Effect of Mechanical Tumbling Parameters on Surface Roughness and Edge Radius of Medical Grade Cobalt Chromium Alloy

Is Prima Nanda, Mohd Hazwan Hassim, Mohd Hasbullah Idris, Muhammad Hafiz Jahare, Andril Arafat


Smoothly polished prosthesis surface is a crucial requirement in medical application and important feature that determine the proper response to corrosion and biocompatibility in the human body. Tumbling is one of the pre-polishing processes that can be conducted in order to improve the surface roughness of the machined prosthesis. However, the using of ceramic media for the tumbling process in medical application is not widely reported. This study was conducted to investigate the effect of mechanical tumbling parameters on the surface roughness of medical grade CoCr alloy by using alumina (Al2O3) based ceramic media. The experiment was performed with a different level of rotational speed (35, 55, and 75 rpm) and soaking time (4, 6 and 8 hours) of the tumbling process. The surface roughness of specimens before and after the process was measured using Mitutoyo Formtracer CS-5000 and the edge radius was measured using Olympus SZX9 microscope integrated with I-solution Lite software. It was figured that 6 hours tumbling time at 55 rpm showed the most significant reduction (32 %) in surface roughness (Ra) of the CoCr alloy specimen, while 8 hours tumbling time at 75 rpm showed the highest effect on the edge radius of the specimen at 63 % increment.


CoCr alloys; medical application; mechanical tumbling; surface finish.

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Abdul Ajiz, Gunawarman, Jon Affi (2015). The Effects of Short-Time Solution Treatment and Short-Time Aging on Mechanical Properties of Ti-6Al-4V for Orthopaedic Applications. International Journal on Advance Science Engineering Information Technology, 5 (4): 329-334.

Abdel MP, Oussedik S, Parrate S, Lustig S, and Haddad FS (2014). Coronal Allignment in Total Knee Replacement: Historical Review, Contemporary Analysis, and Future Direction. Bone Joint J, 96:857-862.

Z. Oksiuta, J. R. Dabrowski, and A. Olszyna (2009). Co-Cr-Mo based composite reinforced with bioactive glass. J. Mater. Process. Technol., vol. 209:978-985.

Allen, A.N., Laun, J. and Brown, A. C. A. “Roughness and Reflectivity of Mass Finished 6061 T6 Al Surfaces” (2006). Major Qulifying Project. Worcester Polytechnic Institute.

Huang, N. M. (2012). Analyzing the Surface Finish of Knee Implants to Determine Criteria for Applications in Direct Metal Laser Sintering. Proceedings of the National Conference on Undergraduate Research (NCUR).

J. L. Zakrzewski, M. R. M. van den Brink, and J. A. Hubbell (2014). Overcoming immunological barriers in regenerative medicine. Nat Biotech, vol. 32: 786–794.

Alallak, A. and Lundholm, T, “Deburring of components A survey of current and future deburring processes” (2010). Master Thesis. Uppsala University.

Buddy D. Ratner, Allan S. Hoffman, Frederick J. Schoen and Jack E. Lemons, Biomaterials Science: An Introduction to Materials in Medicine. Academic Press. 2004.

A. Boschetto, L. Bottini and F. Veniali. (2013). Microremoval modeling of surface roughness in barrel finishing. The International Journal of Advanced Manufacturing Technology. 69(9-12):2343-2354.

Safian Sharif, Ibrahim Ogu Sadiq, Noordin Mohd Yusof, Amrifan Saladin Mohruni (2017). A Review of Minimum Quantity Lubrication Technique with Nanofluids Application in Metal Cutting Operations. International Journal on Advance Science Engineering Information Technology, 7 (2): 587-593.

Hinde, A.L. & Kalala, J.T. (2009). The application of a simplified approach to modelling tumbling mills, stirred media mills and HPGR’s. Minerals Engineering, 22(7-8):633–641.

Ryu, J.J. & Shrotriya, P., (2013). Influence of roughness on surface instability of medical grade cobalt-chromium alloy (CoCrMo) during contact corrosionfatigue. Applied Surface Science, 273, pp.536–541.

Pradyot Patnaik (2002). Handbook of Inorganic Chemicals. McGraw-Hill, New York.

Hashimura, M., Chang, Y. P., Dornfeld, D. (1999) Analysis of Burr Formation Mechanism in Orthogonal Cutting, Journal of Manufacturing Science and Engineering, 121: 1-7.

Gillespie, LaRoux K. 2000c. “State of the Art in Deburring and Edge Finishing in the US in 2000.” Proceedings of the 6th International Deburring and Surface Finishing Conference. St. Petersburg, Russia.

Ali Alallak (2010). Deburring of components; A survey of current and future deburring processes. Master’s Thesis in Production Engineering. Kungliga Tekniska högskolan.

Henein, H., Brimacombe, J.K., Watkinson, A.P., 1983. Experimental study of trans-verse bed motion in rotary kilns. Metall. Trans. B 14B, 191–205.

Boateng, A.A., 1998. Boundary layer modeling of granular flow in the transverseplane of a partially filled rotating cylinder. Int. J. Multiph. Flow 24 (3), 499–521.

Boschetto, A., Veniali, F., 2009. Workpiece and media tracking in barrel finishing. Int.J. Mach. Mach. Mater. 6 (3–4), 305–321.

Mellmann, J., 2001. The transverse motion of solids in rotating cylinders – forms ofmotion and transition behaviour. Powder Technol. 118, 251–270.

Pérez-Alonso, C., Delgadillo, J.A., 2012. Experimental validation of 2D DEM code bydigital image analysis in tumbling mills. Miner. Eng. 25 (1), 20–27.

Nakagawa, M., 1997. NMRI study: axial migration of radially segregated core ofgranular mixtures in a horizontal rotating cylinder. Chem. Eng. Sci. 52 (23), 4423–4428.

Bbosa, L.S., Govender, I., Mainza, A.N., Powell, M.S., 2011. Power draw estimationsin experimental tumbling mills using PEPT. Miner. Eng. 24 (3-4), 319–324.

Domblesky J, Evans R, Cariapa V (2004) Material Removal Model for Vibratory Finishing. International Journal of Production Research 42(5):1029–1041.

Hashimoto F, Johnson SP, Chaudhari RG (2016) Modeling of Material Removal Mechanism in Vibratory Finishing Process. Annals of the CIRP 65(1):325–328.

Uhlmann E, Eulitz A, Dethlefs A (2015) Discrete Element Modelling of Drag Finishing. Procedia CIRP 31:369–374.

Naeini SE, Spelt JK (2011) Development of Single-cell Bulk Circulation in Granular Media in a Vibrating Bed. Powder Technology 211:176–186.

Doulgeris, James, "Biomechanical Comparison of Titanium and Cobalt Chromium Pedicle Screw Rods in an Unstable Cadaveric Lumbar Spine" (2013). Graduate Theses and Dissertations. University of South Florida.

N. Ramachandran, S. S. Pande, N. Ramakrishnan. (1994). The role of deburring in manufacturing: A state-of-the-art survey. Journal of Materials Processing Technology 44(1-2):1-13.

F. Hashimoto and D. B. DeBra (1996) Modelling and Optimization of Vibratory Finishing Process. CIRP Annals. 45(1):303-306.

Singh, R., Walia, R.S. & Suri, N.M. (2012). Study of Parametric Effect on Surface Roughness Improvement for Hibrid Centrifugal Force Assisted Abrasive Flow Machining Process, International journal of Latest Research in Science and Technology, 1(3):198–201.

Bańkowski Damian, Krajcarz Daniel, Młynarczyk Piotr (2017). Deburring and smoothing the edges using vibro-abrasive machining. Procedia Engineering 192: 28 – 33.

DOI: http://dx.doi.org/10.18517/ijaseit.9.1.4797


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