OPTIMIZATION OF µ - WIRE ELECTRICAL DISCHARGE MACHINING PARAMETERS OF INCONEL 718
Keywords:
µ-WEDM, Inconel 718, Taguchi Method, Surface RoughnessAbstract
Micro-wire electric discharge machining (µ-WEDM) is growing at highly accelerated rate owing to its capability of achieving great dimensional accuracy and good surface finish with contour generation on features at micro scale. Due to widespread applicability in industry, manufacturing engineers require suitable parameters for the prediction of output performance of this process. This study highlights the significance of process parameters on surface roughness of the micro slots produced in Inconel 718 alloy using micro-WEDM. It is very difficult to determine optimal parameters for obtaining minimum surface roughness (SR) is a challenging task in µ-WEDM for improving performance characteristics. The process parameters, namely wire feed velocity, gap voltage, capacitance, feed rate and wire tension are optimized by considering performance characteristics as SR. Analysis of variance (ANOVA) was used to study the significance of process parameters which showed gap voltage and wire tension were be the most significant factors. To improve the machinability of the Inconel 718 alloy, optimum process parameter combination has been identified. This approach showed improved machining performance in the µ-WEDM process.
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References
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