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SLS is a technique by which
parts are built layer by layer with a layer thickness about
0,1 mm.
The basic material consists of polyamide powder with
particle sizes in the order of magnitude of 50 µm.
Successive powder layers are spread on top of each other.
After deposition, a computer controlled CO2 laser beam scans
the surface and selectively binds together the powder
particles of the corresponding cross section of the product.
During laser exposure, the powder temperature rises above
the glass transition point after which adjacent particles
flow together. This process is called selective laser
sintering.
Alumide is a blend of
aluminium and polyamide powders, which allows
metallic-looking, non-porous components to be machined
easily and is resistant to high temperatures. |
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