Investigation of Process Parameters on Improvement of MRR and Surface Roughness on Abrasive Water Jet Machine for Inconel 600

Abrasive water jet machining (AWJM) belongs to mechanical group of non-conventional processes in which mechanical energy of water and abrasive phases are used to achieve material removal or machining. The basic methodology is that the water is pumped at a sufficiently high pressure, 200-400 MPa ( 2000-4000 bar) using intensifier technology and material removal taking place by impact erosion of high pressure , high velocity of water and entrained high velocity of grit abrasives on a work piece. The objective of experimental investigation is to conduct research of machining parameters impact on MRR and Surface roughness of Inconel 600 material. In this research paper, Taghuchi method is used to find optimum parameters for abrasive water jet machining (AWJM). The process parameters selected in this experiment are water pressure, abrasive flow rate, jet traverse speed and standoff distance. There is L9 orthogonal array used and for each combination we have conducted three experiments and with the help of signal to noise ratio we find out the optimum results for AWJM. It was confirmed that determined optimum combination of AWJM process parameters satisfy the real need for machining of Inconel 600 in actual practice.