Metal founding – Means to shape metallic material – Including means to eject or separate product from shaping...
Patent
1998-04-24
1999-06-29
Pyon, Harold Y.
Metal founding
Means to shape metallic material
Including means to eject or separate product from shaping...
164132, 134166R, 134134, 134152, 134133, 134153, 134199, B22D 2900, B08B 300
Patent
active
059154527
ABSTRACT:
Apparatus for removing a ceramic core from a casting in a relatively rapid manner wherein the casting and a fluid spray nozzle are disposed in a manner to expose a region of the core to a core dissolving fluid discharge of the nozzle and a core dissolving fluid is discharged from the nozzle toward the core region to contact the core region and dissolve core material therefrom and progressively from further regions of the core within the casting as they become exposed as core material is progressively removed. The discharge of fluid from the nozzle can be interrupted periodically to allow dissolved core material and fluid to drain from inside the casting or, alternately, the casting and nozzle can be relatively moved so that the casting can drain and/or forced air can be directed at the casting to this same end at a location spaced apart form the nozzle.
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Conroy Patrick L.
McRae Michael M.
Pierson Harold C.
Howmet Research Corporation
Lin I.-H.
Pyon Harold Y.
Timmer Edward J.
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