Optimization of cutting parameters for surface roughness in abrasive water jet machining

Abrasive water jet machining belongs to the non-conventional machining processes. Abrasive water jet machining as a tool used by water jet under high pressure with the addition of abrasive particles. The most important characteristic of this technology is a cold cut that heat does not affect the material and a wide range of materials and thicknesses can be machined. The aim of this paper is to conduct the experimental research of process parameters influence on surface roughness of the machined parts, and obtained data on how the process parameters affecting the surface roughness. The research was carried out for two different materials (stainless steel and aluminium alloy) using orthogonal experiment plan. Based on the obtained experimental results are defined by the optimal values of process parameters, verified through confirmation tests, to minimize surface roughness by using Taguchi method.