PARAMETRIC OPTIMIZATION OF PLASMA ARC CUTTING ON INCONEL 625 MATERIAL BY REGRESSION ANALYSIS

Mechanical Engineering

For an effective and efficient application of machining processes it is often necessary to consider more than one machining performance characteristics for the selection of optimal machining parameters. In this study a plasma arc cutting system is utilized to cut plates from thick INCONEL625 sheets metals. The Design of Experiments (DOE) technique is used in order to outline the main parameters. In this study, gas pressure, current flow rate and arc gap will take as input process parameters to influence on surface roughness, kerf width and MRR. Experimental result concludes that for achieve good surface quality, current flow rate and arc gap must be required less. Now concentrate on effect of gas pressure on surface roughness, it concludes that with increase in gas pressure, surface roughness is decrease. So it concludes that for achieve good surface quality, gas pressure required must be more. Experimental result show that kerf width increase with increase gas pressure, current flow rate and arc gap and for material removal rate with increase in arc gap, material removal rate is decrease. So it concludes that for achieve good material removal rate, arc gap must be required less. It concludes that with increase in gas pressure and current flow rate, material removal rate is increase. So it concludes that for achieve good material removal rate, gas pressure and current flow rate must be required more. For material removal rate percentage contribution of arc gap is more in three response variables compare to other two process parameters.

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