Effect of Rake Face Reinforcement on Cutting Tool Life of Cemented Carbide Tools during Turning of a-Titanium Alloy

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O. O. Awopetu


This study analysed the wear mechanism of different cemented carbide tool and the effect of reinforcing the rake face of the best wear resistant cemented carbide tool during the turning of a-titanium alloys as a means of determining the most appropriate cutting tool and optimum tool geometry for the cutting operation. Three titanium alloys: BTJ.00, BT3-1 and BT-5.1 were used as the work piece materials. The cutting tools used are cemented carbide tools BK8, BK6, BK60M, BKJ00M, BKJ0X0M, T5KJ0 and Tl5K6. The cemented carbide tools come under the Russia standard (GOST). The cutting operations were carried out dry for the three work piece materials used. Cutting conditions chosen are; cutting speed, v, between 40-60m/min; cutting feed, s, 0.3mm/rev; and cutting depth, t, 1.5mm. The peculiarity of contact flow process and the wear tendency of the cemented carbide tools account for the necessity to reinforce the rake face with a negative fascia. In respect of this, the fascia has the following parameters: rake face=00, supporting fascia= -150, width of supporting fascia= 0.20-0.25mm. Results of the experiment helps to determine the optimum cutting speed and parameters of type of tool materials that suit different types of production.

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Alexander, J.M.; Brewer, R.C.; and Rowe, G.W. 1987. Manufacturing Technology, Vol. 1: Engineering Materials. Ellis Horwood, Chichester, West Sussex, England.

Awopetu, 0.0.; Talantov, N.V.; Kurchenko, A.I.; and Utkin, E.F. 1995. Cutting Forces during Turning of a -Titanium Alloy BT5. Russian Academy of Science. Institute of Scientific and Technical Information, Moscow 232(8): 25-27.

Choudhury, S.K. and Ratch, S. 2000. In process tool wear estimation in milling using cutting force model. Journal of Materials Processing Technology, vol. 99(1-3), pp. 113-119.

Dandekar, C.R.; Shin, Y.C. and Barnes, J. 2010. Machinability improvement of titanium alloy (Ti-6Al-4V ) via LAM and hybrid machining." International Journal of Machine Tools and Manufacture, vol. 50 (2), pp. 174- 182.

Ezugwu, E.O. and Wang, Z.M. 1997. Titanium alloys and their machinability - a review Original Research." Article Journal of Materials Processing Technology, vol. 68 (3), pp. 262-274.

Ezugwu E.O., 2005. Key improvements in the machining of difficult-to-cut aerospace superalloys." International Journal of Machine Tools and Manufacture, vol.45 (12- 13), pp. 1353-1367.

Ezugwu E.O., Fadare D.A., Bonney, Da Silva R.B., and Sales W.F., 2005. Modelling the correlation between cutting and process parameters in high speed machining of Inconel 718 alloy using an artificial neural network., International Journal of Machine Tools & Manufacture, vol. 45 (12-13), pp. 1375-1385.

Hong, S.Y.; Markus, I. and Jeong, W. 2001. New cooling approach and tool life improvement in cryogenic machining of titanium alloy Ti-6Al-4V. International Journal of Machine Tools & Manufacture vol. 41(15), pp. 2245- 2260.

Hong S. Y., Ding Y., and Jeong W., 2001. Friction and cutting forces in cryogenic machining of Ti-6Al 4V. International Journal of Machine Tools and Manufacture, vol. 41 (15), pp. 2271-2285.

Isik, Y. 2007. Investigation of the machinability of tool steels in turning operations. Materials and Design, vol. 28 (5), pp. 1417-1424.

International Standard Organization (ISO). Classification and Application of Hard Cutting Materials for Metal Removal with Defined Cutting Edges - Designation of the Main Groups and Groups of Application. (ISO 513:2004), Geneva: ISO, 2004.

Kalpakjian, S. and Schmid, S.R. 2006. Manufacturing Engineering and Technology. 5th ed. Upper Saddle River, NJ: Prentice Hall.

Kannan S., Kishawy H.A. and Deiab I., 2009. Cutting forces and TEM analysis of the generated surface during machining metal matrix composites." Journal of Materials Processing Technology, vol. 209(5), pp. 2260-2269.

Komanduri, R.; and Hou, Z. 2002. On Thermoplastic Shear Instability in the Machining of a Titanium Alloy (Ti-6Al-4V). Metal. Mat. Trans. 33(9): 2995-3010.

Metals Handbook - Desk Edition. 1989. American Society of Metals (ASM). Metals Park, Ohio, USA pp. 27.11-27.13.

Poduraev, V.N. 1974. Cutting of Materials with Low Machinability Properties. Vishaya Shkola Publishers, Moscow pp 125-130.

Talantov, N.V. 1992. Physical Fundamentals of Cutting Processes, Wear and Chattering of Cutting Tools. Machine√ā¬≠building, Moscow, USSR.

Trent, E.M. 1984. Metal Cutting, Second ed .. Butterworths, London pp.118-157, 215-218.

Zhang S., Li J.F., Wang Y.W., 2012. Tool life and cutting forces in end milling of Inconel 718 under dry and minimum quantity cooling lubrication cutting conditions." Journal of Cleaner Production, vol. 32, pp. 81-87.

Ahsan K.B., Mazid A.M., Clegg R.E. and Pang G.K.H. (2012). Study on Carbide Cutting Tool Life Using Various Speeds for a-13 Ti Alloy Machining. Journal of Achievements in Materials and Manufacturing Engineering (JAMME). Volume 55 Issue 2 pp 600-606.

Findes B., Boutabba S., Findes M., Aouici H. and Yallese M.A. (2013). Tool Life Evaluation of Cutting Materials in Hard Turning of AlSl Hll. Estonian Journal of Engineering, 2013, 19, 2,pp 143- 151.

Sugihara T. and Enomoto T. (2015). High Speed Machining of Inconel 718 Focusing on Tool Surface Topography of CBN Tool. 43rd Proceedings of the North American Manufacturing Research Institute of SME, Procedia Manufacturing. 2015,pp 1- 8.