Large-Scale PREP System (SLPA-N75)
Target Groups:
The users who make the continuous, industrial production of high-quality spherical metal powders, specifically for Titanium alloys.
Application:
Production of high-quality spherical metal powders, such as:
- Superalloy powders
- Titanium alloy powders
- Refractory alloy powders
- High entropy alloy powders
- Other metal powders with melting point up to 2,600℃
Main Advantage
- Reasonable cost for large-batch production
- Ergonomics friendly, easy to operate
- Simple and professional man-machine interface design
- The produced powders have high sphericity (over 90%) and high quality, such as low porosity powders, low satellite powders, high purity (low oxygen increase,≤120ppm) due to atomizing in the inert protection atmosphere.
- Suitable for production of metal powders with melting point ≤2,600℃
Basic Principle
Consumable electrode made of metal or alloy, whose end surface is heated by plasma arc to melt into liquid, and the liquid is ejected and crushed into fine droplets by the centrifugal force of high-speed rotation of the electrode. The droplets eventually form a spherical powder under the action of surface tension in the condensation process.
Technical Characteristics
- Plasma transfer arc
- High rotating speed consumable electrode (up to 22,000rpm)
- Inert gas protection (Ar or He)
- Low energy consumption
- The produced metal powders have high-quality and high sphericity, which are very suitable for laser cladding, hot isostatic pressing (HIP) and other AM processes.
Main Technical Parameters
| Rotating speed of electrode rod | Average 22,000rpm (Adjustable) |
| Diameter of Eletrode rod | Φ75mm |
| Powder Morphology | Spherical Rate ≥90% |
| Particle Size Distribution | TA15： -150μm≥75%，-250μm≥95% |
| Capacity | ≥100kg (8h, TA15) |
| Oxygen Increment | ≤120ppm |
| Atmosphere | Ar or He (high purity) or other inert gas |
| Maximum power | 300kW |
| Floor Space | 8m x 8m x 6m |
| Applications | Ti&Alloys, Ni&Alloys, Co&Alloys,Stainless steels, high entropy alloys, Cu& Alloys and refractory alloys, etc. |
Main Sub-systems
| 1 | Plasma gun system | In-house design and manufacturing |
| 2 | High rotating speed shaft system and dynamic sealing mechanism | In-house design and outsourced |
| 3 | Feeding system | In-house design and outsourced |
| 4 | Powder collection system | In-house design and outsourced |
| 5 | Atomization chamber | In-house design and outsourced |
| 6 | Vacuum system | Outsourced |
| 7 | Cooling system | In-house design and outsourced |
| 8 | Gas supply system | In-house design and outsourced |
| 9 | Power supply and Electrical control system | Outsourced |
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