| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 91 ===
Electrochemical micro machining (EMM) appears to be very promising as a future micro-machining technique since in many areas of applications it offers several advantages. The paper highlights the design and development of an EMM system set-up, which includes various components such as mechanical machining components, electrical systems and an electrolyte flow system, etc. Copper electrode tubes ranging from 0.2mm to 0.5mm are used as tools. Different parameters, such as the working voltage, the feed speed and the electrolyte flow temperature are used to get the aperture’s sizes of different alloys. Sodium nitrate solution is used as the electrolyte.
The result shows that working voltage, the feed speed and the electrolyte flowing direction play an important part in the EMM proceeding. In EMM set-up, the electrolyte flow circulating system is essential and must be considered carefully, otherwise the dirty electrolyte will flow into the machining chamber again and cause second discharging of the work piece and infect the aperture’s sizes.
Because the copper electrode tube is too small, a use current passing will destroy the copper electrode tube. The copper ion will pile up at the top of the copper electrode tube. The copper form shape will change that will infect the aperture’s sizes as well.
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