CNC core removal from casting passages
AssigneesHowmet Research Corporation, Controlco Inc.
InventorsJames L. Beggs, Paul C. Jensen
Life of this patent
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Abstract
A method of removing ceramic core material from an internal passage of a superalloy airfoil casting using a CNC controlled fluid spray nozzle in a manner that the fluid spray nozzle is caused to laterally scan and/or rotary orbit an area of one or more openings of one or more passages at an exterior casting surface to improve removal of material residing in the passage.
Claims4
A method of removing ceramic core material from an internal passage of an airfoil casting, comprising discharging pressurized fluid comprising water from a spray nozzle at an opening of the passage at an exterior surface of the casting while scanning under computer numerical control a two dimensional area of the opening by orbiting movement of said spray nozzle about a center of said opening.
A method of removing ceramic core material from an internal passage of a superalloy airfoil casting, comprising
- discharging pressurized fluid comprising water from a spray nozzle at an opening of the passage at an exterior root surface of the casting while scanning in orthogonal directions a two dimensional area of the root opening with said spray nozzle under computer numerical control, and
- discharging pressurized fluid comprising water from a spray nozzle at an opening of the passage at an exterior tip surface of the casting while orbitally scanning a two dimensional area of the tip opening with said spray nozzle under computer numerical control.
Dependencies are inferred from the claim text.