Small-Scale PREP System (SLPA-D30)
Target Groups:
- Universities
- Research institutes
- R&D department in factories
- Other users who need the high-quality spherical metal powders (especially suitable for the development of new materials and multi-varietal production with small lot)
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 3,410℃
Main Advantage
- Relatively lower cost for multi-small-batch production
- Quicker switch for multi-small-batch and diversified powder production (time reduction)
- Ergonomics friendly, easy to operate
- Simple and professional man-machine interface design
- High fine powders output rate due to high rotating speed (up to 50,000rpm)
- The produced powders have high sphericity (over 95%) and high quality, such as low porosity powders, low satellite powders, high purity (low oxygen increase,≤100ppm) due to atomizing in the inert protection atmosphere.
- Can produce nearly all metal powders which rods are electro-conductive, specially for refractory metals, high-activity metals, super-alloys, etc.
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 (Average 30,000rpm)
- 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 50,000rpm (Adjustable) |
| Diameter of Eletrode rod | Φ30mm |
| Powder Morphology | Spherical Rate ≥95% |
| Particle Size Distribution | D50≤43µm (Inconel 718) |
| Capacity | ≥10kg (8hrs, Inconel 718) |
| Oxygen Increment | ≤100ppm (Ti6Al4V ≤100ppm; Inconel 718 ≤50ppm) |
| Atmosphere | Ar or He (high purity) or other inert gas |
| Maximum power | 120kW |
| Floor Space | 4m x 3m x 2.5m |
| 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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