F4 Anode (nozzle) and Cathode (electrode) for Plasma Spray Equipment

Product Description

Product Description

We are professional manufacturer for F4 plasma spray nozzle and electrode with high quality and performance.

The F4 plasma spray gun nozzle, as specified by manufacturer Metco, is a critical component in atmospheric plasma spraying systems designed for high-performance coating applications. Its performance, characteristics, and function are defined by advanced material engineering and thermal management.

F4 Nozzle(Anode) Performance:
Thermal Resistance: Capable of withstanding plasma arc temperatures exceeding 12,000°C during continuous operation.
Thermal Conductivity: Engineered for uniform heat dissipation via a copper-tungsten back-cast structure, ensuring minimal thermal stress and prolonged service life.
F4 Nozzle(Anode) Arc Stability: Maintains consistent plasma arc attachment to the nozzle throat, enabling stable powder injection and coating uniformity.
F4 Nozzle(Anode) Operational Longevity: Designed for extended duty cycles without degradation, supporting industrial-scale, uninterrupted coating processes.

F4 Nozzle(Anode) Material Composition: Constructed using a monolithic copper-tungsten alloy interface, eliminating weld seams and preventing delamination under thermal cycling.
Tungsten Selection: Employs thorium-free tungsten to meet environmental and safety standards while preserving high melting point (>3,400°C) and electron emission stability.
Internal Geometry: Features a precisely machined conical orifice that focuses the plasma jet, optimizing gas flow dynamics and particle acceleration.
F4 Nozzle(Anode) Cooling Integration: Utilizes integrated water-cooling channels (inferred from industrial standards) to maintain structural integrity under extreme thermal loads, though explicit cooling schematics are not publicly detailed for this model.
Function and Application
F4 Nozzle(Anode) Primary Role: Serves as the confinement and acceleration channel for the plasma arc, enabling the complete melting and directional projection of ceramic or metallic powder feedstock onto substrate surfaces.
Coating Applications: Enables deposition of wear-resistant, corrosion-resistant, and thermal barrier coatings used in:
Industrial machinery components
Power generation turbines
Medical implant surfaces requiring biocompatible ceramic layers
F4 Nozzle(Anode) Industry Relevance: While not explicitly documented for aerospace use, its performance profile aligns with requirements for turbine blade coatings and engine component refurbishment in aviation and energy sectors.

The corresponding list of F4 nozzle electrode model and the model of other brand products

Product model	Product name	Related product model
WLE-F4	F4 electrode	1072006
WLN-F4-5	F4 nozzle	1088066
WLN-F4-6	F4 nozzle	1072007
WLN-F4-7	F4 nozzle	1088062
WLN-F4-8	F4 nozzle	1088057

There are many F4 electrode manufacturers on the market, but many of them can only make similar sizes, but there are many differences in service life and performance. As a professional manufacturer, we not only know how to produce, but also how to improve and understand customer's use, so we can provide more professional online services.

If you have any needs, users are welcome to come for consultation. Our company has a group of experienced technical and sales teams who will serve you wholeheartedly.

 

Certifications

 

      

Our Advantages

Advantages of plasma spray nozzles and electrodes produced by our company:
1. Our company has been engaged in the production of pure tungsten and tungsten alloy materials for many years, and has an in-depth understanding of the structure and properties of materials. For the tungsten electrode used in plasma spraying electrodes, based on our full understanding of the application, we have made more improvements and treatments to the material structure to meet the material requirements of plasma spraying. By densifying the tungsten electrode, a finer, more uniform grain structure is formed. The modified tungsten alloy has relatively high hardness and density, fast arc starting, excellent resistance to arc burning loss, and long life.

2. Our company's plasma spraying electrodes and nozzles use unique back-casting technology to achieve seamless bonding between tungsten and copper. The bonding strength can be as high as 127MPa, while the traditional bonding strength is less than 100MPa. Compared with traditional brazing, joints made by back-casting have higher bonding strength between tungsten and copper, larger contact area, more uniform resistance, and stronger heat dissipation ability, making the nozzle and electrode more stable and more durable as well as long service life.

3. We produce tungsten electrodes of different materials (good arc starting performance and ablation resistance). Based on customer usage conditions, we can provide more suitable materials for customers to choose.
 

Material	Impurity content (%)	Electron work function (eV)
Lanthanum tungsten	<0.2	2.8-3.2
Cerium tungsten	<0.2	2.7-2.8
Thorium tungsten	<0.2	2.0-3.9

4. Based on the research and analysis of plasma spray guns, the electrodes and nozzles produced by our company can perfectly adapt to the original spray guns, and no additional adjustment of spraying parameters is required during replacement. We have a complete product series, and the plasma spray electrodes and nozzles we produce can be widely used in F4, 9M, SG-100 and other spray guns of Metco, GTV, FST, AMT AG, Praxair and other companies.
5. We have rich experience in producing various cathodes and anodes, which can be customized and processed according to customer samples or drawings. We can also provide semi-finished products with seamless combination of tungsten and copper.

After Sales Service

 

We can ensure our all products which are seamless bonding,no gas foam generating,and assure concentricity,if any defect has been found which are due to our cause,we can replace them for free and send you along with shipment for next time.