Examining of Tool Wear in Cryogenic Machining of Cobalt-Based Haynes 25 Superalloy

Authors: Murat Sarıkaya, Abdulkadir Güllü

Abstract:

Haynes 25 alloy (also known as L-605 alloy) is cobalt based super alloy which has widely applications such as aerospace industry, turbine and furnace parts, power generators and heat exchangers and petroleum refining components due to its excellent characteristics. However, the workability of this alloy is more difficult compared to normal steels or even stainless. In present work, an experimental investigation was performed under cryogenic cooling to determine cutting tool wear patterns and obtain optimal cutting parameters in turning of cobalt based superalloy Haynes 25. In experiments, uncoated carbide tool was used and cutting speed (V) and feed rate (f) were considered as test parameters. Tool wear (VBmax) were measured for process performance indicators. Analysis of variance (ANOVA) was performed to determine the importance of machining parameters.

Keywords: Cryogenic machining, difficult-to-cut alloy, tool wear, turning.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1107619

References:

[1] E. O. Ezugwu, “Improvements in the machining of aero-engine alloys using self-propelled rotary tooling technique,” Journal of Materials Processing Technology, vol. 185, pp. 60-71, 2007.
[2] Haynes, “High-Temperature Alloys – Haynes 25 alloy,” Haynes International Inc.,
[3] Tungaloy, “Products for Machining High Temp Alloy Materials,” Product Selection Guide No. 204, Tungaloy Inc., America.
[4] E. O. Ezugwu, “Key improvements in the machining of difficult-to-cut aerospace superalloys,” International Journal of Machine Tools & Manufacture, vol. 45, pp. 1353-1367, 2005.
[5] S. Aykut, E. Bagci, A. Kentli, O. Yazicioglu, “Experimental observation of tool wear, cutting forces and chip morphology in face milling of cobalt based super-alloy with physical vapour deposition coated and uncoated tool,” Materials and Design, vol. 28, pp. 1880-1888, 2007.
[6] V.S. Sharma, M. Dogra, N.M. Suri, “Cooling techniques for improved productivity in turning,” Int. J. Mach. Tools Manufact., vol. 49 (6), pp. 435-453, 2009.
[7] J. P. Davim, P. S. Sreejith, J. Silva, “Turning of brasses using minimum quantity of lubricant (MQL) and flooded lubricant conditions,” Materials and Manufacturing Processes, vol. 22 (1), pp. 45-50, 2007.
[8] N. R. Dhar, M. W. Islam, S. Islam, M. A. H. Mithu, “The influence of minimum quantity of lubrication (MQL) on cutting temperature, chip and dimensional accuracy in turning AISI-1040 steel,” Journal of Materials Processing Technology, vol. 171, pp. 93-99, 2006.
[9] M. I. Ahmed, A. F. Ismail, Y. A. Abakr, A. N. Amin, “Effectiveness of cryogenic machining with modified tool holder,” Journal of materials processing technology, vol. 185 (1), pp. 91-96, 2007.
[10] Z. Y. Wang, K. P. Rajurkar, “Cryogenic machining of hard-to-cut materials,” Wear, vol. 239 (2), pp. 168-175, 2000.
[11] M. Dhananchezian, M. P. Kumar, “Cryogenic turning of the Ti–6Al–4V alloy with modified cutting tool inserts,” Cryogenics, vol. 51 (1), pp. 34- 40, 2011.
[12] K. A. Venugopal, S. Paul, A. B. Chattopadhyay, “Growth of tool wear in turning of Ti-6Al-4V alloy under cryogenic cooling,” Wear, vol. 262 (9), pp. 1071-1078, 2007.
[13] D. Umbrello, F. Micari, I. S. Jawahir, “The effects of cryogenic cooling on surface integrity in hard machining: A comparison with dry machining,” CIRP Annals-Manufacturing Technology, vol. 61 (1), pp. 103-106, 2012.
[14] N. R. Dhar, M. Kamruzzaman, “Cutting temperature, tool wear, surface roughness and dimensional deviation in turning AISI-4037 steel under cryogenic condition,” International Journal of Machine Tools and Manufacture, vol. 47 (5), pp. 754-759, 2007.
[15] N. R. Dhar, S. Paul, A. B. Chattopadhyay, “The influence of cryogenic cooling on tool wear, dimensional accuracy and surface finish in turning AISI 1040 and E4340C steels,” Wear, vol. 249 (10), pp. 932-942, 2001.
[16] S. Paul, N. R. Dhar, A. B. Chattopadhyay, “Beneficial effects of cryogenic cooling over dry and wet machining on tool wear and surface finish in turning AISI 1060 steel,” Journal of Materials Processing Technology, vol. 116 (1), pp. 44-48, 2001.
[17] M. Sarıkaya, V. Yılmaz, H. Dilipak, “Modeling and multi-response optimization of milling characteristics based on Taguchi and gray relational analysis,” Proc IMechE Part B: J Engineering Manufacture, (2015), doi: 10.1177/0954405414565136
[18] M. Sarıkaya, A. Güllü, “Taguchi design and response surface methodology based analysis of machining parameters in CNC turning under MQL,” Journal of Cleaner Production, vol. 65, pp. 604-616, 2014.
[19] T. Kıvak, “Optimization of surface roughness and flank wear using the Taguchi method in milling of Hadfield steel with PVD and CVD coated inserts,” Measurement, vol. 50, pp. 19-28, 2014.