Sustainable Lubrication/Cooling Systems for Efficient Turning Operations of g-TiAl Parts from the Aeronautic Industry

• Published in: International journal of precision engineering and manufacturing-green technology pp. 709 - 728
• Main Authors: Elisabet Benedicto, Eva María Rubio, Laurent Aubouy, María Ana Sáenz-Nuño
• Format: Journal Article
• Language: English
• Published: 한국정밀공학회 01.05.2023
• Subjects: 기계공학
• ISSN: 2288-6206; 2198-0810
• DOI: 10.1007/s40684-022-00435-x

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. KCI Citation Count: 2