Effect of Discharge Parameters on Micro-Surface Topography of NAK80 by Mirror-Like Surface EDM

Abstract:

The effects of discharge parameters on micro-surface topography in mirror-like surface electrical discharge machining (EDM) process were investigated, and the optimization scheme was obtained. The realization of the process parameters and their effects were analyzed by the Taguchi method. The surface roughness amd 2D micro-surface topography were measured. An L16 (44×23) Taguchi standard orthogonal array was chosen for the design of experiments. The level of importance of the parameters parameters on surface roughness was determined by using analysis of variance (ANOVA). The experimental results confirmed that peak current and open discharge voltage have more influence on the surface roughness on mirror-like surface EDMed workpiece in comparison with pulse duration and pulse off-time.

• Periodical: Key Engineering Materials (Volumes 431-432)
• Pages: 438-441
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.431-432.438
• Online since: March 2010
• Authors: Hong Jun Wang, Dun Wen Zuo, Hong Miao, Hong Feng Wang, Min Wang
• Keywords: Electric Discharge Machining (EDM), Micro-Surface Topography, Mirror-Like Surface, Surface Roughness (SR)

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