Aluminum die cast product and method for manufacturing same

Details Aluminum die cast product and method for manufacturing same Aluminum die cast product and method for manufacturing same

B - Operations, Transporting

22

D

B22D 17/00 (2006.01) B22D 17/22 (2006.01) B22D 25/00 (2006.01) B23P 15/00 (2006.01)

Patent

CA 2631229

An object is to provide an aluminum die cast product, e.g., a pressure vessel that requires high airtightness, in which pressure leak or gas leak ratio can be reduced and the product yield can be increased and also to provide a method for manufacturing the product. An aluminum die cast product in which a cast hole (2A) is formed by a core pin (5) in a thick portion (4) that is made thicker than other portions, wherein a chill layer (2B) with a secondary dendrite arm spacing of at least 5.5 µm or less is provided at the surface of the cast hole (2A).

L'invention concerne un produit en aluminium coulé sous pression tel qu'un contenant sous pression nécessitant une étanchéité à l'air élevée, qui réduit le taux de fuite de pression ou de fuite de gaz, parvenant à améliorer la résistance. L'invention concerne également un procédé de fabrication de celui-ci. Le produit en aluminium coulé sous pression est un produit qui a un trou de coulée (2A) formé au moyen d'une broche pour noyau (5) dans une zone épaisse (4) ayant une épaisseur plus importante que dans d'autres zones. Le trou de coulée (2A) est doté sur sa surface d'une épaisseur, de valeur donnée ou plus élevée, de couche métallique (2B) d'un espacement de bras secondaire de dendrite d'au moins 5,5 µm ou moins.

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