Experimental investigation on the environmentally friendly turning of Al7075 using ultrasonic nozzle-minimum quantity lubrication (UN-MQL) system

Document Type : Research Paper

Authors

1 School of Mechanical Engineering, College of Engineering, University of Tehran

2 School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran

3 Department of Mechanical Engineering, School of Engineering Technology, University of Doha for Science and Technology, Doha, Qatar

Abstract

In this experimental work, the effects of cutting fluid and different cutting parameters on surface roughness, tool wear, and chip morphology during turning of Al7075-T6 were investigated. Machining experiments have been done in different environments such as dry, wet, minimum quantity lubrication (MQL) as well as a homemade ultrasonic nozzle- minimum quantity lubrication (UN-MQL). Ultrasonic vibrations can be used to effectively atomize the cutting fluid into fine and uniform-sized droplets and smaller spray angles with a larger spray deposition distance. The MQL system and machining parameters were evaluated by the design of experiments (DOE) method which allows us to carry out the optimization analysis by performing a relatively small number of experiments while determining the influence on the machining performance using the analysis of variance technique. In the second step, an optimization of the machining parameters was sought using signal-to-noise ratio analysis. Therefore, the response surface methodology was determined in a regression analysis, which was used to model the influence of the parameters on the performance. The fine droplets produced by the UN-MQL system penetrate effectively into the machining zone. Finally, the chip morphology, tool wear and surfaces of the machined parts were examined using optical microscopy to identify the chip formation mechanism in different machining conditions. Cutting tool wear were also examined using the SEM tests to quantify the tool wear zones under specific process parameters. Experimental results show that applying UN-MQL system reduces the surface roughness and tool wear by up to 30% in comparison to the conventional MQL system.

Keywords

Main Subjects

References

[1] Benardos, P. G., and Vosniakos, G. C., 2003, “Predicting Surface Roughness in Machining: A Review,” Int. J. Mach. Tools Manuf., 43(8), pp. 833–844.
[2] Puertas Arbizu, I., and Luis Pérez, C. J., 2003, “Surface Roughness Prediction by Factorial Design of Experiments in Turning Processes,” J. Mater. Process. Technol., 143–144(1), pp. 390–396.
[3] Jayaraman, P., and Mahesh kumar, L., 2014, “Multi-Response Optimization of Machining Parameters of Turning AA6063 T6 Aluminium Alloy Using Grey Relational Analysis in Taguchi Method,” Procedia Eng., 97, pp. 197–204.
[4] Park, K. H., Olortegui-Yume, J., Yoon, M. C., and Kwon, P., 2010, “A Study on Droplets and Their Distribution for Minimum Quantity Lubrication (MQL),” Int. J. Mach. Tools Manuf., 50(9), pp. 824–833.
[5] Ozcelik, B., Kuram, E., Huseyin Cetin, M., and Demirbas, E., 2011, “Experimental Investigations of Vegetable Based Cutting Fluids with Extreme Pressure during Turning of AISI 304L,” Tribol. Int., 44(12), pp. 1864–1871.
[6] Tawakoli, T., Hadad, M. J., and Sadeghi, M. H., 2010, “Investigation on Minimum Quantity Lubricant-MQL Grinding of 100Cr6 Hardened Steel Using Different Abrasive and Coolant-Lubricant Types,” Int. J. Mach. Tools Manuf., 50(8), pp. 698–708.
[7] Lee, W. Y., Kim, K. W., and Sin, H. C., 2002, “Cutting Conditions for Finish Turning Process Aiming: The Use of Dry Cutting,” Int. J. Mach. Tools Manuf., 42(8), pp. 899–904.
[8] Tawakoli, T., Hadad, M., Sadeghi, M. H., Daneshi, A., and Sadeghi, B., 2011, “Minimum Quantity Lubrication in Grinding: Effects of Abrasive and Coolant-Lubricant Types,” J. Clean. Prod., 19(17–18), pp. 2088–2099.
[9] Hadad, M., and Beigi, M., 2021, “A Novel Approach to Improve Environmentally Friendly Machining Processes Using Ultrasonic Nozzle–Minimum Quantity Lubrication System,” Int. J. Adv. Manuf. Technol., 114(3–4), pp. 741–756.
[10] Hadad, M., 2015, “An Experimental Investigation of the Effects of Machining Parameters on Environmentally Friendly Grinding Process,” J. Clean. Prod., 108, pp. 217–231.
[11] Tawakoli, T., Hadad, M. J., Sadeghi, M. H., Daneshi, A., Stöckert, S., and Rasifard, A., 2009, “An Experimental Investigation of the Effects of Workpiece and Grinding Parameters on Minimum Quantity Lubrication-MQL Grinding,” Int. J. Mach. Tools Manuf., 49(12–13), pp. 924-932.
[12] Tosun and M. Huseyinoglu, “Effect of MQL on surface roughness in milling of AA7075-T6,” Material and Manufacturing Processes, vol. 25, no. 8, pp. 793-798, 2010.
[13] Kouam, V. Songmene, M. Balazinski, and P. Hendrick, “Effects of minimum quantity lubricating (MQL) conditions on machining of 7075-T6 aluminum alloy,” International Journal of Advanced Manufacturing Technology, vol. 79, no. 5-8, pp. 1325-1334, 2015.
[14] Cakir, S. Yagmur, N. Kavak, G. Kucukturk, and U. Seker, “The effect of minimum quantity lubrication under different parameters in the turning of AA7075 and AA2024 aluminium alloys,” International Journal Advanced Manufacturing Technology, vol. 84, no. 9-12, pp. 2515-2521, 2016.
[15] 2015, “Cutting Tools” [Online]. Available: jxjw@jxjtc. com.
[16] Elanders, M., 2006, Main Catalogue, Cromant, Sandavik.
[17] Sajjady, S. A., Nouri Hossein Abadi, H., Amini, S., and Nosouhi, R., 2016, “Analytical and Experimental Study of Topography of Surface Texture in Ultrasonic Vibration Assisted Turning,” Mater. Des., 93, pp. 311–323.
[18] Sudagar, J., Venkateswarlu, K., and Lian, J., 2010, “Dry Sliding Wear Properties of a 7075-T6 Aluminum Alloy Coated with Ni-P (h) in Different Pretreatment Conditions,” J. Mater. Eng. Perform., 19(6), pp. 810–818.
[19] Sutherland, J. W., Kulur, V. N., and King, N. C., 2000, “Experimental Investigation of Air Quality in Wet and Dry Turning,” CIRP Ann. - Manuf. Technol., 49(1), pp. 61–64.
[20] Nakayama, K., and Arai, M., 1992, “Comprehensive Chip Form Classification Based on the Cutting Mechanism,” CIRP Ann. - Manuf. Technol., 41(1), pp. 71–74.
[21] Worthington, B., and Rahman, M. H., 1979, “Predicting Breaking with Groove Type Breakers,” Int. J. Mach. Tool Des. Res., 19(3), pp. 121–132.
[22] Philip Selvaraj, D., Chandramohan, P., and Mohanraj, M., 2014, “Optimization of Surface Roughness, Cutting Force and Tool Wear of Nitrogen Alloyed Duplex Stainless Steel in a Dry Turning Process Using Taguchi Method,” Meas. J. Int. Meas. Confed., 49(1), pp. 205–215.
[23] Gaitonde, V. N., Karnik, S. R., and Davim, J. P., 2008, “Selection of Optimal MQL and Cutting Conditions for Enhancing Machinability in Turning of Brass,” J. Mater. Process. Technol., 204(1–3), pp. 459–464.
[24] Jeyapaul, R., Shahabudeen, P., and Krishnaiah, K., 2005, “Quality Management Research by Considering Multi-Response Problems in the Taguchi Method–a Review,” Int. J. Adv. Manuf. Technol., 26(11), pp. 1331–1337.

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