OPTIMISATION OF WIRE EDM PROCESS PARAMETERS ON D3 TOOL STEEL USING PRINCIPAL COMPONENT ANALYSIS
Journal Title: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) - Year 2017, Vol 7, Issue 2
Abstract
Wire electrical machining is an extremely potential electro thermal process that is use to machine material of any hardness, strength with very close tolerance. WEDM can also machine precise, complex and irregular shapes with high degree of accuracy and fine surface finish. The aim of the present research work is to optimize the machining parameter of wire electrical discharge machining (WEDM) for multiple performance characteristics on D3 tool steel using principal component analysis (PCA). The experiment work is carried out on sprint cut Elektra wire cut electric machine (ELPLUS 40A DLX) based on Taguchi’s L9 orthogonal array (OA) with combinations of four inputs machining parameters viz. pulse on time, pulse off time, peak current and servo feed. The performance response is surface finish, material removal rate and wire wear ratio. Principal component analysis has been accumulated to compute a multi-response performance index (MPI). Analysis of variance (ANOVA) is also carried out and it is found that Ton is most significant factor where as Ip is most effective parameter affecting material removal rate, surface roughness and wire wear ratio. Optimal parameters of wire EDM is found out for maximization of material removal rate and minimization of surface roughness and wire wear ratio. Finally, the optimal result is verified through confirmation experiment and it is found that the improvement in material removal rate is 27.03%, where as the improvement percentage for surface roughness is 18.51 and for wire wear ratio 1.03%.
Authors and Affiliations
JYOSHNA JOSHI, ONKAR SONARE
Keywords
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