Effects of machining parameters on surface roughness and macro surface characteristics when the machining of Al-6082 T6 alloy using AWJT

• Published in: Measurement : journal of the International Measurement Confederation 2017-01, Vol.95, p.216-222
• Main Authors: Kartal, Fuat, Yerlikaya, Zekeriya, Gökkaya, Hasan
• Format: Article
• Language: English
• Subjects: Abrasive cutting; Abrasive cutting machines; Abrasive machining; Abrasive water jet; Al-6082 T6 alloy; Aluminum alloys; Aluminum base alloys; Average surface roughness; Cutting equipment; Cutting parameters; Feed rate; Flow velocity; Hydraulic jet cutting; Hydraulic jets; Machine tools; Macro surface characteristics; Measurement; Nozzles; Numerical controls; Surface properties; Surface roughness; Turning; Turning (machining)
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2016.10.007

•Abrasive water jet turning (AWJT) apparatus was used.•Process parameters of abrasive water jet turning processes were investigated.•Al-6082 T6 material was machined by AWJT.•Abrasive mechanism provides cold cutting conditions.•Machining of low density polyethylene material was performed successfully.•Experimentation contains nonlinear regression analysis. This study analyzes the effects of machining parameters on the surface roughness and macro surface characteristics when machining Al-6082 T6 alloy of ∅30 and 240mm in size using abrasive water jet (AWJ) turning processes. The material removal tests were conducted using a computer numerical control (CNC) abrasive jet cutting machine for different parameters of nozzle feed rate (10, 15, 20 and 25mm·min−1), abrasive flow rate (50, 150, 250 and 350g·min−1), spindle speed (25, 50, 75 and 100min−1) and standoff distance (2, 5, 8 and 11mm). Pump pressure at 350MPa, abrasive type of Garnet and size of 120Mesh, and nozzle diameter of 0.75mm are kept constant throughout the experiments. When macro surface characteristics were analyzed, it was found that increased spindle speed, decreased nozzle feed rate, increased abrasive flow rate and lower standoff distance resulted in smoother surfaces. According to the findings of this study, best results were obtained when spindle speed and abrasive flow rate were increased.