QUANTIFICATION OF THE COOLING EFFECT OF CRYOGENIC COOLING SUPPLY STRATEGIES THROUGH TEMPERATURE MEASUREMENT WITH FUNCTIONAL TOOL COATINGS FOR TURNING PROCESSES OF POLYPROPYLENE

Röckelein A, Meier T, Hanenkamp N (2025)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2025

Journal

MM Science Journal MM publishing Ltd

URI: https://www.mmscience.eu/journal/issues/december-2025/articles/quantification-of-the-cooling-effect-of-cryogenic-cooling-supply-strategies-through-temperature-measurement-with-functional-tool-coatings-for-turning-processes-of-polypropylene

DOI: 10.17973/MMSJ.2025_12_2025158

Open Access Link: https://www.mmscience.eu/journal/issues/december-2025/articles/quantification-of-the-cooling-effect-of-cryogenic-cooling-supply-strategies-through-temperature-measurement-with-functional-tool-coatings-for-turning-processes-of-polypropylene

Abstract

A current trend towards sustainable machining can be found in the gradual substitution of lubricants by
cryogenic media in the form of liquid carbon dioxide. This strategy has been proven to reduce the tool
wear and increase productivity and energy efficiency in milling processes of titanium alloys. While various
adjustments to the CO2 supply system such as pre-cooling or pressurization are viable, it remains
challenging to adjust the cryogenic cooling capacity to the specific requirements of each process. To do
so, an approach to quantify this cooling effect by temperature measurements with functional coatings of
the cutting insert during turning processes of polypropylene is proposed in this research. The results show
that the influence of the nozzle distance to the cutting tool and the nozzle diameter are reduced by a
variation of the CO2 density. The lowest cutting temperatures are achieved with an increase in pressure
levels and hence a drastic increase in CO2 flow rates. Furthermore, the liquid CO2 based cutting
temperatures are compared to those obtained by cooling with a vortex tube. The utilization of vortex tubes
as a cooling strategy shows potential as an alternative for easy-to-cut materials like polypropylene, since
the effort for the machine integration as well as operator safety precautions are minimized.

Authors with CRIS profile

Andreas Röckelein Lehrstuhl für Ressourcen- und Energieeffiziente Produktionsmaschinen Trixi Meier 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). QUANTIFICATION OF THE COOLING EFFECT OF CRYOGENIC COOLING SUPPLY STRATEGIES THROUGH TEMPERATURE MEASUREMENT WITH FUNCTIONAL TOOL COATINGS FOR TURNING PROCESSES OF POLYPROPYLENE. MM Science Journal. https://doi.org/10.17973/MMSJ.2025_12_2025158

MLA:

Röckelein, Andreas, Trixi Meier, and Nico Hanenkamp. "QUANTIFICATION OF THE COOLING EFFECT OF CRYOGENIC COOLING SUPPLY STRATEGIES THROUGH TEMPERATURE MEASUREMENT WITH FUNCTIONAL TOOL COATINGS FOR TURNING PROCESSES OF POLYPROPYLENE." MM Science Journal (2025).

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