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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 984-985A Study on the Die-Sinking Micro-Electrical...

A Study on the Die-Sinking Micro-Electrical Discharge Machining of EN-24 Die Steel Using Various Electrode Materials

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Abstract:

Micro-EDM is an extensively used machining process for the fabrication of micro-holes with various advantages resulting from its characteristics of non-contact and thermal process. In this micro-fabrication technique, processing parameters greatly affect processing efficiency and stability. An experimental investigation on die-sinking Micro-EDM of EN-24 die steel using various electrodes such as tungsten, copper, copper tungsten and silver tungsten has been carried out. The present study aims to assess the quality and accuracy of the produced micro-holes, machining stability, material removal rate (MRR), tool wear ratio (TWR), surface roughness (Ra), Heat affected zone (HAZ) and overcut (OC). In addition, the influence of gap voltage, capacitance and discharge energy on the performance of the process has also been investigated. Experimental results proved that the overall performance of the copper electrode is found to be optimum with high MRR, thin HAZ though copper shows higher TWR, surface roughness and overcut.

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Periodical:

Advanced Materials Research (Volumes 984-985)

Pages:

73-82

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.984-985.73

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Online since:

July 2014

Authors:

A. Kadirvel*, P. Hariharan, M. Mudhukrishnan

Keywords:

Micro-EDM, MRR, Overcut, Surface Roughness (SR), TWR

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* - Corresponding Author

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