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Volume 4
Nano Research & Applications
ISSN: 2471-9838
JOINT EVENT
October 04-05, 2018 Moscow, Russia
&
2
nd
Edition of International Conference on
26
th
International Conference on
Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018
Page 66
Octavio Manuel Pereira
University of the Basque Country, Spain
Octavio Manuel Pereira, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-020
Cryogenic lubri-coolant machining on difficult-to-cut alloys
N
owadays, environmental consciousness is taking relevance in the society. This situation involves some consequences
in the manufacturing processes with the aim of improving this philosophy. In the particular case of machining
operations, the target is reducing the use of cutting fluids to assist the process. It has to be taken into account that
these cutting fluids are based on mineral oils and consequently, its use is environmentally inefficient. Besides, according
to several authors, its use represents between 17% and 30% of the total manufacturing costs. Therefore, looking for
other lubricooling alternatives is a big challenge to be faced. Among these alternatives, CryoMQL, which combines CO
2
cryogenic cooling and MQL, is presented as a full solution reaching a balance between environmental and economic
issues. In the figure several performances of its use are shown. Furthermore, this lubricooling technique takes relevance
during the machining processes of heat-resistant super alloys. The use of these alloys, known also as difficult-to-cut
materials, is growing worldwide in aeronautical industry related to turbomachinery components. In particular, Inconel
718 super alloy is one of the most used materials in this sector to manufacture turbofan critical components due to
its high hardness combined with a good tensile strength at high temperatures. However, this material presents some
challenges during machining processes leading to high cutting forces, low material removal rates, and other problems
that may cause premature tool breakage which needs to be avoided. Therefore, in order to improve milling processes
in Inconel 718, in this paper is presented a new lubricooling technique of applying CryoMQL in which CO
2
is used as
internal tool coolant with the aim of reducing its consumption. The results show that its use improves the current process,
not only from an environmental point of view, but also from economic and technical point of view, reaching a technology
known as ECO2 milling performance (economy+ecology).
Recent Publications
1. González H, Calleja A, Pereira O, Ortega N, López de Lacalle LN and Barton M (2018) Super abrasive machining
of integral rotary components using grinding flank tools. Metals 8:24.
2. Pereira O, Martín-Alfonso J.E., Rodríguez A, Calleja A, Fernández-Valdivielso A and López de Lacalle LN
(2017) Sustainability analysis of lubricant oils for minimum quantity lubrication based on their tribo-rheological