Impact of the Parameters of Laser-Vibration Treatment on the Roughness of Aluminium Melts

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This paper presents the preliminary, experimental results of laser-vibration treatment to increase the roughness of aluminium melts in compliance with EN AW-6060 (AlMgSi0.5). Using this method, metal objects are melted with a mobile laser beam while being vibrated. The effects of laser beam scanning velocity on the shapes of aluminium melts were studied at the set laser power and vibration frequency. The studied parameter was the mean roughness Ra. The value of Ra parameter grew significantly. The studies were undertaken to employ this technology for the purpose of intensifying the exchange of heat in aluminium heating panels.

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71-75

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January 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] R. L. Webb, Kim Nae-Hyun, Principles of Enhanced Heat Transfer, second ed., Taylor & Francis, New York, (2005).

Google Scholar

[2] B. J. Jones, J.P. McHale, S. Garimella, The Influence of Surface Roughness on Nucleate Pool Boiling Heat Transfer, ASME J. of Heat Transfer. 131 (2009) 121009-1 – 121009-14.

DOI: 10.1115/1.3220144

Google Scholar

[3] R. I. Vachon, G.E. Tanger, D.L. Davis, G.H. Nix, Pool boiling on polished and chemically etched stainless steel surfaces, ASME J. of Heat Transfer. 90 (1968) 231-238.

DOI: 10.1115/1.3597486

Google Scholar

[4] T.M. Wójcik, Experimental Investigations of Boiling Heat Transfer Hysteresis on Sintered, Metal – Fibrous, Porous Structures, Exp. Therm. Fluid Sci. 33 (2009) 397-404.

DOI: 10.1016/j.expthermflusci.2008.10.011

Google Scholar

[5] J. P. McHale, S.V. Garimella, Nucleate Boiling from smooth and rough surfaces – Part 1: Fabrication and characterization of an optically transparent heater-sensor substrate with controlled surface roughness, Exp. Therm. Fluid Sci. 44 (2013).

DOI: 10.1016/j.expthermflusci.2012.08.006

Google Scholar

[6] M. Faucheux, G. Muller, M. Havet, A. Lebail, Influence of surface roughness on the supercooling degree: Case of selected water/ethanol solutions frozen on aluminium surfaces, Int. J. Refrigeration. 29 (2006) 1218-1224.

DOI: 10.1016/j.ijrefrig.2006.01.002

Google Scholar

[7] J. M. Saiz Jabardo, G. Ribatski, E. Stelute, Roughness and surface material effects on nucleate boiling heat transfer from cylindrical surfaces to refrigerants R-134a and R-123, Exp. Therm. Fluid Sci. 33 (2009) 579-590.

DOI: 10.1016/j.expthermflusci.2008.12.004

Google Scholar

[8] U.P. Hwang, K.P. Moran, Boiling heat transfer of Silicon integrated circuits chip mounted on a substrate, ASME J. of Heat Transfer. 20 (1981) 231-238.

Google Scholar

[9] T. Orzechowski, Boiling heat transfer on fins with structural microcoverings, Kielce University of Technology, Kielce, Poland, 2003 (In polish).

Google Scholar

[10] N. Radek, Ł.J. Orman, Preliminary data of boiling heat transfer of laser treated heatexchanger surfaces, in: J.I. Shalapko, L.A. Dobrzański (Eds. ), Scientific basis of modern technologies: experience and prospects, Khmelnytskyi National University, Jaremche, Ukraine, 2011, pp.236-245.

Google Scholar

[11] B. Grabas, Polish Patent 207358 (2010).

Google Scholar

[12] B. Grabas, Polish Patent 210889 (2011).

Google Scholar