Optimization of the CO2 Supply of a Cryogenic Minimum Quantity Lubrication System for Machining Processes

Röckelein A, Meier T, Hanenkamp N (2025)

Publication Language: English

Publication Type: Journal article

Publication year: 2025

Journal

Lecture Notes in Mechanical Engineering Springer

Pages Range: 381-389

URI: https://link.springer.com/book/10.1007/978-3-031-93891-7?page=3#toc

DOI: 10.1007/978-3-031-93891-7_42

Open Access Link: https://link.springer.com/book/10.1007/978-3-031-93891-7?page=3#toc

Abstract

The reduction of lubricants plays an important role in improving sus-
tainability of machining processes. However, the heat development in dry machin-
ing can lead to poor surface qualities. Therefore, cryogenic cooling with liquid
carbon dioxide (LCO2 ) has been introduced to adopt the cooling function of con-
ventional lubricants. The density of the CO 2 stream varies depending on a number
of factors, such as change in ambient temperature, the length of the supply line and
filling level of the CO 2 riser bottle. This affects the cooling capacity as it deter-
mines the amount of CO2 that can expand at the nozzle outlet to cool the cutting
operation. In addition, density variations cause turbulence in the jet formation at
the nozzle exit. This prevents a meaningful combination of this cooling strategy
with minimum quantity lubrication, as the oil droplets cannot reach the cutting
zone uniformly. Furthermore, an unstable cooling process directly affects product
quality. Thus, the stabilization of the CO2 density is a key factor in improving pro-
cess controllability. Possible optimizations of the supply line regarding the CO2
density as well as means to adjust the CO2 flow rate dynamically are discussed in this paper.

Authors with CRIS profile

Andreas Röckelein Lehrstuhl für Ressourcen- und Energieeffiziente Produktionsmaschinen Nico Hanenkamp Lehrstuhl für Ressourcen- und Energieeffiziente Produktionsmaschinen

How to cite

APA:

Röckelein, A., Meier, T., & Hanenkamp, N. (2025). Optimization of the CO2 Supply of a Cryogenic Minimum Quantity Lubrication System for Machining Processes. Lecture Notes in Mechanical Engineering, 381-389. https://doi.org/10.1007/978-3-031-93891-7_42

MLA:

Röckelein, Andreas, Trixi Meier, and Nico Hanenkamp. "Optimization of the CO2 Supply of a Cryogenic Minimum Quantity Lubrication System for Machining Processes." Lecture Notes in Mechanical Engineering (2025): 381-389.

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