OPTIMIZATIONS OF MACHINING PARAMETER IN WIRE EDM FOR 316L STAINLESS STEEL BY USING TAGUCHI METHOD, ANOVA, AND GREY ANALYSIS

WEDM is one of the non-traditional method used for the machining complex shape structure and components made up of hard material like composites and HSS. This is an experimental investigation of wire electro-discharge machining (WEDM) of 316L SS. The outstanding characteristics of stainless steel 316L such as their compatibility and noticeable physical, mechanical and biological performance has led to increased application of them in various industries especially in biomedical industries over the last 50 years.316L SS is used extensively for weldments where its immunity to carbide precipitation due to welding assures optimal corrosion resistance. There are some difficulties in machining of stainless steel by conventional machining. On the other hand, unconventional machining process especially Wire electrical discharge machining (WEDM) are more appropriate techniques for machining difficult to machine materials such as stainless steel. Electrical conductive materials are cut by wire EDM that uses a wire as electrode in an electro-thermal mechanism. The machines also specialize in cutting complex contours or fragile geometries that would be difficult to be produced using conventional cutting methods.