Aluminum casting method

Details Aluminum casting method Aluminum casting method

B - Operations, Transporting

22

C

B22C 3/00 (2006.01) B22D 21/04 (2006.01) B22D 27/00 (2006.01)

Patent

CA 2451447

An aluminum casting method includes the step of applying in advance a mold release agent including magnesium to a mold surface. Thereafter, a nitrogen gas is injected into a cavity to cause reaction between the magnesium in the surface of the mold release agent and the nitrogen gas, thereby forming magnesium nitride. Since the nitrogen gas reacts only with the magnesium exposed in the surface of the mold release agent, the forming time of the magnesium nitride is reduced and also the amount of nitrogen gas used is reduced.

L'invention concerne un procédé de moulage par coulée d'aluminium. Ce procédé consiste à appliquer un agent de libération contenant du magnésium sur la surface d'un moule et à introduire un gaz azote, ce qui permet d'obtenir une réaction entre le gaz azote et le magnésium présent sur la surface dudit agent de libération, de sorte à former du nitrure de magnésium. Comme le gaz azote réagit seulement avec le magnésium exposé sur la surface de l'agent de libération, le temps nécessaire pour former du nitrure de magnésium et la quantité de gaz azote consommé peuvent être réduits.

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