| After-sales Service: | One Site Training and Installation |
|---|---|
| Warranty: | One Year |
| Particle Size: | D50 50micro |
| Oxygen: | 10ppm |
| Temperature: | 3000-10000K |
| Transport Package: | Standard Export Package |
| Customization: |
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Audited Supplier 1. Introduction
RF plasma has the good features of high energy density, high heating intensity, plasma arc of large volume, simple process, etc. Also because it is electrodeless there is no pollution on product caused by electrode evaporation.
Principle: inert gas (argon) is ionized to be stable plasma torch of high temperature argon under the effect of high frequency power supply; raw materials of powder are introduced into plasma torch by carrier gas (nitrogen) through powder feeder, powder particles absorb much heat when in plasma torch of high temperature and their surfaces melt rapidly; powders are introduced into reactor at a tremendous rate and then they are cooled fastly under inert gas and solidified into spherical powder under the effect of surface tension; and powders are collected in the collector.
2. Features
1. High heating temperature, fast cooling speed, and no electrode pollution;
2. Reacting materials being distributed dynamically in plasma, avoiding agglomeration and growth of powder, suitable for melting and spheroidizing;
3. Manufacturing powder of high melting metal and oxide, such as Mo, Ti, W, WC, aluminium oxide, silicon oxide, zirconium oxide, etc;
4. Regular powder shape with spheroidization rate of over 90%; smooth and bright surface; good flowability; and increasing powder compactness and bulk density.
3. Technical Parameters
1. Total power: 100kW;
2. RF torch: 100kW, 3MHz;
3. Capacity: 3-4kg/h;
4. Ultimate vacuum degree: 8*10-2Pa;
5. Total power of the whole equipment: 150kW.
4. Equipment Structures
RF plasma spheroidization powder manufacturing equipment is mainly consisted of the following parts:
1. RF plasma torch;
2. RF plasma power supply;
3. Gas and powder feeding system;
4. Reactor-collector and holder;
5. Vacuum pumping system;
6. Electrical controlling and measuring system;
7. Water chiller unit;
Skyline's Plasma Spheroidization Equipment for Improved Metal Powder Flow and Packing Properties
To achieve optimum flow characteristics and high packing density, an ideal Additive Manufacturing (AM) metal powder should be highly spherical in shape with no satellites. Asspherical particles have minimum surface area to volume ratio this brings an added advantage in principle, of reduced surface contamination e.g. oxygen pick up. Increased particle sphericity can improve powder feeding, resulting in smoother layers, improved packing density, increased heat conduction in the powder bed and an enhanced melting profile. Generating a component by AM, also known as metal 3D Printing, relies on building the final design through a series of many thousands of layers. Whilst different metal powders can be selected according to the required performance of the final part, reproducible behavior of the powder throughout the process is key to a successful build.
Plasma Spheroidization
In principle, any metallic powder can be plasma treated to improve the flow and packing properties of low sphericity, irregular, sponge-like, agglomerated and angular metallic powders produced by other methods e.g. water atomization, chemical and mechanical processes, and standard gas-atomization. This case study presents the results of Skyline's plasma spheroidization process on morphology, flow, and packing properties of three different metallic powders - pure Tungsten (W), Ti6Al4V, and pure Tantalum (Ta).
Plasma Spheroidisation Conclusion
Morphology and packing density have a significant effect on the quality of the powder layer and melting behavior, depending on deposition system. Plasma Spheroidization at Skyline has been shown to be an effective method of controlling the shape, flow and packing characteristics to defined specifications across a range of metallic powders to deliver reliable, reproducible performance. At Skyline, we have a wealth of expertise in metal AM, and extensive experience of working with leading companies within the aerospace, biomedical, and automotive industries. We utilize this knowledge and the capabilities of plasma technology to provide solutions across a wide range of industries and AM platforms.
Advantages of Plasma Spheroidization
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Audited Supplier 
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