| Abstrakt: |
The current study has been conducted comparing two different cutting approaches in order to turning of pure Titanium (grade II) alloy. The Minimum Quantity Lubrication (MQL) and an upgraded version of MQL using Ranque-Hilsch vortex tube (RHVT) have been compared. Furthermore, Life cycle assessment has been executed using SimaPro version 9.0 in combination with ReCiPe midpoint (H) impact assessment method. A careful analysis of the twenty-six experiments, designed based on response surface methodology divulged that, overall process within the chosen system boundaries significantly affected most of environmental indicators (EI's) related to toxicity namely freshwater ecotoxicity, marine ecotoxicity, terrestrial ecotoxicity, human carcinogenic toxicity and human non carcinogenic toxicity. With the most preformed impact at the parametric combinations (vc = 250, f = 0.05, ae = 0.4) and (vc = 275, f = 0.5, ae = 0.5) for both cooling strategies Furthermore, the overall normalized impact serve for RHVT was found to be lower than the MQL techniques, accentuating its usefulness towards sustainability improvement. It has also been found that majority of the impact contribution has been made by the EI's related to human health, when compared to the EIs related to resources or ecosystems. To sum up, it can be concluded that using an RHVT in combination with the MQL cooling technique has potential to improve the overall sustainability of machining process. [ABSTRACT FROM AUTHOR] |
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