Selective Laser Melting
Selective laser meting is an additive manufacturing process where the parts are constructed from the digital design model, the parts manufactured with this process feature uniform and complete density, without deformations and porosity, without defects and do not require further post processing steps to obtain the final part.
The process of selective laser melting works by building the part layer by layer, following the 3D geometry of the piece.
The alloy used in the process (dental bio-compatible Co-Cr alloy) is a fine powder that is applied in very thin layer (up to 20 microns) on build platform and using a high power laser beam, is fully melted (layer by layer) in concordance with the geometry of the piece.
The precise positioning and the high power of laser beam assures the reaching of melt temperature of powder alloy (liquid state) in such way that the part is without porosity, inclusions, fully uniform dense part (8.8g/cm3 - higher density than parts obtained using LWC for similar alloys).The minimal feature that can be achieved is 40 microns, the 3D model is constructed at high resolution.
The final parts are fully dense, with superior mechanical characteristics (see Co Cr alloy specifications). Also the parts are chemical inert, without porosity, inclusions, fully uniform dense and bio-compatible part, that has no deformations and high detail resolution in conformity with the 3D designed model (superior then parts manufactured with LWC method).
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