Experimental Investigations into the Effect of Process Parameters on Performance Measures of Sink EDM Process: A Review Year 2011 To 2015 and Future Work
Sink Electrical Discharge Machining (Sink EDM) is a one of the important NTM process wherein electrically conductive work pieces are melted, vaporized (thermal erosion) by immersing in a dielectric fluid; tool electrode and work piece between the DC supply two poles either positive or negative and electric discharges takes place produces very high temperature in few micro seconds. It is widely used in defense, aerospace, automotive, micro systems, mould and die making industries. Recently researchers have discovered many ways to improve process parameters for achieving higher MRR, lower TWR and better surface quality. The paper reviews the works carried out from 2011 to till 2015. It reports on the research related to improve performance measures. The primary objective of analysis is to optimize the process parameters with the help of taguchi robust design methodology, design of experiment (DOE) analysis of variance(ANOVA) signal to noise ratio(S/N ratio, analysis of means (ANOM) face centered or rotational central composite design (CCD) scanning electron microscopy (SEM) X ray diffraction (XRD) response surface methodology (RSM) gray relational analysis (GRA) atomic force microscopy (AFM) energy dispersive spectroscopy (EDS) multiple regression analysis (MRA) mass spectrometry, optical microscopy techniques, fractional factorial design(FFD) with CCD and finite element analysis (FEM) etc. In end of the paper suggestions useful for future work has been indicated.