Predictive Modeling and Investigation on the Formation of Stiff Air-Layer around the Grinding Wheel

Abstract:

In grinding process, a stiff air layer is generated around the wheel periphery due to high surface speed of the porous grinding wheel. This stiff air layer restricts grinding fluid to reach deep inside the grinding zone. The formation of stiff air layer has been studied experimentally by obtaining the variation of air pressure around the wheel periphery under different wheel speeds. With the help of the experimental data, a mathematical model has been developed to predict the pressure of the stiff layer of air under different wheel speed. From the model it is found that at close proximity to the wheel, air pressure obtained is very high, and this establishes quantitatively the formation of stiff air layer around the grinding wheel.

• Periodical: Advanced Materials Research (Volumes 83-86)
• Pages: 654-660
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.83-86.654
• Online since: December 2009
• Authors: Bijoy Mandal, Sujit Majumdar, Santanu Das, Simul Banerjee
• Keywords: Air Pressure, Analysis of Variance (ANOVA), Grinding Wheel, Model

References

[1] A. Bhattacharya: Metal Cutting Theory and Practice (New Central Book Agency (P) Ltd., Calcutta, 1984).

[2] S. Malkin: Grinding Technology-Theory and Application of Machining with Abrasives (Ellis Horwood, New York, 1989).

[3] P. K. Kundu, S. Das, S. Sinha and P. P. Chowdhury: On Grinding Wheel Performance in Dry and Wet conditions, Proceedings of the 4 th International Conference on Mechanical Engineering, Dhaka, 2001, pp.19-24.

[4] R. S. Sarmacharya, M. N. George and S. Das: On the Grinding Wheel Performance through Minor Wheel Modification, Proceedings of the 18 th AIMTDR Conference, Kharagpur (1998), pp.156-161.

[5] S. Ebbrell, N. H. Woolley, Y. D. Tridimas, D. R. Allanson, W. B. Rowe: The Effect of Cutting Fluid Application methods on the Grinding Process, International Journal of Machine Tools & Manufacture, Vol. 40 (2000), pp.209-223.

DOI: 10.1016/s0890-6955(99)00060-7

[6] T. Dutta, S. Ghosal and S. Banerjee: Development of a Simple Technique for Enhancing the Fluid Flow through the Grinding Zone, Proceedings of the 21st AIMTDR Conference (2004), pp.109-114.

[7] S. Banerjee, S. Ghosal, T. Dutta: Development of Simple Technique for Improving the Efficiency of Fluid Flow through the Grinding Zone, Journal of Materials Processing Technology, Vol. 197(1-3) (2008), pp.306-319.

DOI: 10.1016/j.jmatprotec.2007.06.045

[8] F. Engineer, C. Guo and S. Malkin: Experimental Measurement of Fluid Flow Through the Grinding Zone, Journal of Engineering for Industry, Vol. 114 (Issue February 1992), pp.61-66.

DOI: 10.1115/1.2899759

[9] K. Ramesh, H. Hunga and L. Yin: Analytical and Experimental Investigation of Coolant Velocity in High Speed Grinding, International Journal of Machine Tools & Manufacture, Vol. 44 (2004), pp.1070-1076.

DOI: 10.1016/j.ijmachtools.2004.02.017

[10] R.D. Monici, E.C. Bianchi, R.E. Catai and P.R. de Aguiar: Analysis of The Different Forms of Application and Types of Cutting Fluid Used in Plunge Cylindrical Grinding Using Conventional and Superabrasive CBN Grinding Wheels, International Journal of Machine Tools & Manufacture, Vol. 46 (2006).

DOI: 10.1016/j.ijmachtools.2005.05.009

[11] S. Paul and A.B. Chattopadhyay: A Study of Effects of Cryo-Cooling in Grinding, International Journal of Machine Tools & Manufacture, Vol. 36 (1995), pp.109-117.

DOI: 10.1016/0890-6955(95)80010-7

[12] S. Paul and A.B. Chattopadhyay: The Effect of Cryogenic Cooling on Grinding Forces, International Journal of Machine Tools & Manufacture, Vol. 46 (2006), pp.63-72.

DOI: 10.1016/0890-6955(95)92629-d

[13] T. Nguyen and L.C. Zang: An Asessment of the Applicability of Cold Air and Oil Mist in Surface Grinding, Journal of Materials Processing Technology, Vol. 128 (2002), pp.67-72.

[14] H.Z. Choi, S.W. Lee and H.D. Jeong: The Cooling Effects of Compressed Cold Air in Cylindrical Grinding with Alumina and CBN Wheels, Journal of Materials Processing Technology, Vol. 127 (2002), pp.155-158.

DOI: 10.1016/s0924-0136(02)00117-6

[15] H.Z. Choi, S.W. Lee and H.D. Jeong: A Comparison of the Cooling Effects of Compressed Cold Air and Coolant for Cylindrical Grinding with a CBN Wheel, Journal of Materials Processing Technology, Vol. 127 (2001), pp.265-268.

DOI: 10.1016/s0924-0136(01)00531-3

[16] T. Nguyen and L.C. Zang, An Asessment of the Applicability of Cold Air and Oil Mist in Surface Grinding, Journal of Materials Processing Technology, Vol. 140 (2003), pp.224-230.

DOI: 10.1016/s0924-0136(03)00714-3

[17] S. Shaji and V. Radhakrishnan: Application of Solid Lubricants in Grinding: An Investigation on Lubricant Sandwiched Grinding Wheels, Proceedings of the 21st AIMTDR Conference (2004), pp.91-96.

DOI: 10.1081/mst-120018959

[18] F.M. White: Viscous Fluid Flow (McGraw-Hill, Inc. Second Edition).

[19] D.C. Montgomery: Design and Analysis of Experiments (John Wiley & Sons (Asia) Pte. Ltd., 2005).

[20] D.V. Patil: Grindability Study of Inconel 718 using Galvanically Bonded Monolayer cBN Wheel, Ph.D. Thesis, Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, India (2006).