PERFORMANCE OF DIFFERENT ELECTRODE MATERIALS IN ELECTRIC DISCHARGE MACHINING (EDM) DIN 1.2714

Abstract The aim of the study to investigate and optimization of electrical discharge machining for inspecting the machinability of DIN 1.2714 steel with cryogenically treated copper tool electrode (CT) and cryogenically untreated copper tool electrode (CUT) using Taguchi method. Din 1.2714 steel used for making forging dies of all types. This paper utilizes electrical discharge machining, which is thermal processing work pieces are not affected by mechanical properties of materials. This experiment utilizes the Taguchi method and L18 orthogonal table to obtain the electrode treatment (CT, CUT), current, pulse-on time, pulse-off time, voltage and flushing pressure in order to explore the material removal rate, tool wear rate and surface roughness. The influence of each variable and optimal processing parameter will be obtained through ANOVA analysis and verified through experimentation to improve process.