• Dr Vijay Kumar
• Rajesh Kumar Mohanty

Electric discharge machining(EDM) is one of the most popular machining methods to manufacture dies and press tools because of its capability to produce complicated shapes and machine very hard materials. The correct selection of manufacturing conditions is one of the most important aspects to take into consideration in the majority of manufacturing processes and, particularly, in processes related to Electrical Discharge Machining (EDM). It is capable of machining geometrically complex or hard material components, that are precise and difficult-to-machine such as heat treated tool steels, composites, super alloys, ceramics, carbides, heat resistant steels etc. being widely used in die and mould making industries, aerospace, aeronautics and nuclear industries. In this research paper an attempt has been made to study the effect of different machining parameters viz. discharge current, pulse on time and thickness of tool on machining of AISI H 13 tool steel material using an U-shaped cu tool with internal flushing. It is found that these control factors have a significant influence on material removal rate. In order to see the impact of control factors on material removal rate, number of experiments was conducted and results were analyzed by Taguchi Methodology and analysis of variance. Main effect plot and interaction plot for significant factors and S/N ratio have been used to determine the optimal design for output response. The effect of control factors were examined for obtaining best parameter setting. The analysis of Taguchi method reveals that, discharge current, pulse on time and thickness of tool has significant effect on the material removal rate.

Electric discharge machining, Taguchi method, material removal rate

"PARAMETRIC OPTIMIZATION OF MATERIAL REMOVAL RATE DURING ELECTRICAL DISCHARGE MACHINING OF AISI H-13 TOOL STEEL USING COPPER ELECTRODE WITH INTERNAL FLUSHING BY TAGUCHI METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.548-553, November-2018, Available :http://www.jetir.org/papers/JETIR1811d28.pdf

"PARAMETRIC OPTIMIZATION OF MATERIAL REMOVAL RATE DURING ELECTRICAL DISCHARGE MACHINING OF AISI H-13 TOOL STEEL USING COPPER ELECTRODE WITH INTERNAL FLUSHING BY TAGUCHI METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp548-553, November-2018, Available at : http://www.jetir.org/papers/JETIR1811d28.pdf