The Main Preparation Methods of 3D Printing Metal Powder

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3D printing represents a new form of printing technology. 3D printing metal powder, the most important material for 3D-printing metal parts, is 3D printing. The main 3D powder materials currently available are nickel-titanium alloy powder Steel, cobalt, chrome alloy, stainless, industrial steel and bronze alloy.
3D printing of metal powder requires good plasticity.

Three types of preparation for 3D printing metal powder are available: reduction method, electrolysis, grinding method, and atomization method. Presently, China’s two most common pulverizing processes are the argon-atomization method and the plasma rotating electrode method.
1. Argon atomization
Argon atomization is a powder-making method that uses the fast-flowing argon gases flow to impact the metallic liquid, break it up into fine particles and then condense it into a solid powder.

2. Plasma rotating electrode method
Plasma state is also known as the fourth state. The process of plasma rotating electro atomization (prep) is simple: The metal or alloy is made into a consumable, then the liquid film melts under coaxial plasma arc heating source. The liquid film is then thrown away at high speed to form droplets. The shear stress further breaks down the molten liquid droplet. Finally, the surface tension causes the molten droplet to cool and become spherical powder.

The following are some of the benefits of plasma rotating electrode metal powder:

High sphericity with a smooth surface and high loose densities, which means that the uniformity of powder spread is excellent and printing products have a high density.

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