A method for making a pressed part with separations or voids

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 43/00 (2006.01) F16J 9/14 (2006.01) F16J 9/28 (2006.01) F16J 15/00 (2006.01)

Patent

CA 2649815

The present invention is a process for producing molded parts (1) from a polymeric powder or metallic powder, wherein the molded part has a separation or a void (5,10). The separation or void is formed by inserting a separator or void-forming material into the die cavity before, during or after filling the die cavity with the powdered molding material that is to form the pressed part. After the pressed part is formed the separator or void-forming material is removed to provide the separation or void.

La présente invention concerne un procédé de fabrication d'une pièce moulée à partir d'une poudre polymère ou d'une poudre métallique, dans lequel la pièce moulée est munie d'une séparation ou d'un vide. La séparation ou le vide est formée en insérant un séparateur ou un matériau formant un vide dans la cavité de matrice avant, pendant ou après le remplissage de la cavité de matrice avec le matériau de moulage en poudre qui formera la pièce pressée. Après la formation de la pièce pressée, le séparateur ou le matériau formant un vide, est retiré pour révéler la séparation ou le vide.

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