EVALUATION OF GEOMETRIC AND QUALITATIVE CHARACTERISTICS OF THE ALUMINIUM ALLOY AFTER CUTTING BY ABRASIVE WATER JET

Presented article is aimed on the evaluation of geometric and qualitative characteristics of the surface created abrasive water jet cutting of EN AW 2024 aluminium alloy with traverse speed change in values from 100 to 600 mm.min-1. The resulting surfaces were evaluated according to the Swiss standard SN 214001 and ISO/TC 44 N 1770 which describes the parameters of the machined surface and evaluates the final quality of the created surface. A surface with the best properties was created at the traverse speed of 100 mm per minute. The methodology included geometric evaluation, including measurements of perpendicularity and flatness, and dimensional evaluation of the accuracy of the cut width. Qualitative characteristics included analysis of surface roughness (Ra) and visual inspection of cut marks. The surfaces were classified into quality classes (Q1–Q5) according to the measured values.