Performance Analysis Study of WEDM Process on Cutting Rate of H-11 (Hot Die Steel)
Keywords:
WEDM ProcessAbstract
Wire electric discharge machining (WEDM) is used in machining of conductive material with highest accuracy. But due to complex process it is strongly felt that the performance parameters must be analysed before optimising them for getting maximum performance in WEDM process. The H11 is widely used material for die casting dies, aircraft landing gears, helicopter rotor blades and many more applications. The effect of process parameters like pulse on time, servo voltage and peak current on cutting rate had been considered for each experiment. Further experimentation was designed as per L27 orthogonal array at three level. Brass wire electrode with 0.25mm diameter was used as tool in the experiments, due to being widely available and cheap. The experimental results were analyzed and explained with the help of plotting linear and surface graphs between various parameters. The combined contribution of the process parameters were also plotted and explained with the help of 3-D graphs. SEM test was also conducted to validate the result. It was found that all the three input parameters selected were significant and contributed maximum performance at a particular value.
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References
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