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rePOWDER2025-08-11T11:30:19+02:00

Ultrasonic metal atomizer
and alloy prototyping platform

OUR DEVICE

rePOWDER – MORE THAN ULTRASONIC ATOMIZER

Our ultrasonic atomizer can be used to create metal powder from any alloy in any feedstock form, even in small quantities. What is more, raw elements or scrap materials can be used to prototype new alloying systems in form of cast or powder. Last but not least, failed printouts, unused powder, scrap or waste powder from other processes, thanks to rePOWDER, can be turned back into fine powder.

With this abilities, rePOWDER stands out as the most versatile atomizer available on the market.

ULTRASONIC ATOMIZATION

HOW IT WORKS?

Ultrasonic atomization is a liquid-to-solid type of process, where ultrasonic vibrations are used to create powders. The main principles of this technology are based on amplitude and surface wettability. When the threshold vibrational amplitude in the liquid layer wetted to the sonotrode is exceeded, standing capillary waves are generated (Lierke et al., 1967). Further increasing the amplitude disrupts the internal forces of the liquid, thereby ejecting small droplets from the melt.

FREQEUNCY VS PARTICLE SIZE

The size of the produced particles depends primarily on the ultrasonic frequency, although it is also influenced by the physical properties of the liquid material like density.

  • 20 kHz is most suitable for electron beam melting (EBM) and direct energy deposition (DED), leading to a d50 between 80–100 μm, depending on the atomized material,

  • 40 kHz is most suitable for LPBF and sintering technologies, leading to a d50 between 45–60 μm,

  • 60 kHz is most suitable for LPBF, binder jetting (BJ) , thermal spraying and sintering technologies leading to a d50 between 35–45 μm.

The resulting narrow particle size distribution (PSD) allows up to 80% of the manufactured powder to be used for dedicated technology.

FREEDOM IN METAL AM
DEVELOPMENT & PRODUCTION

From any feedstock

rePOWDER
ultrasonic atomizer

To desired powder

Powder quality: Flowability (hall flow): 4-5 g/s
Morphology: Sphericity (aspect ratio): d50 > 0.90

2 types of heat source

|  Induction Melting  |

Induction Melting is usually used to process alloys with melting points up to 1300 °C, for example:

  • Relatively low melting point and volatile elements that tend to evaporate in the plasma, such as Sn, Zn, Mg, Pb, and Al alloys,

  • Materials with high thermal capacities and conductivities, like Cu and precious metals such as Ag, and Au alloys.

The material in any shape and form can be placed into the crucible, including final alloy, master alloys, or pure elements.

All materials are easily alloyed thanks to the magnetic stirring effect.

|  Arc / Plasma melting  |

Heating can be carried under an inert or reactive gas atmosphere using an electric arc (TIG generator) or focused plasma. Material is fed and melted directly to the top of the sonotrode. It is crucial to have an appropriate sonotrode material with good wettability to the melted material to achieve an efficient atomization process and minimize the possibility of contamination.

Suitable for working with all medium and high-melting materials including:

  • Fe-based alloys,

  • Ti, Ni, Pt, Ir based alloys,

  • High Entropy Alloys,

  • Refractory materials such as W, Ta, V, Mo, Nb, Re, etc.

  • Metal Matrix Composite powders.

In house processed materials

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Availability of both induction and arc/plasma melting allows to cover the whole range of melting temperatures from 200 °C to 3500 °C. Such feature allows to produce powder from almost any alloy composition. This periodic tables shows the elements already processed with rePowder.

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OUR EXPERIENCE

200+


alloys worked with, over the last 5 years, many of them quite unique.

OUR POWDERS

Using advanced ultrasonic atomization technology, we produce high-quality, custom metal powders with superior characteristics, from any feedstock material, tailored specifically to your requirements, ensuring optimal performance in your applications.

Core benefits & features

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The rePowder ultrasonic metal atomizer and alloy prototyping platform combines versatility, efficiency, and innovation, offering a seamless solution for material research and production. Discover some of the most beneficial features of our device.

Processing of any elements or alloys

Ultrasonic atomization can be carried out on a wide range of pure elements (e.g., Zn, Mg to Pt, Mo, Ta), as well as any alloy composition (e.g., Mg-Li, CuSn6, TiTaZrRuCu, MoRe).

Any form of feedstock

The ability to atomize chips, failed AM prints, damaged samples, rods, wire, powder, and more.

Automated operation

A variety of automated feeders (e.g. powder, rod, wire) and automated plasma torch to make the operation as easy as possible.

Modularity and openness

The rePowder platform has a modular design. New modules can be added at any time. All connections in the device follow current standards (e.g., ISO-KF), so each customer can create and connect their modules as needed.

One device – many possibilities

The rePowder platform was designed to enable many different types of processes to be performed using a single device, including the preparation of a new composition, alloy homogenization, ultrasonic atomization, suction casting, and further options in development.

Multiple alloys in one day

The device is laboratory-scale, easy to clean, and allows for rapid material changeover. Several atomization processes can be carried out for different alloys on different ultrasonic systems in the course of one day.

Multiple applications

The obtained powder can be used in a variety of technologies, including additive manufacturing, sintering, thermal spraying, catalysis etc.

Recycling

The device allows reprocessing of printed parts or scraps material into powder for further use in the desired application.

Low maintenance costs

The device uses minimal amounts of noble gases (~10 L/min). The cost of a single atomization process is minuscule.

Various capacities depending on specific needs

The ability to produce powder from a few grams (e.g. for small amounts of an alloy or rare and expensive elements) up to several kg per day (when processing wire material or using induction module).

Have some questions about particular features?

If you have questions about specific features or want to explore how the rePowder platform can meet your needs, our team is here to help. Reach out to us for personalized support and detailed insights!

Patented technology
PATENTED TECHNOLOGY

STRONG FOUNDATION OF OUR SOLUTIONS

Strong Patents Behind AMAZEMET’s Technology

Our solutions, including the groundbreaking rePOWDER ultrasonic atomizer, are based on patented technology, which protects their uniqueness and reliability. Our portfolio of over 12 patents worldwide, continues to solidify our position at the forefront of technology. By securing intellectual property, we provide our clients with innovative and trusted technologies that drive progress in industries such as additive manufacturing, powder metallurgy, recycling and more.

OUR CUSTOMERS

Trusted by Innovators Worldwide

AMAZEMET is proud to collaborate with a diverse range of clients who trust our cutting-edge solutions to advance their projects. Explore some of our key partnerships with industry leaders and innovators driving progress in additive manufacturing and materials science.

VIDEOS

Industry leaders about Amazemet

Discover real-world experiences from our clients and partners. Watch videos to learn how AMAZEMET’s innovative solutions have transformed their research, development, and manufacturing processes.

Freemelt ONE & AMAZEMET’s rePOWDER Ultrasonic Atomizer

Colibrium Additive at Formnext 2024 | Jose Greses Exclusively For AMAZEMET

TU Darmstadt & AMAZEMET Magnetocalorics Research

AMAZEMET & f3nice | Matteo Vanazzi | Sustainable Innovation with rePOWDER

COLLABORATION

OUR SCIENTIFIC PARTNERS

Our collaborations drive innovation and push the boundaries of materials science. Meet AMAZEMET’s trusted academic partners who play a key role in advancing our research and technological developments. Together, we shape the future of additive manufacturing and beyond.

rePOWDER

Frequently asked questions

Find answers to the most commonly asked questions about rePOWDER. If you can’t find the information you’re looking for, feel free to contact us directly.

Can additional measurement instruments be installed on the system?2025-01-28T15:01:46+01:00

Yes, the platform supports additional sensors and instruments, such as oxygen sensors and cameras. Customers can integrate their own instruments after consulting AMAZEMET.

How do I collect the powder after processing? Do I need special equipment?2025-01-28T15:01:46+01:00

Powder is collected in airlock containers or directly in the chamber using antistatic brushes. For reactive powders, fireproof vacuum cleaners or specialized containers are recommended.

Can I perform continuous atomization?2025-01-28T15:01:47+01:00

Yes, continuous atomization is possible with appropriate feeding systems, such as automatic bar feeders (up to 2 meters) and continuous wire atomization for diameters of 1.2–2.4 mm.

How durable are the key components, like the sonotrode?2025-01-28T15:01:47+01:00

The sonotrode and other components are highly durable, with lifespans dependent on material properties and operational parameters. Proper use ensures over 30 hours of continuous operation for the sonotrode.

Can the system handle multiple feedstock shapes simultaneously?2025-01-28T15:01:47+01:00

Yes, the system supports various feedstock forms, including powders, ingots, wires, and scrap, provided they fit the feed mechanism and melting zone. Automatic feeders are available for wire and bars.

How do I clean the device and recirculation system?2025-01-28T15:01:47+01:00

Cleaning involves vacuuming residual powder, wiping down surfaces with isopropyl alcohol, and using dust-free paper. Specialized equipment like fireproof vacuum cleaners is recommended for reactive materials.

How long does it take to change the sonotrode or materials?2025-01-28T15:01:47+01:00
  • Sonotrode: 20–30 minutes.
  • Material: 2–4 hours for full material change, including purging and cleaning.
Additional measurement instruments, is there any possibility to install other instruments according to our needs, tests and processes? Or only those listed.2024-11-18T01:30:38+01:00

rePowder platform is an open system thus additional measurement instruments can be installed. The system is designed to be flexible, allowing integration with various sensors and measurement devices to meet specific process requirements.

What is the average time of changeover?2024-11-18T01:25:59+01:00
  • In means of changing used sonotrode while working on the same material: The changeover time for the sonotrode or gasket typically takes around 20-30 minutes, depending on the operator’s familiarity with the system and the complexity of the setup.
  • In means of changing material changeover: Changing materials may take longer, around 2-4 hours, as it involves purging the system of the previous material, cleaning the equipment, and setting up for the new material.
Cleaning the device, cleaning the recirculation system, how does it look like, how long does it take, what media should I use for cleaning?2024-11-18T01:26:43+01:00

Cleaning the device and recirculation system typically involves using the vacuum cleaner dedicated to metallic powders, followed up with isopropyl alcohol cleaning using dust free paper. The cleaning process can take anywhere from 2 to 4 hours, depending on the level of residue.

Feedstock, is there any possibility I could do a continuous atomization process?2024-11-18T01:27:29+01:00

Yes, continuous atomization is possible with the appropriate feedstock delivery system. By incorporating a continuous feeder and maintaining a steady state of molten material, the process can run continuously, improving efficiency and throughput. AMAZEMET has currently to perform continuous wire atomization which can employ wires between 1,2 to 2,4 mm in diameter.

Are there any possibilities for custom upgrades for our needs in the future? If so then how would it look like?2024-11-18T01:28:32+01:00

Yes, custom upgrades are possible. We offer a modular platform that allows for the addition of new features and capabilities as your needs evolve. This might include enhanced control systems, additional sensors, or even new atomization technologies. We work closely with customers to develop these upgrades to ensure they meet specific operational requirements.

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