When we use SLM technology to print metal, the minimum thickness of powder layer can be 10 μ M?

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Selective laser melting (SLM) technology is one of the important technologies in the field of metal AM. It uses a high-energy density laser as the heat source, the laser spot is concentrated in the range of 20-100 μm, and the sphere with the diameter of the molten particle between 5-50 μm is selected. Metal powder can obtain complex metal components with high degrees of freedom, and produce nearly 100% high-density parts with surface roughness up to 20-30 μm and dimensional accuracy up to 20-50 μm. Under normal circumstances, it is between 0.02 and 0.05. 0.01mm requires more precise control and can be done, but the difficulty will be greatly increased.