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Water atomization is one of the important preparation methods for 3D printing metal powder

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technology allows for 3D printing. Its most notable advantage is the ability to generate parts in any shape directly from computer graphics data, without any machining and molds. This greatly reduces the product development cycle while increasing productivity and reducing costs. Metal powder, the main raw material in 3D printing of metal components, has caught people's interest. 3D Printing Metal Powder is the most valuable and important part of 3D Printing Industry Chain of Metal Parts.


Metal powder preparation

The metal powder preparation processes can currently be divided into the following categories: reduction method (also known as a reduction process), electrolysis method (also known as a carbonyl decomposition technique), grinding method (also called atomization technique), etc. The preparation process determines the type of metal powder. In the powder metallurgy sector, powders produced by reduction, atomization, and electrolysis are the most commonly used raw materials. The atomization technique can be used to make alloy powder. A modern atomization procedure can also control powder shape. The development of atomization cavities has greatly improved the efficiency, and the atomization technique is gradually becoming the most popular method for producing powder. The atomization technique meets the specific requirements of 3D printed consumable metals powder. The atomization process is a way to mechanically reduce molten metal particles down to less than 150mm.

Water atomization

The water atomization process is one of the cheapest methods of production for atomized powder. The atomization media water is cheap, easily available and has excellent atomization. The domestic water atomization technique is used primarily to produce steel, matrix powders for diamond tools, prealloy powders for oil-bearing rollers, powders for hard-surface technology, and nickel and iron-based magnet powders. The specific heat of water being much greater than the gas's, it is possible that the metal droplets will solidify and become irregular during the atomization. Water will react with other metals or alloys that have a high level of activity. In addition, contact with the water during atomization will increase the amount of oxygen in the powder. This limits the use of water atomization for metal powders of high sphericity with low oxygen contents.

(aka. Technology Co. Ltd., a global leader in chemical material manufacturing and supply with over 12 year's experience in providing high-quality nanomaterials and chemicals. Our Metal Powder is of high purity with fine particles and low impurity levels. Contact us if you need to.

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What are the main aerosol methods for producing metal alloy powders

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Gas atomization, or gas atomization, is a method used to create metal alloy powders. Gas atomization works by breaking up the liquid metal stream with high-speed airflow into small drops and then solidifying it into powder. Powder preparation has been a major development area for special alloy and high-performance powders due to its benefits of high purity and low oxygen content. It also offers controllable particle size, low cost and high sphericity. The following are some representative gas atomization techniques for powder production:
Laminar flow atomization is a technology that uses a laminar atomization flow.

The German company etc. proposed a technology for laminar atomization. This technology offers significant improvements over conventional nozzles. The improved atomizing node has high atomization efficiencies, narrow powder size distributions, and cooling speeds of 106-107K/s. The copper, aluminum and 316L stainless-steel, etc., can be atomized under a 2.0MPa atomization force. Ar or Nitrogen is used to atomize the powder, with an average particle diameter of 10mm. It is a process that produces most metal powders and has a low gas usage. The technical control of this process is difficult. It is also unstable. And the output (metal mass flow rate less than 1kg/min), is low. This is not suitable for industrial production.

Ultrasonic tightly combined atomization technology

Close-coupled ultrasonic technology optimises the structure of a ring-slot nozzle to increase the mass flow rate and outlet velocity. When atomizing high-surface energy metals like stainless steel, the average size of the particles can reach around 20mm and the standard deviation can be as little as 1.5mm.

The technology can be used to produce amorphous, fast cooling powders. The current development of this equipment shows that it is the next step in the development of tightly coupled technology. It can be applied to a wide range of materials such as alloy powders and micro stainless steel.

Atomization of hot gases

In the last few years, an American company has done a lot research on the mechanism and effect of hot-gas atomization. In the United States, a company heated gas to 200-400degC under pressure of 1.72MPa to atomize a silver alloy and tin alloy. It found that the particle size and standard deviation decreased as the temperature increased. The hot gas atomization process is more efficient than traditional atomization, consumes less gas, and can be easily implemented on conventional atomization machines. It's a promising technology.

(aka. Technology Co. Ltd., a reputable global chemical material manufacturer and supplier with over 12 year's experience in providing super-high-quality chemicals. Metal alloy powders manufactured by our company are high in purity, have fine particles, and contain low impurities. Contact us if you need to.

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What is 3D Printing Metal Powder?

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Metal 3D Printing is a 3D technology that uses metal powders to directly print metal parts. This is also called Selective Laser Melting. 3D printed metal powders need to have good plasticity.
Metal powders are used in 3D printers for stainless steel, aluminum, cobalt chromium alloys, copper alloys, titanium alloys, and nickel alloys. Iron base alloy is the largest and most important metal material in engineering technology. It is widely used for the creation of complex structures.
The performance of the final product will depend on the type of metal powder and 3D printing method used.

Stainless-steel powder
Low-cost metal printing materials can be quickly and economically used for small batches of complex industrial components manufacturing.

Aluminium alloy powder
AlSi12Mg is the most commonly used aluminum alloy in metal 3D printers. Aluminosilicate 12 (lightweight additive) is used to create metal powders with excellent thermal properties. Combining silicon and magnesium gives aluminum alloys greater strength and stiffness. They are suitable for thin walls, complex geometry, and applications with high thermal properties. Aluminum alloy is an industry staple due to its low density, high specific strengths, close to or greater than high-quality steel and good plasticity. 3D printing of aluminum alloy has been shown to produce compact parts with small structures, similar to casting, or better than casting molding parts. The cost of 3D printing is also reduced by as much as 30% compared to traditional process parts.

Cobalt chrome alloy powder
It is used for printing all kinds of artificial joints, plastic surgery implants and other dental procedures.

Copper alloy Powder
Copper has excellent thermal conductivity as well as electrical conductivity. It can be used in thermal management applications to combine design degrees for complex internal structures and conformal cool channels.

Titanium alloy powder
It is widely used within the aerospace industry. 3D printing offers many benefits. One example is the ability to replace a solid body with a complex, reasonable structure. The result is a product that is lighter and has better mechanical properties. This will not only reduce costs but also allow for lighter production.

Nickel alloy pulver
Nickel alloy's oxidation and corrosion resistance make it ideal for harsh environments such as high temperature and high stress. To protect the internal nickel alloy from corrosion, the alloy's surface will passivate when it is heated. Nickel alloys have good mechanical properties across a wide range temperature ranges.

Can powdered materials be used in 3D printing?
3D data can be used to control laser beams of high energy to melt metal matrix locally and then sinter it to form solid parts.

How do you make 3D printing metal powder?
Solid-state reduction, electrolysis and chemical are the most common methods to produce metal powders.
Many manufacturers use electrolysis or reduction methods to make elemental metal particles. However, they are not suitable in making alloy powders.
Alloy powder can be made using the atomization method.
Another way to make powdered metals is by electrolysis. Different metals can either be made spongy, or powdered by selecting the right electrolyte composition and temperature, concentration, as well as current density. These can then be washed or dried and reduced to a powdered form. This process is used to make extremely pure metal powder. This method is used to make highly conductive copper powder.
Atomization is a mechanical method of pulverizing the molten steel into pieces smaller than 150mm. According to the classification for crushing metal melt, the atomization process includes the second flow, centrifugal and ultrasonic atomizations, as well as vacuum atomization. Each of these atomization techniques has their own unique characteristics, and they have been used successfully in industrial production. Water-gas atomization is one of the most preferred industrial methods for making metal powder. It has simple equipment and processes, as well as low energy consumption.

Performance requirements of metal powder for 3D printing
1. Purity
Ceramic inclusions can adversely affect the performance of final products. They also have a high melting points, which makes it difficult to sinter. Powders must not contain ceramic inclusions. You must also control the nitrogen and oxygen levels. Powder preparation is done mainly using the atomization method. Powder with a large surface area is easy to oxidize. This index is required by customers for special applications such as aerospace. The superalloy and titanium alloy powder oxygen contents are 0.006%-0.018%, 0.007%-0.013%, and the powder oxygen content of stainless steel is 0.010%-0.025%.

2. Powder fluidity, loose density
The powder's fluidity directly influences the uniformity of powder spreading as well as the stability of powder feeding. Powder morphology, bulk density and particle size distribution are all factors that affect the fluidity. The fluidity of powder is determined by how regular and small the particles are. Fluidity increases with increasing relative density and increased particle density. The fluidity of powder is also reduced by the adsorption gas and water on its surface.

3. Powder particle size distribution
Different 3D printing equipments and forming processes have different requirements for powder size distribution. The most commonly used powder particle sizes in metal 3D printing are between 15-53mm (fine) and 53-105mm ("coarse"). There are several energy sources that can be used to select the metal powder size for 3D printing. Because of the fine focal spot and ease of melting fine powder, printers using laser energy are suitable to print 15-53mm-sized powder. A powder-laying printer that uses electron beam as an energy source has a slightly larger focal spot which makes it more suitable for melting powdery materials. It can be used for coarse powder sizes 53 to 105mm. As consumables for coaxial powder feeders, powders with particle sizes between 105 to 150mm are possible.

4. Powder morphology
The powder preparation method has a direct impact on the morphology. The shape of powder particles when metal gas or liquid is turned into powder is spherical. Powder particles that are made by aqueous electrolysis are dendritic. Generally speaking, higher sphericity means better fluidity for powder particles. This makes it easier to feed and lay powder during 3D printing.

3D printing metal powder supplier
Technology Co. Ltd. is a trusted global supplier of chemical materials and manufacturer. It has over 12 years experience in producing super high-quality chemicals.
Send us an inquiry if you're looking for high-quality 3D printing metal powder. (brad@ihpa.net)

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3D Printing Metal Powder Properties

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Currently, 3D printing metal powder materials include stainless steel, die steel, nickel alloys, titanium alloys, cobalt-chromium alloys, aluminum alloys and bronze alloys.
Iron-based alloys are the most commonly used metal material in engineering technology. They are most commonly used for the formation of complex structures, such a stainless steel 3D printing. This technology is more durable than traditional casting or forging, and it can withstand high temperatures and wear well. It is highly dimensionally accurate and can be used to make a variety of materials. It is extensively used in aerospace and machine manufacturing as well as shipbuilding and automotive.

Titanium alloy's strength and toughness are combined with low specific gravity and corrosion resistance. It is ideal for high-performance aerospace and automotive engineering applications. It is also used for the manufacture of biomedical implant, which are high-modulus, low modulus, and have strong fatigue resistance.

Cobalt and chrome alloys are often used in surgical implant applications such as alloy knee joints and hip joint, alloy artificial joints, and all-metal joints.

Aluminum alloy is one of the most popular non-ferrous metals structural materials in industry. It is very dense, but its specific strength and density are higher than those of high-quality stainless steel. Additionally, its plasticity is excellent. 3D printing of aluminum alloys has been shown to produce parts with dense structures and mechanical properties comparable or better than castings. They can achieve a 22% reduction in quality, while the cost of traditional process parts can be cut by 30%.

Copper alloys exhibit excellent electrical and thermal conductivity. The excellent thermal conductivity of copper in thermal management applications allows for design freedom and the ability to produce intricate internal structures as well as conformal cooling channels.
You can divide the metal powder preparation methods into electrolysis method (reduction method), grinding method (atomization method), and grinding method (grinding method). depending on the preparation method. At the moment, China's two most common powder making methods are the argon-atomization method and plasma rotating electro method.

Tech Co., Ltd. () is a professional 3D printing powder Over 12 years experience in the development and research of chemical products. We accept credit cards, T/T and Paypal payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.

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Resent Products

Recommended product from this supplier.

 Atomized Metal Alloy Powder for MIM and PM

US$ 10-100 / KG

(FOB Price)

50 KG (MOQ)

  • Product Type : Powder
  • Material : Based on Customers' Demand
  • Carbon Content : Based on Customers' Specification
  • Particle Size : 8~100um
  • Tap Density : 3.8~4.9
  • Particle Shape : Sphere