Experimental investigation on taper angle of micro-electro discharge machining based on Taguchi Method

The need of non-traditional producing has been making small options and irregular contours like within the producing of holes and surfaces with sharp corners and contours for die and moulds creating. within the recent years one in every of the foremost vital technologies in non-ancient producing is micro-EDM (Electric discharge machining). micro-EDM may be a method for getting burr free small options with high aspect ratio wherever machining is finished by fast electrical spark discharges between the piece of work and gear leading to melting and vaporizing of tool and piece of work. Since EDM may be a non-contact machining method. Its applications starting from reaction-propulsion engine parts to hot extrusion moulds wherever toughness and sturdiness square measure needed at high temperatures. The influence of 4 parameters specifically Discharge current (A), Pulse on Time (B), Feed Rate (C), spindle speed (D) on Tapper Angle (TA) are studied and therefore the experiments are conducted based on Taguchi technique with L9 orthogonal array with four columns and nine rows to desire the optimized taper angle of nickel based super alloy 718 specimen for Micro-EDM.