Abstract:

In this study, the R65 stainless steel, used as a pattern steel, was studied by the micro-electrical erosion processing (micro-EDM). In the micro-EDM process, the effect of the current A (3, 4 and 5 A), the impact time (Ton) (3, 4 and 5 μs) and the waiting time (Toff) (2, 3, and 4 μs) factors on the delamination factor (FdT and FdB) and the Kerf angle (Ko) was studied. The test arrangement was made according to the Taguchi method L9 ortogonal arrangement. In the micro-EDM process, a multi-factor analysis (GRA) method has been used for multi-characterization because the results are influenced by multiple factors. ANOVA analysis has been conducted to determine the most effective factors. According to the results obtained, the lowest curve angle, FdT and FdB values were identified as 0.267 (Ko) 24,259 μs and 59,534 μs respectively. The estimated values by Taguchi method were found within the 95% confidence range (CI). According to ANOVA analysis, the most important factor that affects the results is determined as Stream with a contribution rate of 99.1%.

Keywords: