Powder Fluidity And Bulk Density

       

What conditions should metal powder meet to
meet the material requirements of 3D printing? We should consider purity,
powder particle size distribution, powder morphology, powder fluidity and bulk
density. Powder fluidity directly affects the uniformity of powder spreading
and the stability of powder feeding in the printing process.

The fluidity is related to the powder
morphology, particle size distribution and loose density. The larger the powder
particle, the more regular the particle shape and the smaller the proportion of
very fine powder in the particle size composition, the better the fluidity; The
particle density remains unchanged, the relative density increases, and the
powder fluidity increases. In addition, the adsorption of water and gas on the
particle surface will reduce the fluidity of the powder.

Loose density refers to the powder mass per
unit volume when the powder sample is naturally filled with the specified
container. Generally, the coarser the powder particle size, the greater the
loose density. The powder with thickness matching can obtain higher loose
density. The influence of loose density on the density of the final metal
printing product is uncertain, but the increase of loose density can improve
the fluidity of the powder.

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powder, spraying coat powder, or WC based powder, you may search online
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