Sustainable lubrication/cooling systems for efficient turning operations of γ-TiAl parts from the aeronautic industry

E. Benedicto, E. M. Rubio, L. Aubouy, M.A. Sáenz-Nuño

International Journal of Precision Engineering and Manufacturing-Green Technology Vol. 10, nº. 3, pp. 709 - 728

Summary:

This paper presents the study of the finishing, repair, and maintenance turning operations of gamma titanium aluminide (γ-TiAl) parts from the aeronautic industry, with the aim to evaluate different sustainable lubrication/cooling environments, including a newly developed synthetic ester water-based metalworking fluid (EcoMWF) to replace mineral-based MWF (MWF). The systems considered in this work are dry, cold-compressed air, minimum quantity lubrication (MQL), cryogenic, and flood on turning of a new and relatively low explored titanium alloy, γ-TiAl. Therefore, the influence of machining parameters and insert type on tool wear, surface roughness, roundness, and cutting temperature have been investigated for each environment. Results detailed in this study showed a significant influence of the lubrication/cooling systems on the machinability of γ-TiAl. The study also revealed that the sustainability of turning γ-TiAl could be improved under the cryogenic system and the new EcoMWF, keeping the same machining performance as common mineral-based MWF.

Keywords: Metalworking fluid · γ-TiAl · Lubrication/cooling systems · Environmentally sustainable manufacturing · Turning operations · Aeronautic industry

JCR Impact Factor and WoS quartile: 5,300 - Q1 (2023)

DOI reference: https://doi.org/10.1007/s40684-022-00435-x

Published on paper: May 2023.

Published on-line: May 2022.

Citation:
E. Benedicto, E. M. Rubio, L. Aubouy, M.A. Sáenz-Nuño, Sustainable lubrication/cooling systems for efficient turning operations of γ-TiAl parts from the aeronautic industry. International Journal of Precision Engineering and Manufacturing-Green Technology. Vol. 10, nº. 3, pp. 709 - 728, May 2023. [Online: May 2022]