The Main Preparation Methods of 3D Printing Metal Powder
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Update time : 2022-02-14 15:56:12
3D printing is a new type of printing technology. 3D printing metal powder is the most important raw material for 3D printing metal parts. At present, the main 3D printing powder materials are nickel-titanium alloy powder, cobalt-chromium alloy, stainless steel, industrial steel, bronze alloy, titanium alloy and nickel-aluminum alloy, etc.
3D printing metal powder needs to have good plasticity and meet the requirements of fine powder particle size, narrow particle size distribution, high sphericity, good fluidity and high bulk density.
The preparation methods of 3D printing metal powder can be mainly divided into reduction method, electrolysis method, grinding method, atomization method, etc. At present, the two most advanced pulverizing processes commonly used in China are argon atomization method and plasma rotating electrode method.
1. Argon atomization
Argon atomization method is a powder making method that uses the fast flowing argon gas flow to impact the metal liquid, break it into fine particles, and then condense into solid powder.
2. Plasma rotating electrode method
Plasma state is called the fourth state of matter. The pulverizing process of plasma rotating electrode atomization (prep method) can be simply described as: the metal or alloy is made into consumable electrode, the end of consumable electrode melts under the action of coaxial plasma arc heating source to form liquid film, and the liquid film is thrown out at high speed to form droplets under the action of rotating centrifugal force, The molten droplet rubs with the inert gas (argon or helium) in the atomization chamber and is further broken under the action of shear stress, and then the molten droplet cools and solidifies into spherical powder under the action of surface tension.
The metal powder produced by plasma rotating electrode method has the following advantages:
High sphericity, smooth surface, good fluidity and high loose density, so the uniformity of powder spreading is good and the density of printing products is high; The powder has small particle size, narrow particle size distribution, low oxygen content, less / no spheroidization and agglomeration during printing, good melting effect, high product surface finish, and the consistency and uniformity of printing can be fully guaranteed; There are basically no hollow powder and satellite powder, and there will be no defects such as air gap, entanglement and precipitation pores and cracks caused by hollow balls in the printing process.
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional 3D printing metal powders supplier with over 12 years experience in chemical products research and development. We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
If you are looking for high quality 3D printing metal powder, please feel free to contact us and send an inquiry.
