Electrochemical machining using modulated reverse electric fields
AssigneeFaraday Technology Marketing Group, LLC
InventorsChengdong Zhou, E. Jennings Taylor, Jenny J. Sun, Lawrence E. Gebhart, Robert P. Renz
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Abstract
Electrochemical machining of metals and alloys is accomplished by using a pulsed electric current incorporating modulated reverse electric current. Reverse (cathodic) pulses are interposed between forward (anodic) pulses. The process is useful for electrochemical shaping of metals, electrochemically polishing metal surfaces, and electrochemical deburring of metal articles. The process is especially useful for electrochemical processing of metals and alloys that readily form passive surface layers.
Claims17
A method for electrochemical deburring of a metal substrate comprising
- interposing an electrolyte between a metallic substrate including burrs and an electrically conductive tool, and
- passing an electric current between said tool and said substrate to effect anodic dissolution of said burrs,
- wherein said electric current is a pulsed current comprised of anodic pulses and cathodic pulses wherein said cathodic pulses are interposed between at least some of said anodic pulses, said anodic pulses have a pulse width of from about 1 ms to about 50 ms and said anodic pulses have a frequency between about 5 Hertz and about 500 Hertz.
Dependencies are inferred from the claim text.