Example of prototypes and tools made of 316L stainless steel, Ti6Al4V titanium alloy and AlSi10Mg aluminum.
During Direct metal laser sintering, a thin metal layer of powder is spread uniformly on the building plate with an automated roller.
The powder bed is maintained at an elevated temperature so that the metal powder is at an optimum temperature for the sintering.
The laser starts moving on a cross section of the object by heating the powder without melting it.
A new layer of powder is then spread on top of the previous layer and the laser begins to form the next section.
When printing is complete, the build chamber, model and excess powder inside is allowed to cool. The excess material is then recovered and recycled, leaving behind the final model.
Several types of metal can be printed in 3D including stainless steel, aluminium or titanium.
AlSi10Mg is the most widely used aluminum alloy in additive manufacturing.