The Effect of Chilled Air on Burr Formation When Drilling Aluminium Alloy in Manufacturing Industry
Abstract
Burr formation is a major challenge during drilling which could cause poor assembly and may lead to part rejection. One of the factors which could result in an increment of burr height and deteriorating the hole quality is poor selection of cutting parameters and drilling environment. aluminium alloy (Al7075) is usually drilled in dry condition due to the concern over the use and disposal of cutting fluid which could lead to environmental pollution. However, dry drilling can cause high heat generation which can highly influence the burr formation. Therefore, this research aims to investigate the effectiveness of chilled air as a cooling medium in drilling Al7075 to improve the machined surface integrity in aspects of burr formation. Drilling operations of Al7075 were performed at cutting speeds and feed rates of 82 - 123 m/min and 0.01 - 0.1 mm/rev. The lowest burr height was obtained when drilling using the higher cutting speed and feed rate of 123 m/min and 0.01 mm/rev. Whereas, the lowest burr thickness was obtained when drilling using the lower cutting speed and feed rate of 82 m/min and 0.01 mm/rev. This indicates that the use of chilled air when drilling Al7075 is favorable to reduce the burr formation at higher cutting speed and feed rate hence improving the productivity.
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Bahçe, E., & Özdemir, B. (2019). Investigation of the burr formation during the drilling of free-form surfaces in al 7075 alloy. Journal of Materials Research and Technology, 8(5), 4198–4208. https://doi.org/10.1016/j.jmrt.2019.07.028
Aamir, M., Giasin, K., Tolouei-rad, M., & Vafadar, A. (2020). A review : drilling performance and hole quality of. Integrative Medicine Research, 9(6), 12484–12500. https://doi.org/10.1016/j.jmrt.2020.09.003
Uddin, M., Basak, A., Pramanik, A., Singh, S., Krolczyk, G. M., & Prakash, C. (2018). Evaluating hole quality in drilling of Al 6061 alloys. Materials, 11(12), 1–14. https://doi.org/10.3390/ma11122443
Abdelhafeez Hassan, A., Li, M. J., & Mahmoud, S. (2020). On Miniature Hole Quality and Tool Wear When Mechanical Drilling of Mild Steel. Arabian Journal for Science and Engineering, 45(11), 8917–8929. https://doi.org/10.1007/s13369-020-04549-9
Li, S., Zhang, D., Liu, C., & Tang, H. (2020). Exit burr height mechanistic modeling and experimental validation for low-frequency vibration-assisted drilling of aluminum 7075-T6 alloy. Journal of Manufacturing Processes, 56(May), 350–361. https://doi.org/10.1016/j.jmapro.2020.04.083
Thakre, A. A., & Soni, S. (2016). Modeling of burr size in drilling of aluminum silicon carbide composites using response surface methodology. Engineering Science and Technology, an International Journal, 19(3), 1199–1205. https://doi.org/10.1016/j.jestch.2016.02.007
Singh, J., Garg, K., & Singh, P. (2018). Optimization of Performance Parameters in Drilling Process for Minimizing the Burr Formation. 7(November), 127–131.
Rana, A., Dongre, G., & Joshi, S. S. (2019). Analytical modeling of exit Burr in drilling of Ti6Al4V alloy. Indian Academy of Sciences, 0123456789(44), 133.
Asok, P., & Chockalingam, P. (2014). Dry and compressed air cooling comparative study on 6061 aluminium alloy drilling using coated drill. Advanced Materials Research, 903(February 2014), 45–50. https://doi.org/10.4028/www.scientific.net/AMR.903.45
Kundu, S., Das, S., & Saha, P. P. (2014). Optimization of drilling parameters to minimize burr by providing back-up support on aluminium alloy. Procedia Engineering, 97(December), 230–240. https://doi.org/10.1016/j.proeng.2014.12.246
Boswell, B., & Islam, M. N. (2016). Sustainable cooling method for machining titanium alloy. IOP Conference Series: Materials Science and Engineering, 114(1). https://doi.org/10.1088/1757-899X/114/1/012021
Yazman, Ş., Köklü, U., Urtekin, L., Morkavuk, S., & Gemi, L. (2020). Experimental study on the effects of cold chamber die casting parameters on high-speed drilling machinability of casted AZ91 alloy. Journal of Manufacturing Processes, 57(May), 136–152. https://doi.org/10.1016/j.jmapro.2020.05.05
DOI: http://dx.doi.org/10.52155/ijpsat.v28.1.3412
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