Process parameters optimization in machining of monel 400 alloy using abrasive water jet machining

Abstract

This research examines the optimum machining features for abrasive water jet cutting of Monel 400 alloy. This alloy system faces significant challenges in conventional machining and can be surpassed by using the coolest machining technology, such as AWJM. In this experimental investigation, the water beam jet pressure (AP), the nozzle jet traverse speed (NS), and the abrasive flow rate (AMF) were used to explore the kerf taper angle (Kta) and surface roughness (Ra) response variables. The experimental L-9 layout (Taguchi's/L-9(−|-) standard orthogonal array) was used to run the experiment. The S/N ratios for each experimental run were determined using a mono-output response optimization technique. The input characteristics, such as water beam jet pressure (AP) and abrasive flow rate (AMF), were determined to have the most substantial effects on kerf taper angle (Kta) and surface roughness (Ra). While increased water pressure (AP) caused a narrowed jet, reducing the kerf taper angle (Kta) and surface roughness (Ra). Its simultaneous abrasive mass flow rate (AMF) increase causes constant erosion on the cutting front, resulting in a smooth surface roughness (Ra) and less kerf taper angle (Kta). Confirmation tests were carried out using the optimal input parameter combinations found by the statistical program to establish effective solutions to the machining.