Optimization Of Process Parameters in Electro Discharge Machining in Obtaining Maximum MRR And Minimum EWR Using Taguchi Method

In today’s manufacturing environment many large industries use nontraditional machining process such as EDM to adapt the ever-changing competitive market requirement. Due to high capital and manufacturing cost, there is an economic need to operate these machines as efficiently as possible in order to obtain the required pay back. The success of the any manufacturing process depends greatly upon the appropriate selection of control parameter. In the present study, multi response optimization of EDM parameter has been attempted to achieved the feasibility in small size hole manufacturing. The experiment will be performed on Monel k-500 using rotary brass hollow tubular electrode of 1mm diameter with through hole center flushing technique. In this experimental work, the control parameters namely, pulse current, gap voltage, pulse duration, pulse off time and dielectric pressure have been considered to determine their optimum level based on the Taguchi methodology. ANOVA was carried out to examine the effect of each control parameter on output response. The confirmation experiment has been conducted to validate the experimental result which demonstrates that the response parameter of the EDM-drill process can be improved effectively through this approach.