Method and apparatus for smoothing elements produced using SLS incremental technology

摘要

Method and device for smoothing elements made using the SLS incremental technology (Selective Laser Sintering) of materials based on polyamide powder - PA. The method consists in that the element is subject to effects of vapours of a chemical compound from the following group: formic acid, acetic acid, m-creozol, acetic anhydride, so that the applied chemical compound, in atmospheric pressure, is brought to a temperature above its specific boiling point for a time of 1-350 seconds, counting from the moment when vapours of the chemical compound condensate on the processed prototypical element. The device has a chamber (3) with working space, below which there is a container of the active substance dispenser and heating element (6), separated from the working space with the movable screen (7), and vapour extraction system (8) with ventilation duct.