Evaluating Influences of Input Parameters on Surface Roughness in Sinking EDM Cylindrical Shaped Parts

Abstract:

The input parameters in the process of sinking Electrical Discharge Machining (EDM) are the essential enabling factors that need to be determined. In the present work, the influences of the EDM input parameters containing pulse on time (T_on), pulse off time (T_off), discharge current (IP), Server voltage (SV), work-piece diameter (d_w) on the surface roughness (SR) in sinking EDM cylindrical shaped part of 9CrSi material were investigated. Taguchi technique and analysis of variance (ANOVA) have been used to identify the weight of EDM factors on SR. The results show that the impact level of T_on, T_off, IP, SP, and d_w are 65.55%, 8.66%, 19.17%, 3.14%, and 0.76%, respectively. By analyzing the experimental results, optimum input parameters with the T_on of 6 ms, T_off of 30 ms, IP of 9A, SP of 3V, and d_w of 10mm have been determined, that allow getting the best surface roughness.

• Periodical: Materials Science Forum (Volume 1018)
• Pages: 85-90
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1018.85
• Online since: January 2021
• Authors: Tran Thi Hong, Nguyen Anh Tuan, Bui Thanh Danh, Le Hong Ky, Nguyen Hong Linh, Tran Ngoc Giang, Vu Ngoc Pi, Nguyen Manh Cuong*
• Keywords: Cylindrical Shaped Part, EDM, EDM Sinking, Surface Roughness, Taguchi Method

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