• Preetam Singh Sankhla

The experiment was designed using DESIGN EXPERT software, response surface methodology with Central composite design and analyzed using ANOVA analysis. It is found that as voltage increases Ra decreases, IP increases Ra increases slightly, TON increases Ra increases and TOFF has little influence on surface roughness of the material when it is machined by electric discharge machining process and minimum surface roughness (R) was 3.795µm at voltage of 41.25V, current value of 10.75A, pulse on-time of 54.50µs & pulse off-time of 34µs. we found that current & pulse on-time are the most significant parameter to affect Ra within the range of 6-25A & 30-45V capacity of electric discharge machine.

"Impact of Variuos Parameters on Surface Roughness in Electronic Discharge Machining", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.340-346, September-2018, Available :http://www.jetir.org/papers/JETIRB006063.pdf

"Impact of Variuos Parameters on Surface Roughness in Electronic Discharge Machining", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp340-346, September-2018, Available at : http://www.jetir.org/papers/JETIRB006063.pdf