A Study on Working Process of Wire-EDM by Using Two Different Dielectric Fluids on HCHCr Alloy Steel

Abstract:

Wire electrical discharge machine (WEDM) is extensively used in machining of conductive material where precision is of prime importance. Machining operation in WEDM is treated as a challenging one because improvement of more than one Machining performance characteristics are sought to obtain precision work. This project illustrates the implementation of Taguchi technique to select the best optimal machining parameters of WEDM process using Copper powders. In general the machining parameters namely metal removal rate and the surface roughness are determined in WEDM process. The machining material chosen for the experiment is HCHCr alloy steel. Experiments were conducted as per Taguchi’s L18 orthogonal array under different cutting conditions of pulse on-time, pulse off-time, current and frequency and the results are compared. The level of significance of the machining parameters on the output characteristics is identified by Analysis of Variance. Finally this research concludes that the copper powder suspended demineralized water when used as dielectric gives higher MRR and lower Ra. Taguchi optimization is carried out to find the best combination of machining parameters to obtain the desired result

• Periodical: Applied Mechanics and Materials (Volume 852)
• Pages: 212-217
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.852.212
• Online since: September 2016
• Authors: S.K. Dinesh Kumar*, R. Selvanayagam, M. Sivakumar, S. Krishnaraj
• Keywords: Copper Powder, HCHCr, Metal Removal Rate (MRR), Surface Roughness (Ra), WEDM

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