B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
B22C 9/06 (2006.01) B22C 3/00 (2006.01) B22D 17/20 (2006.01) C01B 31/02 (2006.01)
Patent
CA 2730893
A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
Linvention porte sur un procédé de traitement de la surface dun moule de coulage. Le procédé comprend le recouvrement de la surface dun moule de coulage à laide dun film carbone contenant au moins un composé nanocarbone sélectionné dans le groupe constitué des nano-bobines de carbone, nanotubes de carbone et nanofilaments de carbone, et lenrobage de la surface du film carbone à laide de fullerènes. Ladoption dudit procédé pour une surface, notamment pour une surface de la cavité du moule de coulage, avec laquelle un matériau de moulage en fusion tel que de laluminium est mis en contact, permet de supprimer ladhérence du matériau de moulage en fusion au moule et de réduire la résistance au démoulage dun produit, améliorant ainsi leffet de démoulage. Leffet de démoulage pourra être conservé sur une période plus longue quavec un film carbone classique.
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Gowling Lafleur Henderson Llp
Mec International Co. Ltd
Toyota Jidosha Kabushiki Kaisha
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