Method and tool for electrochemical machining
AssigneeGeneral Electric Company
InventorsBin Wei, Bruce Alan Knudsen, William Thomas Carter, Jr., Hsin-Pang Wang
Life of this patent
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Abstract
An electrode for use in an electrochemical machining process comprising an outer metal skin of corrosion resistant material, an inner core of conductive material, and an insulating coating disposed on an external surface of the outer metal skin. The external surface is partially coated with the insulating coating so as to define a pattern of raised areas to be formed on an internal surface of a predrilled hole in a workpiece.
Claims21
An electrode for use in an electrochemical machining process comprising:
- an outer metal skin of corrosion resistant material;
- an inner core of conductive material;
- and
- an insulating coating disposed on an external surface of said outer metal skin wherein said external surface is partially coated with said insulating coating so as to define a pattern of raised areas to be formed on an internal surface of a predrilled hole in a workpiece.
An electrochemical machining process for forming a raised area in a wall of a predrilled hole in a workpiece comprising:
- positioning in the hole an electrode having an outer metal skin of corrosion resistant material;
- an inner core of conductive material;
- and an insulating coating disposed on an external surface of said outer metal skin wherein said external surface is partially coated with said insulating coating so as to define a pattern of raised areas to be formed on an internal surface of a predrilled hole in a workpiece;
- and
- machining at least one bulb in the wall of the hole by passing an electric current between the electrode positioned in the hole and the workpiece while circulating an electrolyte solution through the hole.
Dependencies are inferred from the claim text.