Spherical Tungsten-molybdenum Alloy Powder For 3D Printing

Spherical tungsten-molybdenum alloy powder is a ball-shaped powder made from the transition metals tungsten and molybdenum, which is suitable for 3D printing (additive manufacturing) due to its good flowability, high bulk density and compact density, and low surface roughness.

Tungsten and molybdenum alloy parts produced using additive manufacturing technology have higher quality and more complex shapes than tungsten and molybdenum parts made using traditional technology, making them more suitable for use in extreme environments. However, 3D technology also requires a higher level of raw material properties than conventional technology, i.e., in addition to a high degree of sphericity, it must also have a low impurity content, low oxygen content and moderate particle size, among other characteristics.

Compared with non-spherical powder, spherical powder mobility is better, so it is more conducive to additive manufacturing technology in the powder feeding and powder spreading process, mainly reflected in the uniformity of the powder feeding rate and powder spreading does not appear to be the case of accumulation.

Higher purity spherical tungsten and molybdenum powder can effectively avoid the volatilization of some of the low melting point elements during 3D printing, which in turn leads to products prone to fracture, cracks, deformation, sandwich, expansion and other defects.

Powders with high oxygen content are prone to be reduced during the 3D printing process, which in turn leads to a decrease in product quality.

Powders with moderate particle size and narrow particle size distribution have better fluidity and lower oxygen content, so they are conducive to printing products with higher overall performance. In general, the particle size of the powder is too small, the fluidity of the powder is poor and the oxygen content is higher, the print out of the texture of the product is poor, and if the particle size of the powder is too large, the same will increase the roughness of the product.