Method and apparatus for assisting removal of sand moldings...

Details Method and apparatus for assisting removal of sand moldings... Method and apparatus for assisting removal of sand moldings...

B - Operations, Transporting

22

D

B22D 29/00 (2006.01)

Patent

CA 2491937

Disclosed is a method for dislodging a mold (10) from a casting (11) formed within the mold. The mold may be removed from the casting by scoring the mold and applying a force sufficient to cause the mold to fracture and break into pieces. Additionally, the mold may be fractured by either explosive charges (22) placed in the mold pack or by high energy pulsations directed at the mold. Once the mold is fractured and broken into various pieces it may then be dislodged from the casting.

La présente invention concerne un procédé permettant de retirer un moule (10) d'une coulée (11) formée à l'intérieur de ce moule. Le moule peut être retiré de la coulée par la découpe de ce moule et par application d'une force suffisante pour entraîner une fracture de ce moule qui se casse en morceaux. Par ailleurs, le moule peut être fracturé soit par des charges explosives (22) placées dans l'enveloppe du moule, soit par des pulsations de hautes énergie dirigées sur ce moule. Lorsque ce moule est fracturé et cassé en différents morceaux il peut être retiré de la coulée.

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