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Analysis of Electrical Discharge Machining Using Water as Dielectric and Diverse Electrode Materials

[+] Author Affiliations
Hugo Medellin, Aarón Flores, Jorge Morales, Alonso de la Garza

Universidad Autónoma de San Luis Potosí, San Luis Potosí, S.L.P., México

Paper No. DETC2008-49108, pp. 201-207; 7 pages
  • ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 13th Design for Manufacturability and the Lifecycle Conference; 5th Symposium on International Design and Design Education; 10th International Conference on Advanced Vehicle and Tire Technologies
  • Brooklyn, New York, USA, August 3–6, 2008
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4329-1 | eISBN: 0-7918-3831-5
  • Copyright © 2008 by ASME


This paper presents an experimental investigation carried out to study the performance of electrical discharge machining (EDM) using water as dielectric. This experimentation was performed using different types of water as dielectric, several electrode materials and two different workpiece materials. The electrode materials used in the experimentation were bronze, brass, copper, aluminium and steel; and the workpiece materials used were ASTM A36 mild (low-carbon) steel and D-2 tool steel. A new desktop size EDM machine to perform the experiments was designed and is presented in this paper. After performing the experimentation, the results have shown that the best EDM performance is achieved with brass and bronze electrodes using a mixture of 75% tap and 25% deionised water as dielectric. The results also indicate that the material removal rate and the electrode wear are proportional to the source voltage used in the EDM process. Finally, a forming die with a complex shape used in a jewellery industry, was manufactured using the EDM system presented in this paper.

Copyright © 2008 by ASME



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