Casting of amorphous metallic parts by hot mold quenching

Details Casting of amorphous metallic parts by hot mold quenching Casting of amorphous metallic parts by hot mold quenching

B - Operations, Transporting

22

D

B22D 27/04 (2006.01) B22D 15/00 (2006.01) C22C 45/00 (2006.01) C22C 45/10 (2006.01)

Patent

CA 2412472

A manufacturing process for casting amorphous metallic parts separates the filling and quenching steps of the casting process in time. The mold is heated to an elevated casting temperature at which the metallic alloy has high fluidity. The alloy fills the mold at the casting temperature, thereby enabling the alloy to effectively fill the spaces of the mold. The mold and the alloy are then quenched together, the quenching occurring before the onset of crystallization in the alloy. With this process, compared to conventional techniques, amorphous metallic parts with higher aspect ratios can be prepared.

L'invention concerne un procédé de fabrication de parties en métal amorphe séparant temporellement les phases de remplissage et de trempe du procédé de moulage. Le moule est chauffé à une température de moulage élevée à laquelle l'alliage métallique présente une fluidité élevée. L'alliage remplit le moule à la température de moulage, permettant ainsi à l'alliage de remplir de manière efficace les espaces du moule. Le moule et l'alliage sont ensuite trempés ensemble, la trempe ayant lieu avant le début de la cristallisation dans l'alliage. Avec ce procédé, par rapport aux techniques conventionnelles, les parties en métal amorphe peuvent être préparées avec des rapports de forme plus grand.

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