Optimization of Abrasive Water Jet Machining Process Parameters for Duplex Stainless Steel-2205 by Using Response Surface Methodology

Abstract

Abrasive Water Jet Machining is a versatile and fastest growing machining process and primarily used in machining of hard and difficult materials.It is also used in machining of soft, thick, light, thin and fragile materials. It compliments other technologies such as Milling, Laser, EDM etc…. It doesn’t possess any mechanical stress to operator and environmental hazards. AWJM cut the material accurately unlike any other machining process.AWJM is mainly adopted in aerospace industry for cutting high strength materials and other composites. It finds most of its applications in machining of gas turbines, rocket motors, space craft, nuclear power and pumps etc., A very thin stream of about 0.004 to 0.010 dia. can be cut and material loss is also less due toaccurate cutting. Standoff distance between mixing tube and work part is typically 2 to 4mm important to keep to a minimum to get superior surface finish.The objective of this research is to analysis the effect of input process parameters and to optimize process parameters for achieving optimizing Processes responses such as Metal Removal Rate,Surface roughness and Dimensional deviation simultaneously while machining on the Austenite-Ferrite based alloy DUPLEX STAINLESS STEEL 2205 using AWJM process. It is a precipitation hardened material and has good creep-rupture strength. It shows good mechanical properties even at high temperatures. Applications are Intricate shapes can be easily obtained for Aerospace products ,Metal Matrix Composite & Ceramic Matrix Composite.