The Analysis on the Starting Friction Torque Increase of Magnetic Fluid Revolving Sealing

Abstract:

Abstract. Magnetic fluid revolving sealing is widely used in modern industry. In the process of application, it is founded that the starting friction torque is very large, particularly at lower temperature. This problem has become a key factor restricting the application of magnetic fluid rotation sealing. In this paper, the mechanism of starting torque increase is analyzed, based on the change of microstructure and its viscosity. After analysis , such conclusion is obtained , which can be described: to a certain sealing structure, the type of magnetic fluid, size distribution of magnetic particles as well as the working condition concluding temperature, magnetic field gradient and the revolving velocity of shaft is the main influence factor of starting friction torque . It is very useful to reduce the starting friction torque.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 429-432
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.429
• Online since: January 2013
• Authors: Yu Qiang Cai, Na Xing
• Keywords: Influence Factor, Microstructure, Revolving Sealing, Starting Friction Torque

References

[1] Steffen Thurm and Stefan Odenbach, J, Phys. Fluids, Vol. 15, No. 6, June 2003, 1658-1664.

[2] A. Yu. Zubarev et al, J. Physica A 358 (2005) 475–491.

[3] Loredana Mirela Pop and Stefan Odenbach, J. Phys. Condens. Matter 18 (2006) S2785–S2802.

[4] S. Odenbach, Magnetoviscous Efect in Ferrofluids, Springer, Berlin, (2002).

[5] A. Yu. Zubarev, S. Odenbach, J. Fleisher, J. Magn. Magn. Mater. 252 (2002) 241.

[6] A. Yu. Zubarev, L. Yu. Iskakova, Phys. Rev. E 63 (2001) 061507.

[7] M.E. Van Leeuwen, B. Smit, Phys. Rev. Lett. 71 (1993) 3991.

[8] P.G. de Gennes, P.A. Pincus, J. Phys.: Condens. Matter 11 (1970) 189.

[9] P.C. Jordan, Mol. Phys. 25 (1973) 961.

[10] A. Cebers, Magn. Gidrodin 2 (1974) 36.

[11] A. Yu. Zubarev, L. Yu. Iskakova, Phys. Rev. E 65 (2002) 061406.

[12] M.A. Osipov, P.I.C. Teixeira, M.M. Telo da Gama, Phys. Rev. E 54 (1996) 2597.

[13] K.I. Morozov, M.I. Shliomis, in: Ferrofluids, Magnetically Controllable Fluids and their Applications, Pergamon Press, Oxford, (2002).

[14] A. Yu. Zubarev∗, L. Yu. Iskakova, J, Physica A 335 (2004) 314 – 324.