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selective laser melting (3d printing) (SLM)

Selective Laser Melting( SLM), like Selective Laser Sintering( SLS), is a 3D printing technique for metal printing and prototyping.

In the selective melting process, individual thin layers of the filament, which is the plastic strand containing the metal or ceramic powder, are applied one after the other and fused together with a high- power laser. Fusing the metal powder has the advantage over laser sintering of higher density of the printed object. To prevent contamination of the metal powder with oxygen, the printed object is in a protective atmosphere. For the fusion process, the laser beam of the high-power laser is deflected via mirrors in such a way that the entire print object is exposed to the laser beam. After cooling, the metal powder forms a solid material layer.

3D printing Selective Laser Melting, photo:

3D printing Selective Laser Melting, photo:

The filament can contain ceramic powder in addition to various metal powders of aluminum, titanium, copper and precious metal. The resolution of the print contours is between 50 µm and 100 µm. The finished 3D model has a high density.

3D printing with selective laser melting is used wherever prototypes and small series with low quantities are required. For example, in medical technology and aerospace engineering.

Englisch: selective laser melting (3d printing) - SLM
Updated at: 30.10.2021
#Words: 200
Links: light amplification by stimulated emission (fiber optics) (Laser), security level management (SLM), signalling link selection (SS7) (SLS), 3D printing, prototyping
Translations: DE

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