Produces irregular powder with a broad size distribution. Suitable for refining, pressing, sintering and other cost-sensitive powder applications.
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CDOCAST vacuum powder making machines combine induction melting, inert-gas protection and high-pressure water atomization to produce metal powder for refining, powder metallurgy, pressing, sintering and selected binder-jet applications.
A vacuum powder making machine is a metal atomization system that melts gold, silver, copper or another compatible alloy, controls the molten stream through a tundish nozzle, and breaks the stream into fine droplets with high-pressure water. The droplets cool rapidly and are collected as irregular metal powder.
Vacuum and inert-gas protection can reduce oxygen exposure during melting and discharge. The resulting water-atomized powder is commonly selected when production cost, output and surface area are more important than the high sphericity required for laser powder-bed 3D printing.
If the required output is larger grains rather than powder, compare the CDOCAST metal granulator series.
Produces irregular powder with a broad size distribution. Suitable for refining, pressing, sintering and other cost-sensitive powder applications.
Produces more spherical, lower-oxygen powder for demanding additive-manufacturing applications. It uses a separate machine configuration.
Select the structure according to metal type, melting temperature, batch capacity, powder application and workshop layout.
A cost-conscious water atomization module for laboratories and precious metal refining workshops. It converts a controlled molten stream into fine, irregular powder that provides more surface area for downstream chemical dissolution and leaching.
Four integrated models—CDO-PM10, CDO-PM20, CDO-PM30 and CDO-PM50—cover capacities from 10 to 50 kg. The series can be configured for gold, K-gold, silver, copper, iron and other compatible metals or alloys according to their melting temperature and powder requirements.
The tilting furnace arrangement provides controlled transfer of high-temperature molten metal into the atomization tundish. It can be configured for platinum, palladium, iron, stainless steel and other high-temperature metals or alloys after confirming the melting and powder-making process.
The elevated platform uses gravity to transfer molten metal into a larger atomization chamber. Five models—CDO-LPM50 through CDO-LPM500—support high-output powder production for gold, silver, copper, platinum, iron, stainless steel and a broad range of other metals. The furnace and atomization system are matched to the actual metal.
For spherical, lower-oxygen powder used in demanding metal additive manufacturing, select CDOCAST gas atomization equipment rather than the water atomization models on this page.
View the gas atomization machine and full parameters
The final particle distribution depends on the metal, melt condition, nozzle, flow rate, water pressure and downstream classification.
The selected metal or alloy is melted and brought to the process temperature required for stable discharge.
Vacuum or nitrogen/argon protection can reduce oxygen contact during melting and transfer.
The tundish and bottom nozzle control the molten-metal flow entering the atomizer.
High-pressure water jets break the liquid stream into rapidly cooling droplets.
The water-powder mixture settles or passes to a collection and filtration system.
Wet powder is dried and classified when a narrower mesh range is required.
For additional process background, read metal powder atomization methods and equipment selection.
Compare capacity, power, process pressure and installation size across the integrated and platform water atomization series.
| Specification | CDO-PM10 | CDO-PM20 | CDO-PM30 | CDO-PM50 |
|---|---|---|---|---|
| Power | 20 kW | 30 kW | 40 kW | 45 kW |
| Voltage | 380 V, 3 phase, 50/60 Hz | |||
| Application metals | Gold, K-gold, silver, copper, iron and other compatible metals or alloys | |||
| Melting capacity | 10 kg copper | 20 kg copper | 30 kg copper | 50 kg copper |
| Maximum temperature | 1600°C | 1600°C | 1600°C | 1600°C |
| Melting time | 10–15 min | 15–20 min | 20–25 min | 20–30 min |
| Powder size range | 100–1000 mesh | |||
| Protective gas | Nitrogen / argon | Nitrogen / argon | Nitrogen / argon | Nitrogen / argon |
| Atomization method | Water atomization | |||
| Pump power | 37 kW | 37 kW | 37 kW | 37 kW |
| Water pressure | 10–15 MPa | 10–15 MPa | 10–15 MPa | 10–15 MPa |
| Dimensions | 1360 × 1220 × 2090 mm | 1450 × 1290 × 2090 mm | ||
| Weight | 1050 kg | 1100 kg | 1150 kg | 1200 kg |
| Specification | CDO-LPM50 | CDO-LPM100 | CDO-LPM200 | CDO-LPM300 | CDO-LPM500 |
|---|---|---|---|---|---|
| Voltage | 380 V, 3 phase, 50/60 Hz | ||||
| Furnace power | 70 kW | 90 kW | 110 kW | 160 kW | 250 kW |
| Melting capacity | 50 kg copper | 100 kg copper | 200 kg copper | 300 kg copper | 500 kg copper |
| Melting time | 20–30 min | 20–40 min | 30–40 min | 30–40 min | 40–50 min |
| Platform size | 4 × 5 × 2.5 m | 5 × 5 × 2.8 m | 5 × 5 × 3 m | 5 × 5 × 3 m | 5.8 × 5 × 3.2 m |
| Powder size range | 100–1000 mesh | 100–1000 mesh | 100–1000 mesh | 100–1000 mesh | 100–1000 mesh |
| Atomization method | Water atomization | ||||
| Pump power | 55 kW | 55 kW | 65 kW | 65 kW | 75 kW |
| Water pressure | 15–23 MPa | 15–23 MPa | 15–23 MPa | 15–23 MPa | 15–23 MPa |
| Application metals | Gold, silver, copper, iron, stainless steel, platinum and other reviewed high-temperature metals | ||||
Capacities are stated using copper as the reference metal. Final capacity, electrical configuration and powder distribution should be confirmed using the actual alloy and application.
Core functions are presented as product capabilities rather than a general purchasing checklist.
The induction furnace, tundish, atomizer and collection system are matched for one controlled process.
Protected melting and discharge help reduce oxidation for compatible metals and alloys.
Water pressure, nozzle aperture and molten-metal flow influence the resulting particle-size range.
Selected configurations can be customized for powder atomization or larger metal granules.
The touch-screen interface coordinates heating, protection and operating sequences.
The 10–50 kg series reduces floor-space requirements compared with a full platform line.
The 50–500 kg series supports higher batch weights and larger atomization chambers.
Filter, drying and screening equipment can be matched to the required downstream process.
Water atomization normally produces irregular particles with comparatively rough surfaces and a wider particle-size distribution than inert-gas atomization. This can be useful when surface area, compaction or economical high-volume production is the main requirement.
Download the CDOCAST powder making machine catalog for equipment structures and model information.
Keep the same nine questions in Rank Math FAQ Schema so the visible content and structured data remain consistent.
To recommend the correct atomization process, furnace structure and machine capacity, please provide:
These details allow CDOCAST to determine whether an integrated, tilting, platform or gas atomization system is suitable. Sample powder production can be discussed when application verification is necessary.
The total connected load and actual energy use depend on the selected model. A representative production cycle can include:
Not every component operates at full load for the complete cycle. The final electrical load, cable size and transformer requirement must be calculated from the selected furnace, pump, chiller and auxiliary equipment.
CDOCAST supplies CE certification as the standard certification for this equipment. UL certification is not included as a standard option for customized powder atomization machinery because certification scope, cost and lead time depend on the final electrical and mechanical configuration.
If the project requires a specific national standard, third-party inspection or documentation package, provide the requirement before the machine design is confirmed.
Yes. Copper powder size—and the particle distribution of other compatible metals—can be influenced by several coordinated settings:
The machine produces a distribution rather than one exact particle size. A separate screening or classification machine is required when the customer needs a narrow fraction such as 150–200 mesh.
CDOCAST matches the furnace and atomization structure to the melting temperature, fluidity, oxidation sensitivity and production capacity of the target metal:
Final compatibility must be confirmed using the exact alloy composition and required powder specification.
The standard water atomization specification lists a typical overall range of 100–1000 mesh. The actual yield within each mesh fraction depends on the metal, melt temperature, water pressure, atomizer design and molten-metal flow rate.
Water atomization does not produce one exact particle size. After collection and drying, the powder should be screened or classified when a controlled fraction such as 100–200 mesh or 150–200 mesh is required. Out-of-range material can often be returned for remelting.
CDOCAST should review the workshop drawing, floor loading, power supply, water circulation, drainage and ventilation before the final layout is approved.
Water atomization uses high-pressure water jets to break the molten-metal stream. It normally produces irregular particles with a rougher surface, a wider size distribution and higher oxygen content. Its advantages are lower production cost, high output and suitability for refining, pressing, sintering and conventional powder metallurgy.
Gas atomization uses high-velocity nitrogen or argon in a sealed system. It normally produces more spherical powder with better flowability and lower oxygen content, making it more suitable for laser 3D printing, aerospace alloys and other applications with strict powder-shape requirements.
The equipment on this page is primarily water atomization equipment. CDOCAST also supplies a separate vacuum gas atomization powder making machine. The correct process should be selected according to particle shape, oxygen limit, application and budget.
Send the target alloy, batch capacity, daily output, required mesh distribution, particle shape, oxygen limit, application and factory voltage so the CDOCAST team can match the correct water or gas atomization process.
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The process of making metal powder by water atomization has a long history. In ancient times, people poured molten iron into water to make it explode into fine metal particles, which were used as raw materials for making steel; There are also people who pour molten lead water directly into the water to make lead pills. The process principle of making alloy powder by water atomization is the same as that of making water-burst metal liquid in ancient times, but modern technology has greatly improved the efficiency of crushing and manufacturing particles
To make metal alloy powder by high-pressure water atomization method, first, melt the raw metal in the melting furnace, and then the molten gold must be overheated for about 50 degrees and then injected into the tundish. Start the high-pressure water pump before the injection of metel solution, and let the high-pressure water atomization device start the workpiece. The metel liquid in the tundish enters the atomizer through the nozzle at the bottom of the tundish through the beam flow.
The atomizer is the key part for producing metal alloy powder by high-pressure water mist. The atomizer is related to the metal powder-making efficiency, Under the action of the high-pressure water from the atomizer, the molten metal liquid is continuously broken into fine droplets, which fall into the cooling liquid in the water tank and solidify into alloy powder。
In the traditional high-pressure water atomization process for producing metal powder, the metal powder can be collected continuously, but a small amount of metal powder is lost with the atomized water， In the process of producing alloy powder by high-pressure water atomization, the atomized product is concentrated in the atomization device, and then precipitated and filtered (it can be dried if necessary, and generally sent directly to the next process。
A complete set of equipment for producing metal alloy powder by high-pressure water atomization is composed of the following parts:
1:For the melting part, the medium frequency induction melting furnace is the best choice. The capacity of the furnace depends on the processing capacity of the metal powder, we have furnace capacity from 2kg to 100kg per batch.
2: The atomization part, the equipment in this part is non-standard equipment, which should be designed and arranged according to the site conditions of the manufacturer, mainly including the tundish: when the tundish is produced in winter, it needs to be preheated;
Atomizer: the atomizer will come from high-pressure water, The high-pressure water of the pump impacts the metal liquid from the tundish at a predetermined speed and angle, breaking it into metal droplets.
Under the same water pump pressure, the amount of fine metal powder after atomization is related to the atomization efficiency of the atomizer; the atomization cylinder: it is the place where the alloy powder is atomized, crushed, cooled and collected.
3:In order to prevent the ultra-fine alloy powder from being lost with water, the obtained alloy powder should be left for a period of time after atomization, and then placed in the powder collecting box.
4:Post-processing part: powder collecting box: used to collect the atomized alloy powder and separate and remove excess water; drying furnace: dry the wet alloy powder with water;
screening machine: sieve the alloy powder, Out-of-specification coarser alloy powder can be re-melted and atomized as the return material
Integrated Type Powder Making Machine
| Model | CDO-PM10 | CDO-PM20 | CDO-PM30 | CDO-PM50 |
| Power | 20 KW | 30 KW | 40 KW | 45 KW |
| Voltage | 380V, 3 phase, 50/60Hz | |||
| Application metal | Gold、K-Gold、Silver、Copper、Bronze、Zinc、Tin、etc. | |||
| Melting capacity | 10 kg (Copper) | 20 kg (Copper) | 30 kg (Copper) | 50 kg (Copper) |
| Max temperature | 1600 ℃ | 1600 ℃ | 1600 ℃ | 1600 ℃ |
| Melting time | 10-15 min | 15-20 min | 20-25 min | 20-30 min |
| Powder size range | 100-1000 mesh | |||
| Protective gas | Nitrogen / argon | Nitrogen / argon | Nitrogen / argon | Nitrogen / argon |
| Atomization method | Water atomization | |||
| Pump power | 37 KW | 37 KW | 37 KW | 37 KW |
| Water pressure | 10-15Mpa | 10-15Mpa | 10-15Mpa | 10-15Mpa |
| Dimension | 1360*1220*2090 mm | 1450*1290*2090 mm | ||
| Weight | 1050 kg | 1100 kg | 1150 kg | 1200 kg |
Platform Type Powder Making Machine
| Model | CDO-LPM50 | CDO-LPM100 | CDO-LPM200 | CDO-LPM300 | CDO-LPM500 |
| Voltage | 380V, 3 phase, 50/60Hz | ||||
| Furnace power | 70 KW | 90 KW | 110 KW | 160 KW | 250 KW |
| Melting capacity | 50 kg (Copper) | 100 kg (Copper) | 200 kg (Copper) | 300 kg (Copper) | 500 kg (Copper) |
| Melting time | 20-30 min | 20-40 min | 30-40 min | 30-40 min | 40-50 min |
| Platform size | 4*5*2.5 m | 5*5*2.8 m | 5*5*3 m | 5*5*3 m | 5.8*5*3.2 m |
| Powder size range | 100-1000 mesh | 100-1000 mesh | 100-1000 mesh | 100-1000 mesh | 100-1000 mesh |
| Atomization method | Water atomization | ||||
| Pump power | 55 KW | 55 KW | 65 KW | 65 KW | 75 KW |
| Water pressure | 15-23 MPa | 15-23 MPa | 15-23 MPa | 15-23 MPa | 15-23 MPa |
| Applacation metal | Gold, Silver, Copper, Iron, Stainless steel, Platinum and other high temperature metals | ||||
1. Adopt the electromagnetic induction heating principle with the feature of rapid melting time and high production efficiency， The melting temperature rises quickly, the production efficiency is high, and the particle size distribution is good.
2. With the ability to 24-hour continuously work, can meet the needs of customers with different production output.
3. Come with a vacuum Pump design, the whole granulation is carried out in the vacuum environment to minimize oxidation.
4. CDOCAST vacuum powder making machine can be used for both granulation and pulverizing. With one machine you can do both purposes.
5. This Vacuum powder making machine covers a very small production area and is easy to operate. No engineer needs to sent to do the on-site installation.
6. The Vacuum powder making machine with different capacity can be customized according to customer’s demand, and the maximum capacity can reach 100 kg per batch.
7. The brand-new integrated furnace body structure design helps to improve the performance of powder making.
8. The metal smelting process can be protected by inert gas to reduce oxidation.
Water atomized powder is a metal or alloy powder prepared by high-pressure water atomization technology. It is widely used in powder metallurgy, 3D printing, magnetic materials, welding materials and other fields. Its core features are as follows:
1. Particle morphology and structure
-Irregular shape: During the water atomization process, the molten metal droplets are rapidly cooled under the impact of high-pressure water flow, forming irregular shapes (such as spherical, flaky or dendritic) with high surface roughness.
-Surface oxide layer: Due to the contact between water and high-temperature metal, an oxide layer is easily formed on the surface of the powder (subsequent reduction treatment is required).
-Satellite powder and hollow powder: Some particles may form “satellite powder” due to collision and adhesion, or “hollow powder” may be formed due to the failure of internal gas to escape.
2. Particle size distribution
-Wide range: The particle size of water atomized powder is usually distributed between 10~150μm, which can be controlled by adjusting parameters such as water pressure and nozzle design.
-Suitable for coarse powder needs: Compared with gas atomized powder (finer and more spherical), water atomization is more suitable for scenes with looser particle size requirements (such as MIM metal injection molding).
3. Chemical composition and properties
-High oxygen content: Oxygen is easily introduced during the water atomization process (H₂O decomposition), and the oxygen content needs to be reduced by vacuum annealing or hydrogen reduction (for example, the oxygen content of iron-based powder can be reduced to less than 0.3%).
-Alloy flexibility: A variety of alloy powders can be prepared (such as stainless steel, tool steel, copper alloy, etc.), but highly active metals (such as titanium and aluminum) require special protection.
4. Process efficiency and cost
-High production efficiency: Water atomization equipment is simple, suitable for large-scale continuous production, and the cost is significantly lower than gas atomization.
-Low energy consumption: No inert gas protection is required, only high-pressure water pumps and cooling systems are required, and energy consumption costs are lower.
5. Application
-Powder metallurgy: automotive parts (gears, bearings), cemented carbide premixed powder.
-Magnetic materials: Preparation of Sendust soft magnetic powder.
-Welding and coating: used as welding rods and thermal spraying materials.
-3D printing (some areas): Binder jetting (Binder Jetting) with low requirements for powder sphericity.
6. Comparison of advantages and disadvantages
| Advantage | Disadvantage |
| Low cost, suitable for large-scale production | Irregular powder shape, poor fluidity |
| Can be used for high melting point alloys | High oxygen content, requires subsequent treatment |
| Simple operation | Low fine powder yield (<20μm) |
7. Comparison with other atomization technologies
-Gas atomization: finer powder, high sphericity, low oxygen content, but high cost, suitable for high-end fields such as aerospace, 3D printing, etc.
-Centrifugal atomization: uniform particles but complex equipment, mostly used for specific alloys (such as titanium powder).
-Water atomization: the king of cost-effectiveness, suitable for industrial applications that are not demanding on cost and shape.
The core competitiveness of water atomized powder lies in low cost and high production capacity, especially suitable for fields with high tolerance for powder shape and oxygen content. If higher purity or sphericity powder is required, gas atomization or plasma atomization process can be considered. The actual selection needs to be comprehensively evaluated in combination with the application scenario, cost budget and post-processing capabilities.
