An investigation of the effects of cryogen application direction on Ti6Al4V alloy milling

Year 2021, Volume: 2 Issue: 2, 42 - 48, 30.12.2021

Erkan Bahçe , Eray Sarıgül

Abstract

Titanium and its alloys are materials with high hardness and strength. Because of these properties, titanium and its alloys are usually machined with carbide or diamond tools. However, the occurrence of high temperatures during processing elongates the processing time and hence reduces efficiency. The use of coolants is a viable technique to reduce the temperature in the processing of such hard materials. Because of the negative environmental impacts of conventional cutting fluids, cryogenic processing has become an alternative approach. The effects of cryogen usage in the milling of Ti6Al4V alloy with carbide tool were evaluated in this work together with dry machining. Cryogen was applied in two different directions, in the front and back of the tool. The effects of the cooling technique on surface roughness and burr formation were evaluated at the end of the experiment. When the cryogen was applied from the back of the tool, the surface quality was the best. Burr formation was observed to occur more frequently during dry machining.

Keywords

Burr formation, chip, cryogenic cooling, titanium alloy.

References

• [1] Machado, A. R., & Wallbank, J. (1990). Machining of titanium and its alloys—a review. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 204(1), 53–60. https://doi.org/10.1243/PIME_PROC_1990_204_047_02
• [2] Zoya, Z. A., & Krishnamurthy, R. (2000). The performance of CBN tools in the machining of titanium alloys. Journal of Materials Processing Technology, 100(1–3), 80–86. https://doi.org/10.1016/S09240136(99)00464-1
• [3] Niknam, S. A., Zedan, Y., & Songmene, V. (2012, May 16–18). Burr formation during milling of wrought aluminum alloys. 20th Annual International Conference on Mechanical Engineering-ISME2012 School of Mechanical Eng., Shiraz University, Shiraz, Iran
• [4] Adeniji, D., Schoop, J., Gunawardena, S., Hanson, C., & Jahan, M. (2020). Characterization and modeling of surface roughness and burr formation in slot milling of polycarbonate. Journal of Manufacturing and Materials Processing, 4(2), 59. https://doi.org/10.3390/jmmp4020059
• [5] Schoop, J., Effgen, M., Balk, T. J., & Jawahir, I. S. (2013). The effects of depth of cut and pre-cooling on surface porosity in cryogenic machining of porous tungsten. Procedia CIRP, 8, 357–362. https://doi.org/10.1016/j.procir.2013.06.116
• [6] Bahce, E., & Ozel, C. (2018). Influence of a stepped feed rate on burr formation when drilling Al-5005. Materials Testing, 60(3), 316–324. https://doi.org/10.3139/120.111154
• [7] Hashimura, M., Hassamontr, J., & Dornfeld, D. A. (1999). Effect of in-plane exit angle and rake angles on burr height and thickness in face milling operation. Journal of Manufacturing Science Engineering, 121(1): 13–19. https://doi.org/10.1115/1.2830566
• [8] Jones, S. D., & Furness, R. J. (1997). An experimental study of burr formation for face milling 356 aluminums. Transactions-North American Manufacturing Research Institution of SME, 183-188.
• [9] Lekala, M. B., Van Der Merwe, J. W., & Pityana, S. L. (2012). Laser surface alloying of 316L stainless steel with Ru and Ni mixtures. International Journal of Corrosion, Article 162425. https://doi.org/10.1155/2012/162425
• [10] Ucun, I., Aslantaş, K., & Bedir, F. (2015). The effect of minimum quantity lubrication and cryogenic pre-cooling on cutting performance in the micro milling of Inconel 718. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 229(12), 2134-2143. https://doi.org/10.1177/0954405414546144
• [11] Jawahir, I. S., Attia, H., Biermann, D., Duflou, J., Klocke, F., Meyer, D., & Umbrello, D. (2016). Cryogenic manufacturing processes. CIRP Annals, 65(2), 713-736. https://doi.org/10.1016/j.cirp.2016.06.007
• [12] Fernández, D., Sandá, A., & Bengoetxea, I. (2019). Cryogenic milling: Study of the effect of co2 cooling on tool wear when machining Inconel 718, Grade EA1N Steel and Gamma TiAl. Lubricants, 7(1), 10. https://doi.org/10.3390/lubricants7010010
• [13] Huang, X., Zhang, X., Mou, H., Zhang, X., & Ding, H. (2014). The influence of cryogenic cooling on milling stability. Journal of Materials Processing Technology, 214(12), 3169-3178. https://doi.org/10.1016/j. jmatprotec.2014.07.023
• [14] Kaynak, Y., Lu, T., & Jawahir, I. S. (2014). Cryogenic machining-induced surface integrity: a review and comparison with dry, MQL, and flood-cooled machining. Machining Science and Technology, 18(2), 149-198. https://doi.org/10.1080/10910344.2014.897836
• [15] Shokrani, A., & Newman, S. T. (2019). A new cutting tool design for cryogenic machining of Ti–6Al–4V titanium alloy. Materials, 12(3), 477. https://doi.org/10.3390/ma12030477
• [16] Jamil, M., Khan, A. M., Hussien, H., Gong, L., Mozammel, M., Gupta, M. K., & He, N. (2019). Effects of hybrid Al 2 O 3-CNT nanofluids and cryogenic cooling on machining of Ti–6Al–4V. The International Journal of Advanced Manufacturing Technology, 102(9-12), 3895-3909.
• [17] Hegab, H., Kishawy, H. A., Gadallah, M. H., Umer, U., & Deiab, I. (2018). On machining of Ti-6Al-4V using multi-walled carbon nanotubes-based nano-fluid under minimum quantity lubrication. The International Journal of Advanced Manufacturing Technology, 97. https://doi.org/10.1007/s00170-018-2028-4.
• [18] Shah, P., Khanna N., Maruda W.R., Gupta M.K., & Krolczyk G. M. (2021). Life cycle assessment to establish sustainable cutting fluid strategy for drilling Ti-6Al-4V. Sustainable Materials and Technologies, 30, 37. https://doi.org/10.1016/j.susmat.2021.e00337
• [19] Razavykia, A., Delprete, C., & Baldissera, P. (2019). Correlation between microstructural alteration, mechanical properties and manufacturability after cryogenic treatment: A review. Materials, 12(20), 3302. https://doi.org/10.3390/ma12203302
• [20] Yousuf, A. Y., Wang. Z., Fu, X., Chen, L., & Fang, J. (2021). Research on Effect of Cryogenic Coolants on Machinability Characteristics in Machining Ti-6Al-4V. Journal of Physics: Conference Series, 1948 012202. https://doi.org/10.1088/17426596/1948/1/012202
• [21] Lubis, S. M., & Darmawan’Adianto, S. (2019, April). Effect of cutting speed on temperature cutting tools and surface roughness of AISI 4340 steel. In IOP Conference Series: Materials Science and Engineering (Vol. 508, No. 1, p. 012053). IOP Publishing. https://doi.org/10.1088/1757-899X/508/1/012053.
• [22] Weule, H., Hüntrup, V., & Tritschler, H. (2001). Micro-cutting of steel to meet new requirements in miniaturization. CIRP Annals, 50(1), 61-64. https://doi.org/10.1016/S0007-8506(07)62071-X