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Effects of a Magnetic Field on the Machining Accuracy for the Electrochemical Drilling of Micro Holes

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Micro electrochemical machining (micro-ECM) is a promising machining technology for microparts of difficult-to-cut metallic materials and has been used in the industries of aeronautics and astronautics, ordnance, precision devices, and… Click to show full abstract

Micro electrochemical machining (micro-ECM) is a promising machining technology for microparts of difficult-to-cut metallic materials and has been used in the industries of aeronautics and astronautics, ordnance, precision devices, and so on. The machining accuracy of micro-ECM is difficult to improve, so a magnetic field is employed to assist with the electrochemical drilling of micro holes. First, micro electrochemical drilling experiments with and without a magnetic field and with different magnetic flux densities were carried out. Then, the effects of the magnetic field on the machining accuracy of micro electrochemical drilling were analyzed and discussed based on the experimental results. The results showed that an external magnetic field whose direction was perpendicular to the feed direction improved the machining accuracy of micro electrochemical drilling, and the machining accuracy was the best when the magnetic flux density was approximately 0.1 T. This study can help to improve the machining accuracy of micro electrochemical drilling and accelerate further research on magneticfield-assisted micro-ECM technology.

Keywords: micro electrochemical; machining accuracy; electrochemical drilling; magnetic field

Journal Title: International Journal of Electrochemical Science
Year Published: 2020

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