Multi performance investigation of Inconel-625 by abrasive aqua jet cutting

Abstract

ABSTRACT Inconel-625 is a tough-to-cutting material used in ultra-supercritical power plants for flanges, offshore oil sectors, and turbine blades, among other high-temperature components. The objective of this article is to determine the link between four key process independent variables: traverse speed (TSP), abrasive mass flow rate (AMFR), abrasive aqua jet pressure (AAJP), and gap distance (Gd) to the surface roughness (SRa), kerf angle (KEA), and erosion rate (MRR). The response surface methodology-Central composite design (RSM-CCD) was used to perform the experimental interpretations. The influence of individual abrasive aqua jet cutting (AAJC) factors was determined using analysis of variance technique (ANOVA). It was found that AAJP is the dominant factor in the responses. When the AAJP reached its maximum value of 300 MPa, the SRa and KEA reduced by 27.19% and 13.83%, respectively, the MRR improved by 23.71%. The Desirability analysis is handled to optimize the AAJC parameters of Inconel-625. The optimal values of parameters obtained were 300 MPa AAJP, 75 mm/min TSP, 2.4 mm Gd, and 0.55 kg/min AMFR to minimize SRa, KEA, & maximize the MRR. The scanning electron microscope is used to examine the surface morphology and erosion mechanisms.