Tool Wear and Surface Roughness Evolution in Hole Making Process of Inconel 718

Article Preview

Abstract:

The paper focuses on tool wear and surface roughness indicators evaluation associated with hole making of nickel based super alloy Inconel 718 widely used in aero engine industry. Within study of tool wear and surface integrity, series of experimental tests were performed on an Inconel 718 specimen. Special attention was paid to ensure that the cutting conditions correspond to the industrial practice. Two steps of hole making sequence consists of a drilling process applying a twist drill that removes most of the stock. This operation is followed by a second machining process, typically applying a face – cutting finisher (reamer), which removes an additional (radial) stock between 0.1 mm to 0.25 mm per side. Tool wear appeared predominantly as flank wear VBmax and evolution of surface roughness Ra and Rz has a similar trend for drilling and finishing.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

11-17

Citation:

Online since:

August 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] A. Devillez, G. Le Coz, S. Dominiak, D. Dudzinski, Dry machining of Inconel 718, workpiece surface integrity, Journal of Material Processing Technology. 211 (2011) 1590-1598.

DOI: 10.1016/j.jmatprotec.2011.04.011

Google Scholar

[2] F. Pusavec, H. Hamdi, J. Kopac, I. S. Jawahir, Surface integrity in cryogenic machining of nickel based alloy – Inconel 718, Journal of Material Processing Technology. 211 (2011) 773-783.

DOI: 10.1016/j.jmatprotec.2010.12.013

Google Scholar

[3] J. Esslinger, Extreme Anforderung an besondere Marialien, Skriptum zur Vorlesung Werkstoffkunde, Munich, (2006).

Google Scholar

[4] R. Buergel, Handbuch Hochtemperaturwerkstoffe, 3rd Issue, Vieweg – Verlag, Wiesbaden. (2006).

Google Scholar

[5] N. Beer, E. Özkaya, D. Biermann, Drilling of Inconel 718 with geometry – modified twist drills, Procedia CIRP. 24 (2014) 49–55.

DOI: 10.1016/j.procir.2014.07.124

Google Scholar

[6] P. Adam, Fertigungsverfahren von Turboflugtriebwerken, 1rd Issue, Birkhäuser – Verlag, (1998).

Google Scholar

[7] C. T. Sims, N. S. Stoloff, N. S. Hagel, Superalloys II, John Wiley&Sons, New York. (1986).

Google Scholar

[8] A. R. C. Sharman, A. Amarasinghe, K. Ridgway, Tool life and surface integrity aspects when drilling and hole making in Inconel 718, Journal of Material Processing Technology. 200 (2008) 424-432.

DOI: 10.1016/j.jmatprotec.2007.08.080

Google Scholar

[9] Y. S. Liao, R. H. Shiue, Carbide tool wear mechanism in turning of Inconel718 superalloy, Wear 193 (1996) 16–24.

DOI: 10.1016/0043-1648(95)06644-6

Google Scholar

[10] D. G. Thakur, B. Ramamoorthy, L. Vijayaraghavan, Study on the machinability characteristics of superalloy Inconel 718 during high speed turning, Materials and Design 30 (2009) 1718–1725.

DOI: 10.1016/j.matdes.2008.07.011

Google Scholar