Abstract
This paper presents the effect of cutting parameters on the mist particle diameters under the minimum quantity lubrication (MQL) for reducing the air pollution and harm to operators caused by the mist particles produced during the MQL process. In this study, turning experiments were conducted on AISI 304 stainless steel using MQL, for which 16 groups of Taguchi experiments were utilized. The results show that by using the MQL, the contribution rates of the cutting speed and air pressure to the mist particle diameters were 54.62% and 25.34%, respectively. The increase in air pressure caused an increase in the overall proportion of mist particles with diameters in the range of 2.5~10 μm, from 88 up to 96%. The increase in cutting speed aided the conversion of mist particles with a diameter in the range of 2.5~10 μm to a diameter of 2.5 μm, about 16 to 27% of the 2.5~10 μm. However, the overall proportion of the mist particles was not changed. Finally, by targeting the cutting efficiency, surface roughness, and deposition of the cutting fluid mist, the four parameters were optimized using a multi-objective optimization algorithm. Compared to the 14th group experiment with a similar cutting efficiency, the verification experiment results show that the surface roughness decreased 16% and the deposition of cutting fluid mist increased 173% by using the optimized parameters.
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Acknowledgments
This work was supported by the Sichuan Science and Technology Program (2019YFG0358), a research project of the Chengdu Science and Technology Bureau (2015-NY02-00285-NC), and the Key Technologies Research and Development Program (2020YFB2010500). The authors remain immensely grateful for their support and contribution.
Funding
1. The Sichuan Science and Technology Program (2019YFG0358)
2. Chengdu Science and Technology Bureau (2015-NY02-00285-NC)
3. The Key Technologies Research and Development Program (2020YFB2010500)
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1. The distribution of mist particles of turning AISI 304 under MQL is studied, and the effects of cutting speed, feed rate, depth of cut, and air pressure on the diameters of mist particles are also discussed.
2. The cutting efficiency, surface roughness, and deposition of cutting fluid mist are innovatively taken as an optimization goal.
3. An improved gray relational analysis based on the combined weight is used for searching the best solution to achieve higher cutting efficiency, lower surface roughness, and more deposition of cutting fluid mist.
4. Reducing the emission of mist particles is achieved to protect the environment under MQL.
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Liu, N., Zou, X., Yuan, J. et al. Optimization of MQL turning process considering the distribution and control of cutting fluid mist particles. Int J Adv Manuf Technol 116, 1233–1246 (2021). https://doi.org/10.1007/s00170-021-07480-x
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DOI: https://doi.org/10.1007/s00170-021-07480-x