Investigation on the Influence of Machining Fluid on Processing Characteristics in Micro-EDM

Abstract:

In this paper the influence of machining liquid on the processing characteristics, such as the tool electrode wear and the tool actual feed were discussed. Micro EDM drilling was carried out using deionized water and oil dielectric as the machining liquid. It was found that using deionized water reduced the tool electrode wear. Also, occurrence of short-circuits during the processing is one of the reasons for causing large electrode wear. In the case of using oil dielectric, processed depth influences the tool electrode wear greatly and causes the change in the actual feed rate. While using deionized water, processed depth also causes the change in the actual feed rate, but nearly had no influence on the tool electrode wear. Meanwhile, when using deionized water, although the small electrode wear and high machining speed can be obtained, electrolytic dissolution may occur. Therefore, the effective method of decreasing the open voltage and increasing the feed rate to prevent the electrolytic dissolution was mentioned and experimentally verified.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 407-413
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.407
• Online since: February 2012
• Authors: Sha Li, Wataru Natsu, Takeshi Masaki, Zu Yuan Yu
• Keywords: Electrode Wear, Feed Rate, Machining Fluid, Micro-EDM

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