Rapid solidification processing system for producing molds,...

B - Operations – Transporting – 22 – F

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B22F 3/115 (2006.01) B22F 9/08 (2006.01) B29C 33/38 (2006.01) B29C 41/08 (2006.01) B29C 41/36 (2006.01) B29C 41/46 (2006.01) B29C 67/00 (2006.01) C23C 4/12 (2006.01)

Patent

CA 2411044

A system for the spray forming manufacturing of near-net-shape molds, dies and related toolings, wherein liquid material such as molten metal, metallic alloys, or polymers are atomized into fine droplets by a high temperature, high velocity gas and deposited onto a pattern (34). Quenching of the in- flight atomized droplets by a quench gas in a chamber (51) provides a heat sink, thereby allowing undercooled and partially solidified droplets to be formed in-flight. Composites can be formed by combining the atomized droplets with solid particles such as powders, whiskers or fibers.

La présente invention concerne un système permettant de produire des moules, des matrices et des outils associés, présentant une grande précision dimensionnelle, par formage par pulvérisation. Selon cette invention, de la matière liquide, tel que du métal fondu, des alliages métalliques ou des polymères fondus, est atomisée en fines gouttelettes, au moyen d'un gaz à température et à vitesse élevées, puis est déposée sur un modèle (34). La trempe des gouttelettes atomisées en vol, effectuée au moyen d'un gaz de trempe dans une enceinte (51), fournit une source froide qui permet la formation en vol de gouttelettes en surfusion et partiellement solidifiées. Des composites peuvent être produits par combinaison de gouttelettes atomisées et de particules solides, telles que des poudres, des trichites ou des fibres.

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