Impact of Machining Parameters on the Surface Roughness of Machined PU Block

Authors: Louis Denis Kevin Catherine, Raja Aziz Raja Ma’arof, Azrina Arshad, Sangeeth Suresh

Abstract:

Machining parameters are very important in determining the surface quality of any material. In the past decade, some new engineering materials were developed for the manufacturing industry which created a need to conduct an investigation on the impact of the said parameters on their surface roughness. Polyurethane (PU) block is widely used in the automotive industry to manufacture parts such as checking fixtures that are used to verify the dimensional accuracy of automotive parts. In this paper, the design of experiment (DOE) was used to investigate on the effect of the milling parameters on the PU block. Furthermore, an analysis of the machined surface chemical composition was done using scanning electron microscope (SEM). It was found that the surface roughness of the PU block is severely affected when PU undergoes a flood machining process instead of a dry condition. In addition the stepover and the silicon content were found to be the most significant parameters that influence the surface quality of the PU block.

Keywords: Polyurethane (PU), design of experiment (DOE), scanning electron microscope (SEM), surface roughness.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1337897

References:

[1] D. K. Back, T. J. Ko, H. S. Ko and H. S. Kim, “A Dynamic surface roughness model for face milling,” Precision Engineering, vol. 20, 1997, pp. 171-178.
[2] S. Neseli, S. Yaldiz and E. Turkes, “Optimization of Tool Geometry parameters for turning operations based on the response surface methodology,” Journal of Measurement, vol. 44(3), 2011, pp. 580-587.
[3] K. Popov, S. Dimov, A. vanov, D. T. Pham and E. Gandarias, “New tool-workpiece setting up technology for micro-milling,” International Journal of Advanced Manufacturing Technology, vol.47, 2010 pp. 21- 27.
[4] Y. Yung-Kuang, C. Ming-Tsam and L. Show-Shyan, “Optimization of dry machining parameters for high-purity graphite in end milling process via design of experiments methods,” Journal of Materials Processing Technology, vol. 209, 2009, pp. 4395-4400.
[5] F. Kuang-Hua and W. Chin-Fu, “A proposed statistical model for surface quality prediction in end milling of Al alloy,” International Journal of Machine Tools & Manufacture, vol. 35, 1995, pp. 1187-1200.
[6] S. Thamizhmanii, S. Sarapudin and S.Hasan, “Analysis of surface roughness by using Taguchi method,” Journal of Achievements in Materials and Manufacturing Engineering, vol. 20 (1-20), 2007, pp. 503-505.
[7] C. S. M. Son, H. S. Lim and J. H. Ahn, “Effects of the friction coefficient on the minimum cutting thickness in micro cutting,” International Journal of Machine Tools and Manufacture, vol. 45, 2005, pp. 529-535.
[8] M. Alauddin, M. A. ElBaradie and M. S. J. Hashmi, “Prediction of tool life in end milling by response surface methodology,” Journal of Materials Processing Technology, vol. 71, 1997, pp. 456-465.
[9] M. Hasegawa, A. Seireg and R.A. Lindberg, “Surface roughness model for turning,” Tribology International, vol. 2, 285–289. December 1976.
[10] O. B. Abouelatta and J. M´adl, “Surface roughness prediction based on cutting parameters and tool vibrations in turning operations,” Journal of Materials Processing Technology, vol. 118, 2001, pp. 269–277.
[11] E. Erisken, “Influence from production parameters on the surface roughness of a machine short fibre reinforced thermoplastic,” International Journal of Machine Tools and Manufacture, vol. 39 (10), 1999, pp. 1611–1618.
[12] Y. Su, N. He, L. Li and X. L. Li, “An experimental investigation of effects of cooling/lubrication conditions on tool wear in high speed end milling of Ti-6Al-4V,” Journal of Wear, vol. 261, 2006, pp. 760-766.
[13] Z. Y. Wang and K. P. Rajurkar, “Cryogenic machining of hard-to- cut materials,” Journal of Wear, vol. 239, 2000, pp. 168–175.
[14] Y. S. Hong and Y. C. Ding, “Cooling approaches and cutting temperatures in cryogenic machining of Ti-6Al-4V”, International Journal of Machine Tools and Manufacture, vol. 4, 2001, pp. 1417– 1437.
[15] B. Yalçın, A. E. Özgür and M. Koru, “The effects of various cooling strategies on surface roughness and tool wear during soft materials milling”, Journal of Materials and Design, vol. 30, 2009, pp. 896–89.
[16] D. Dingley, “Progressive Steps in the Development of Electron Backscatter Diffraction and Orientation Imaging Microscopy,” Journal of Microscopy, vol. 213 (3), 2004, pp. 214-224.
[17] S. Thomas, S. Turner and M. Jackson, “Microstructural Damage during High-speed Milling of Titanium Alloys”, Journal of Scripta Materialia, vol. 62, 2010, pp. 250-253.
[18] A. Yamamoto, T. Yamada, S. Nakhigashi, L. Liu, M. Teresawa and H. Tsubakino, “Effects of surface grinding on hardness distribution and residual stress in Low carbon austentic stainless steel SUS316l” Journal of Iron and Steel Institute of Japan International, vol. 44 (10), 2004, pp. 1780-1782.
[19] S. To, W. B.Lee and C. F. Cheung, “Orientation Changes of Aluminium Single Crystals in Ultra-precision Diamond Turning,” Journal of Materials Processing Technology, vol. 140 (1-3), 2003, pp. 346-351.
[20] S. Thamizhmanii, S. Sarapudin and S. Hasan, “Analysis of surface roughness by using Taguchi method”, Journal of Achievements in Materials and Manufacturing Engineering, vol. 20 (1-20), 2007, pp. 503-505.