Experimental characterization of a low-current cutting torch
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876464423149764608 |
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| author | B. Mancinelli |
| author_facet | B. Mancinelli |
| contents | Experimental characterization of a low-current cutting torch B. Mancinelli L. Prevosto F.O. Minotti H. Kelly A. Márquez Física, Astronomía y Matemáticas An experimental characterization of a low-current (30-40 A) cutting torch is presented. To avoid contaminationof the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc wasanchored onto the cylinder lateral surface. The cathode-anode and cathode-nozzle voltage drops, together withthe gas pressure in the plenum chamber were registered for different values of the mass flow rate injected intothe 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 wereused 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 obtainedresults 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. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434803 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.34 |
| format | Artículo científico |
| id | redalyc_46434803 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Experimental characterization of a low-current cutting torch B. Mancinelli Física, Astronomía y Matemáticas Experimental characterization of a low-current cutting torch B. Mancinelli L. Prevosto F.O. Minotti H. Kelly A. Márquez Física, Astronomía y Matemáticas An experimental characterization of a low-current (30-40 A) cutting torch is presented. To avoid contaminationof the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc wasanchored onto the cylinder lateral surface. The cathode-anode and cathode-nozzle voltage drops, together withthe gas pressure in the plenum chamber were registered for different values of the mass flow rate injected intothe 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 wereused 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 obtainedresults 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. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434803 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.34 |
| title | Experimental characterization of a low-current cutting torch |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434803 |