Abstract:
An experimental characterization of a low-current (30-40 A) cutting torch is presented. To avoid contamination of the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc was anchored onto the cylinder lateral surface. The cathode-anode and cathode-nozzle voltage drops, together with the gas pressure in the plenum chamber were registered for different values of the mass flow rate injected into the plenum chamber. By employing an optical system with a large magnification (≈ 15 X), the arc radius at the nozzle exit was also determined with a digital optical camera. The obtained experimental quantities were used to evaluate several flow properties at the nozzle exit (hot arc plasma and cold gas temperatures, arc and gas velocities, etc.) by employing a simplified theoretical model for the plasma flow in the nozzle. The obtained results are in reasonable agreement with the data reported in the literature by other authors. Explanations of the origin of the clogging effect and the nozzle voltage are also presented.
Registro:
Documento: |
Artículo
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Título: | Experimental characterization of a low-current cutting torch |
Autor: | Kelly, H.; Mancinelli, B.; Prevosto, L.; Minotti, F.O.; Márquez, A. |
Filiación: | Inst. de Física del Plasma, Departamento de Física, Universitaria Pab. I, (1428) Buenos Aires, Argentina Univ. Tecnológica National, Regional Venado Tuerto, Castelli 501, Venado Tuerto, Pcia, Santa Fe, Argentina
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Año: | 2004
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Volumen: | 34
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Número: | 4 B
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Página de inicio: | 1518
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Página de fin: | 1522
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DOI: |
http://dx.doi.org/10.1590/S0103-97332004000800003 |
Título revista: | Brazilian Journal of Physics
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Título revista abreviado: | Braz. J. Phys.
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ISSN: | 01039733
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v34_n4B_p1518_Kelly |
Referencias:
- Fernicola, R.C., (1998) Weld. J., 77, p. 52
- Ramakrishnan, S., Gershenzon, M., Polivka, F., Kearny, T.N., Rogozinsky, M.W., (1997) IEEE Trans. Plasma Sci., 25, p. 937
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- Pardo, C., González-Aguilar, J., Rodríguez-Yunta, A., Calderón, M.A.G., (1999) J. Phys. D: Appl. Phys., 32, p. 2181
- Freton, P., Gonzalez, J.J., Gleizes, A., Camy Peyret, F., Caillibotte, G., Delzenne, M., (2002) J. Phys. D: Appl. Phys., 35, p. 115
- Kelly, H., Minotti, F.O., Prevosto, L., Mancinelli, B., Hydrodynamic model for the plasma gas flow in a cutting torch nozzle (2003) Brazilian Journal of Physics, , submitted to
- http://www.quickfield.com; Raizer, Y.P., (1991) Gas Discharge Physics, , Springer-Verlag, Berlin
Citas:
---------- APA ----------
Kelly, H., Mancinelli, B., Prevosto, L., Minotti, F.O. & Márquez, A.
(2004)
. Experimental characterization of a low-current cutting torch. Brazilian Journal of Physics, 34(4 B), 1518-1522.
http://dx.doi.org/10.1590/S0103-97332004000800003---------- CHICAGO ----------
Kelly, H., Mancinelli, B., Prevosto, L., Minotti, F.O., Márquez, A.
"Experimental characterization of a low-current cutting torch"
. Brazilian Journal of Physics 34, no. 4 B
(2004) : 1518-1522.
http://dx.doi.org/10.1590/S0103-97332004000800003---------- MLA ----------
Kelly, H., Mancinelli, B., Prevosto, L., Minotti, F.O., Márquez, A.
"Experimental characterization of a low-current cutting torch"
. Brazilian Journal of Physics, vol. 34, no. 4 B, 2004, pp. 1518-1522.
http://dx.doi.org/10.1590/S0103-97332004000800003---------- VANCOUVER ----------
Kelly, H., Mancinelli, B., Prevosto, L., Minotti, F.O., Márquez, A. Experimental characterization of a low-current cutting torch. Braz. J. Phys. 2004;34(4 B):1518-1522.
http://dx.doi.org/10.1590/S0103-97332004000800003