Plasma pulverizing

Preparation Equipment and Key Components - Nozzles and Electrodes）

1. Introduction to Plasma Powder Preparation Equipment  

Plasma powder preparation technology utilizes high-temperature plasma (arc, RF, or microwave-excited) to melt, vaporize, or react with raw materials (metals, ceramics, etc.), followed by rapid condensation to produce ultrafine powders (nano/micron-scale). This technology is widely used for manufacturing high-purity powders, spherical powders, and composite powders. Core equipment includes:  

- Plasma Generator: Produces a high-temperature plasma torch (typically DC arc or RF plasma).  

- Feed System: Delivers raw materials (e.g., wires, particles, or gaseous precursors) into the plasma high-temperature zone.  

- Reaction Chamber & Collection System: Controls the powder-forming environment (e.g., inert gas shielding) and collects ultrafine powders.  

- Cooling & Classification System: Rapidly condenses powders and classifies them by particle size.  

Among these, nozzles and electrodesare the core components of the plasma torch, directly impacting plasma stability, temperature distribution, and powder quality (e.g., sphericity, purity).

2.Our Products: Dedicated Nozzles and Electrodes for Plasma Powder Preparation

(1) Plasma Torch Nozzles  

Materials:  

- High-Purity Copper (Water-Cooled Design): Withstands high temperatures (>3000°C), resists thermal shock, ideal for metal powder preparation.  

- Special Ceramics (e.g., Zirconia): Used in corrosive atmospheres (e.g., nitridation, carburization reactions).  

Structural Features:  

- **Laminar Flow Nozzle**: Optimizes plasma jet stability, reduces turbulence, and enhances powder sphericity.  

- Multi-Channel Design: Integrates carrier/reaction gas inlets for synthesizing composite powders (e.g., TiCN, WC-Co).  

Applications: Preparation of spherical titanium powder, silicon carbide powder, superalloy powders, etc.

(2) Electrodes  

Core Advantages:  

Materials:  

- Thoriated Tungsten Electrodes (DC Arc): High electron emission efficiency, erosion-resistant.  

- Water-Cooled Copper Electrodes (RF Plasma): Long-life design, suitable for continuous production.  

Structural Features:  

- Self-Rotating Electrode: Prevents localized overheating of arc spots, extending service life.  

- Segmented Design: Facilitates maintenance and replacement, reducing downtime costs.  

Coating Technology: Platinum or rare-earth oxide coatings enhance oxidation resistance (for air plasmas).

3. Why Choose Us?  

- Customization: Tailor nozzle-electrode combinations based on material properties (melting point, volatility).  

- Process Optimization: Provide synergistic design solutions for plasma parameters (power, gas flow) alongside nozzles/electrodes.