power source is applied to the electrode, creating an arc to the nozzle, releasing tremendous heat. The temperature inside the chamber can exceed 12,000°C.

As a critical component of the plasma spray gun, the plasma nozzle faces challenges arising from high temperatures.

Structure of F4 Plasma Spray Nozzles

For the F4 nozzle in plasma spray, we adopt the back-casting method to connect copper alloy and tungsten alloy. Through this integral connection method, the two alloys fuse, achieving a seamless connection. This results in even heat conduction, high strength, and minimizes product issues, allowing customers to enhance operational efficiency for continuous operations.

For the inserted tungsten material, we recommend materials without thorium for environmental friendliness and superior performance.

Models of F4 Plasma Spray Nozzles

Advantages of F4 Plasma Spray Nozzles

1. Longer lifespan, higher precision.

By utilizing NDB technology (back-casting technology), our plasma F4 nozzle achieves a perfect combination. The 100% combination of tungsten and copper ensures better thermal conductivity and heat dissipation. Additionally, we equip high-precision machining equipment to meet your requirements for precision.

2. Ample inventory, shorter lead time.

For plasma spray equipment from brands like Metco, FST, AMT, GTV, etc., each type has its plasma spray gun. Common guns include F4 plasma guns, 9MB plasma guns, 3MB plasma guns, and SG-100 plasma guns. We are familiar with these guns and their corresponding accessories. Just let us know your requirements, and we can provide the necessary products, ensuring a worry-free replacement. Moreover, our common products are stocked, allowing you to get what you need promptly.

3. Multiple material choices, achieving different product performances.

Whether it’s tungsten alloy or copper alloy, we offer various materials for you to choose from. Inform us of your performance requirements, and we can provide materials suitable for your specific application scenarios.

Have you encountered issues such as cracks in the nozzle’s interior or poor coating quality in practical use? If so, feel free to consult us! We can provide free advice!