Experimental Investigation Of AISI d3 Steel With Four Input Parameters Using WEDM By ANOVA Techniques.

MECHANICAL ENGINEERING

ABSTRACT An experimental study has conducted, in this work to determine statistical models for optimization of process parameters in wire EDM. Wire electrical discharge machining (WEDM) technology has extensively used in the field of medical, mould making, Die making, aerospace and automobile industries. AISI D3 Steel(contains 1.5-1.8% carbon) is the hard material so that cutting by other machining is very difficult. But this cutting process make easy with wire EDM. D3 steel is widely used in making the press dies for cutting and forming operation therefore surface finishing of it is very important. The paper is focusing on to find out the combination of process parameters for optimum surface roughness, material removal rate (MRR), Kerf width and wire wear ratio in wire electro discharge machining (EDM) of AISID3 Steel. The best combination of machining parameter viz. machine feed, voltage, pulse on time and pulse off time. The paper highlights the importance of process parameters and different machining conditions on MRR, surface roughness (Ra), kerf width and surface topography. In this work, machine feed, voltage, pulse on time and pulse off are input parameters and surface roughness ,MRR, kerf width and wire wear ratio as output parameters. The optimal values of these parameters have defined with the aim of achieving the better surface roughness and higher MRR and better WWR. The experiment work had conducted with three input parameters pulse on time, pulse off time, machine feed and voltage, and also its different levels. Full factorial technique had been used for accurate results. ANOVA had been used for the analysis and defined optimum value of input parameters for getting best output on D3 steel.

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