Injecting molten metal into a mold

Details Injecting molten metal into a mold Injecting molten metal into a mold

B - Operations, Transporting

22

D

B22D 17/20 (2006.01)

Patent

CA 2486419

Air voids within a die casting may be minimized by controlling, during the shot process, the venting of gas from the shot tube (40) through a shot tube opening (42) with the proper size at a proper location, and the movement of metal within the shot tube (40) to avoid entrapped gas and prematurely solidified aluminum particles in the molten metal being injected into the die cavity (11c).

L'invention concerne un procédé permettant de réduire au minimum les espaces interstitiels dans un produit moulé sous pression, en régulant, lors du processus d'injection, l'évacuation du gaz du tube d'injection (40) par une ouverture (42) ménagée dans ce dernier aux bonnes dimensions et au bon endroit, et le mouvement du métal à l'intérieur du tube d'injection (40), de façon à éviter toute injection dans la cavité du moule métallique (11c) de gaz piégé et de particules d'aluminium prématurément solidifiées dans le métal en fusion.

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