Optimization of Wire-EDM Process Parameters on Machining Die Steel DC53 using Taguchi Method with Grey Relational Analysis – A Review

Suresh Kumar
2018 International Journal for Research in Applied Science and Engineering Technology  
Unconventional machining processes are used where traditional machining processes are unable to meet the necessary requirements efficiently and economically. Wire Electrical Discharge Machining (WEDM) is one such machi:ning process. It is widely used in machining of conductive materials when precision is of primary significance. This paper presents the literature review of previous work done by researchers on WEDM for optimization using different techniques like improving performance
more » ... formance characteristics, optimizing process variables, monitoring and controlling the sparking process, simplifying the wire design and improving spark efficiency. 431 ©IJRASET: All Rights are Reserved improved with cryogenic treated brass wire electrode. [15] Sharma and Khanna [2012] studied the effects of various process parameters of WEDM as pulse width, time between two pulses, maximum feed rate, servo reference mean voltage, short pulse time and wire mechanical tension, have been experimented for optimizing surface roughness while machining cryogenic treated D-3 material. Experimental observations are based on Taguchi's L-27 orthogonal array has been done. Signal to-Noise (S/N) ratio, Analysis of Variance (ANOVA) and various plots are used to find the optimum process parameter with a least surface roughness. The confirmation experiments has been done for validate the results calculated by using taguchi method. It is concluded that pulse width and time between two pulses were significant variables to the surface roughness of wire-EDMed cryogenic treated D-3. [16] Singh and Singh [2012] studied that wear behaviour AISI D3 Die steel in EDM and compare the tool wear rate of cryogenic treated cooper and brass electrode with simple copper and brass electrode on machining of AISI D3 die steel using current setting as 4A and 8A. The electrolyte is used kerosene oil. Copper electrode is best electrode for high material removal rate. But cryogenic treated copper electrode has very low tool wear as compared to cooper electrode. [17] Rao et al. [2015] concluded that the influence of parameters like discharge current, job thickness, on the machining criteria such as cutting speed, spark gap, material removal rate are determined. The results are useful in setting the parameters required for quality cuts on HC-HCr die steel. Suitable parameters can be selected for machining with the 0.25mm diameter wire. The mathematical relations developed are much more beneficial for machine settings, to estimate the cutting time, cost of machining and accuracy of cutting for any size of the job within machine range. The maximum error obtained in the calculated values and experimental values are less than 2%. [19] III. RESULT After a comprehensive study of the existing literature, it is found that there are a number of gaps in the process of Wire Electrical Discharge Machining. Following are some of the gaps that are observed
doi:10.22214/ijraset.2018.6066 fatcat:kmc5mq3favagxenbgtpkpfcqcu