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Experimental observation of oil mist penetration ability in minimum quantity lubrication (MQL) spray

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Abstract

Minimum quantity lubrication (MQL) is an eco-friendly cooling and lubricating method that has its importance in machining sustainability. However, the behavior of the MQL droplets remains questionable. The present study is conducted to investigate the penetration performance of MQL with different combination of spray parameters and capillary sizes. An observation platform has been designed, which makes the overall penetration process controllable. The results have shown that the shortest penetration time was obtained with larger capillary size, higher air flow rate and the corresponding smaller droplet size. However, the increase of air flow rate has the optimal value when the objective is to penetrate to 1 mm deep from the entrance, whereas it has not shown the similar regulation when the droplet flowed deeper to the center due to the long transport distance has amplified the effects of multiple influence factors. The observation results were verified through simulation and cutting experiment.

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Acknowledgments

This work was supported by the National Key R&D Program of China under Grant No. 2018YFB2002203; and the National Natural Science Foundation of China (NSFC) under Grant No. 51475030. The authors are indebted to the financial support in the accomplishment of this research.

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Authors and Affiliations

  1. School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, China

    Guangyuan Zhu, Songmei Yuan, Xiaoyao Kong & Bochuan Chen

  2. R&D Center of High-efficient & Green CNC Machining Technology and Equipment, Beihang University, Beijing, 100191, China

    Guangyuan Zhu, Songmei Yuan, Xiaoyao Kong & Bochuan Chen

  3. Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, China

    Chong Zhang

Authors
  1. Guangyuan Zhu
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  2. Songmei Yuan
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  3. Xiaoyao Kong
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  4. Chong Zhang
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  5. Bochuan Chen
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Corresponding author

Correspondence to Songmei Yuan.

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Recommended by Editor Chongdu Cho

Songmei Yuan is a Professor of School of Mechanical Engineering and Automation at Beihang University, China. She received her Ph.D. from Harbin Institute of Technology. Her research interests include advanced machining technology and equipment, interdisciplinary in medicine and engineering and intelligent micro-actuator.

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Zhu, G., Yuan, S., Kong, X. et al. Experimental observation of oil mist penetration ability in minimum quantity lubrication (MQL) spray. J Mech Sci Technol 34, 3217–3225 (2020). https://doi.org/10.1007/s12206-020-0713-3

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  • DOI: https://doi.org/10.1007/s12206-020-0713-3

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