Session: Corrosion and Corrosion Testing of Additively Manufactured Materials
Increase Corrosion Resistance by Minimizing Surface Roughness in Face Milling (C2026-00447)
Monday, March 16, 2026
9:00 AM - 9:30 AM Central
Location: 342 C
Earn .5 PDH
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Optimization for the best machining parameters to improve the surface finish of aluminum by using three different endmill Helix angles (35°, 40°, 45°) in CNC milling operations. The parameters evaluated consisted of the spindle (rpm), feed rate (mm/min), and depth of cut (mm). Test pieces of aluminum alloy 2024 were tested using a CNC milling machine. The milling parameters were generated by numerical control (NC) codes with Mastercam software. Test results were analyzed using a surface roughness gauge and a 180-liter salt spray chamber for 96 hours. After analysis, using the Helix angle of 45° with the spindle of 1500 rpm will produce the best surface finish when compared to other Helix angles. Additionally, when tested with the salt spray chamber, with the conditions of 1 bar of pressure, temperature of 45°C, in a 5% NaCl solution for 96 hours, the Helix angle of 45° performed the best. The data was then validated with a microhardness test.
