Selective laser melting of metals

The selective laser melting of metals (SLM) creates a 3D geometry as if by magic in a “black box”.

One or more laser sources (high-energy fiber lasers) are used to build components generatively or additively from fine metal powder, layer by layer (layer thickness 15 – 500 μm). They are therefore melted locally.

Layer by layer means: lowering the building space floor, new layer of powder and renewed melting.

After cooling the material solidifies. The component contour is created by deflecting the laser beam using a mirror (scanner). Machines and systems for selective laser melting of metals have – depending on the manufacturer – different strategies for minimizing stresses in the component.

The materials range from stainless steel or tool steel, aluminium and aluminium alloys, titanium and titanium alloys, chrome-cobalt molybdenum alloys to alloys of bronze, precious metal, nickel or copper. In most cases, powder materials are used on the basis of already certified original materials of classical production methods. The densities are around 99.9%.

You can choose between small systems (building space approx. 50 x 50 x 80 mm) or large systems (building space: 800 x 400 x 500 mm). Joining technologies are available for even larger components. Speed of construction, batch sizes and building space – three fixed points of the AM options.