Surface analysis on anodized aluminum profiles with lubricating oils
Leonardo Corrêa Branco, Michel Domingues Silva, Polyana Alves Radi, Leonardo Henrique Fazan, Danieli Aparecida Pereira Reis
Abstract
The machining of aluminum requires less energy and enables high feed rates. Nevertheless, the material’s elevated thermal expansion coefficient and elastic modulus pose challenges in achieving tight tolerances and contribute to a tendency for distortion. The 6060 alloy, extensively utilized in structural applications, consists of elements such as magnesium, silicon, iron, manganese, and copper, which form intermetallic phases that enhance its machinability, surpassing other aluminum alloys. During machining, most of the generated heat is absorbed by the workpiece, leading to deformation, handling difficulties, and shortened tool lifespan—issues that can be alleviated through the application of cutting fluids formulated with inactive sulfurized mineral oils. This research involved surface characterization through SEM, XRD, and tribological assessments using a pin-on-disk test on anodized 6060-T6 aluminum profiles, comparing two groups of specimens processed with and without cutting fluid. Additionally, an immersion test was performed on the specimens. The findings indicated that the specimens machined with cutting fluid demonstrated greater surface hardness and a reduced friction coefficient. SEM, EDS, and XRD analyses did not identify oxide formation or surface modifications in the specimens subjected to either immersion or machining with cutting fluid.
Keywords
Referências
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Submetido em:
27/01/2025
Aceito em:
11/06/2025
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