Armstrong Teasdale LLP
Methods and systems for forming cooling holes having circular inlets and non-circular outlets
A method for forming a hole in an object is provided. The method includes forming a starter hole in the object, providing an electrochemical machining electrode that includes insulation that extends only partially around the electrode, and inserting the electrode into the starter hole to form a hole in the object that has an inlet defined by a first cross-sectional area and an outlet defined by a second cross-sectional area.
General Electric Company
B F B B B F B
B23H F05D B23H B23H B23H F01D B23H
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Bin Ching-Pang Chen-Yu Jack
Wei Lee Chou