Particle size-influencing layer-by-layer manufacturing method

B - Operations – Transporting – 22 – F

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B22F 3/105 (2006.01) B29C 67/00 (2006.01) A61C 13/00 (2006.01)

Patent

CA 2625556

The invention relates to a method for manufacturing layer by layer a product (10), said method comprising the following steps: applying a layer of a curable material, whereby process parameters, such as layer thickness, layer material, can be adjusted, selectively curing predetermined areas of the applied layer (11) in accordance with the geometrical data of the product, whereby process parameters, such as energy form and energy input, can be adjusted, and repeating these steps until the geometry of the product as a cured material is completed, and finally removing the non-cured material. Known methods have the disadvantage that they offer no variability with respect to the local properties of the product. The invention remedies this disadvantage by modifying at least one process parameter during manufacture in order to influence the particle size in a first area of the product compared to a second area of the product.

L'invention concerne un procédé de fabrication par couches d'un produit (10) faisant intervenir les étapes suivantes : application d'une couche de matériau durcissable avec réglage des paramètres épaisseur et matériau de couche ; durcissage sélectif de certaines zones de la couche appliquée (11) sur la base des données géométriques du produit, telles que par exemple le type et la quantité d'énergie appliquée ; répétition de ces étapes jusqu'à obtention de la géométrie du produit en tant que matériau durci ; et, extraction consécutive du matériau non durci. Les procédés connus ont l'inconvénient qu'ils n'offrent aucune flexibilité en ce qui concerne les propriétés locales du produit. Selon l'invention, au moins un paramètre est modifié lors du processus de fabrication de manière à commander la granulométrie dans une première zone du produit par rapport à une deuxième zone du produit.

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