What are the requirements for metal raw material powder for 3D printing?
Release time:
2019-04-01 10:04
Author:
Compared with traditional subtractive manufacturing methods, 3D printing causes almost no waste of metal materials, and this "additive manufacturing" direct forming feature greatly reduces equipment problems during the production process.
Metal powder material is the raw material for metal 3D printing. The basic properties of its powder have a great relationship with the quality of the final molded product. The requirements for metal 3D printing powder mainly include chemical composition, particle shape, Particle size and particle size distribution, fluidity, recyclability and other aspects.
The main chemical components of raw materials include metal elements and impurities. The main metal elements commonly used are Fe, Ti, Ni, Al, Cu, Co, Cr and precious metals Ag, Au, etc. The impurities include Si, Mn, C, S, P, O, etc., as well as other impurities mixed from raw materials and powder production, water and other gases adsorbed on the surface of the powder, etc.
During the molding process, impurities may react with the matrix, change the properties of the matrix, and have a negative impact on product quality. The presence of dopants will also cause uneven melting of the powder, which can easily cause internal defects in the product. When the oxygen content of the powder is high, the metal powder is not only easily oxidized and forms an oxide film, but also causes spheroidization, affecting the density and quality of the product.
Therefore, it is necessary to strictly control the impurities and doping of raw material powder to ensure product quality. Therefore, metal powder for 3D printing needs to use metal powder raw materials with higher purity.
If you want to know more about 3D printing, 3D printing models, 3D printing services, and prototype processing industry information, you can browse our website. We will release some relevant information regularly.
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