Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.

Autores
Chamorro, Juan Camilo; Prevosto, Leandro; Cejas, Ezequiel; Milardovich, Natalio; Mancinelli, Beatriz; Fischfeld, Gerardo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
An experimental investigation of heat propagation in the case of plasma cutting of concrete is reported. The experiments were carried out by using a high-enthalpy nitrogen plasma jet generated in a dc vortex-stabilized nontransferred arc torch. Concrete plates of different thicknesses up to 52 mm and with and without steel reinforcement were used. The plates were placed horizontally while cutting. The heat conduction losses inside the material were estimated by comparing thermocouple measurements and theoretical temperatures obtained with an analytical model of the heat propagation in the material. The influence of the molten concrete layer that separates the plasma to the solid material due to the high viscosity of the liquid concrete was accounted for. The power losses below the material in the extinguishing plasma have also been determined from calorimet ric measurements. For different plate thicknesses and cutting velocities, a complete power balance of the process is performed with the calculation of the cutting efficiency on the basis of various relevant power terms. In addition, the hydrodynamics of the molten concrete layer in the kerf is analyzed. For a mean power level of 11.2 kW and a nitrogen gas flow rate of 25 Nl/min, the torch is able to cut a concrete plate of 52 mm in thickness with a speed of 20 mm/min and a whole efficiency of about 30%. The viscosity force is the main limiting factor on the cutting velocity in thick plates.
Fil: Chamorro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe, Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Cejas, Ezequiel. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Milardovich, Natalio. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Fischfeld, Gerardo. Universidad Nacional Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Santa Fe, Argentina.
Peer Reviewed
Fuente
IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 47, NO. 6, JUNE 2019.
Materia
Concrete.
Nontransferred arc torch.
Plasma cutting.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-03-20T21:48:18Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/9981
Acceder
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network_acronym_str RIAUTN
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network_name_str Repositorio Institucional Abierto (UTN)
spelling Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.Chamorro, Juan CamiloPrevosto, LeandroCejas, EzequielMilardovich, NatalioMancinelli, BeatrizFischfeld, GerardoConcrete.Nontransferred arc torch.Plasma cutting.An experimental investigation of heat propagation in the case of plasma cutting of concrete is reported. The experiments were carried out by using a high-enthalpy nitrogen plasma jet generated in a dc vortex-stabilized nontransferred arc torch. Concrete plates of different thicknesses up to 52 mm and with and without steel reinforcement were used. The plates were placed horizontally while cutting. The heat conduction losses inside the material were estimated by comparing thermocouple measurements and theoretical temperatures obtained with an analytical model of the heat propagation in the material. The influence of the molten concrete layer that separates the plasma to the solid material due to the high viscosity of the liquid concrete was accounted for. The power losses below the material in the extinguishing plasma have also been determined from calorimet ric measurements. For different plate thicknesses and cutting velocities, a complete power balance of the process is performed with the calculation of the cutting efficiency on the basis of various relevant power terms. In addition, the hydrodynamics of the molten concrete layer in the kerf is analyzed. For a mean power level of 11.2 kW and a nitrogen gas flow rate of 25 Nl/min, the torch is able to cut a concrete plate of 52 mm in thickness with a speed of 20 mm/min and a whole efficiency of about 30%. The viscosity force is the main limiting factor on the cutting velocity in thick plates.Fil: Chamorro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe, Argentina.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.Fil: Cejas, Ezequiel. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Milardovich, Natalio. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Fischfeld, Gerardo. Universidad Nacional Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Santa Fe, Argentina.Peer Reviewed2024-03-20T21:48:18Z2024-03-20T21:48:18Z2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfIEEE TRANSACTIONS ON PLASMA SCIENCE.http://hdl.handle.net/20.500.12272/998110.1109/TPS.2019.2914394.IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 47, NO. 6, JUNE 2019.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionaleng10.1109/TPS.2018.2869031info:eu-repo/semantics/openAccess2024-03-20T21:48:18Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalChamorro, Juan Camilo.Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio2026-09-24T12:44:15Zoai:ria.utn.edu.ar:20.500.12272/9981instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:44:16.989Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
title Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
spellingShingle Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
Chamorro, Juan Camilo
Concrete.
Nontransferred arc torch.
Plasma cutting.
title_short Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
title_full Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
title_fullStr Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
title_full_unstemmed Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
title_sort Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
dc.creator.none.fl_str_mv Chamorro, Juan Camilo
Prevosto, Leandro
Cejas, Ezequiel
Milardovich, Natalio
Mancinelli, Beatriz
Fischfeld, Gerardo
author Chamorro, Juan Camilo
author_facet Chamorro, Juan Camilo
Prevosto, Leandro
Cejas, Ezequiel
Milardovich, Natalio
Mancinelli, Beatriz
Fischfeld, Gerardo
author_role author
author2 Prevosto, Leandro
Cejas, Ezequiel
Milardovich, Natalio
Mancinelli, Beatriz
Fischfeld, Gerardo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Concrete.
Nontransferred arc torch.
Plasma cutting.
topic Concrete.
Nontransferred arc torch.
Plasma cutting.
dc.description.none.fl_txt_mv An experimental investigation of heat propagation in the case of plasma cutting of concrete is reported. The experiments were carried out by using a high-enthalpy nitrogen plasma jet generated in a dc vortex-stabilized nontransferred arc torch. Concrete plates of different thicknesses up to 52 mm and with and without steel reinforcement were used. The plates were placed horizontally while cutting. The heat conduction losses inside the material were estimated by comparing thermocouple measurements and theoretical temperatures obtained with an analytical model of the heat propagation in the material. The influence of the molten concrete layer that separates the plasma to the solid material due to the high viscosity of the liquid concrete was accounted for. The power losses below the material in the extinguishing plasma have also been determined from calorimet ric measurements. For different plate thicknesses and cutting velocities, a complete power balance of the process is performed with the calculation of the cutting efficiency on the basis of various relevant power terms. In addition, the hydrodynamics of the molten concrete layer in the kerf is analyzed. For a mean power level of 11.2 kW and a nitrogen gas flow rate of 25 Nl/min, the torch is able to cut a concrete plate of 52 mm in thickness with a speed of 20 mm/min and a whole efficiency of about 30%. The viscosity force is the main limiting factor on the cutting velocity in thick plates.
Fil: Chamorro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe, Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Cejas, Ezequiel. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Milardovich, Natalio. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Fischfeld, Gerardo. Universidad Nacional Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Santa Fe, Argentina.
Peer Reviewed
description An experimental investigation of heat propagation in the case of plasma cutting of concrete is reported. The experiments were carried out by using a high-enthalpy nitrogen plasma jet generated in a dc vortex-stabilized nontransferred arc torch. Concrete plates of different thicknesses up to 52 mm and with and without steel reinforcement were used. The plates were placed horizontally while cutting. The heat conduction losses inside the material were estimated by comparing thermocouple measurements and theoretical temperatures obtained with an analytical model of the heat propagation in the material. The influence of the molten concrete layer that separates the plasma to the solid material due to the high viscosity of the liquid concrete was accounted for. The power losses below the material in the extinguishing plasma have also been determined from calorimet ric measurements. For different plate thicknesses and cutting velocities, a complete power balance of the process is performed with the calculation of the cutting efficiency on the basis of various relevant power terms. In addition, the hydrodynamics of the molten concrete layer in the kerf is analyzed. For a mean power level of 11.2 kW and a nitrogen gas flow rate of 25 Nl/min, the torch is able to cut a concrete plate of 52 mm in thickness with a speed of 20 mm/min and a whole efficiency of about 30%. The viscosity force is the main limiting factor on the cutting velocity in thick plates.
publishDate 2019
dc.date.none.fl_str_mv 2019
2024-03-20T21:48:18Z
2024-03-20T21:48:18Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv IEEE TRANSACTIONS ON PLASMA SCIENCE.
http://hdl.handle.net/20.500.12272/9981
10.1109/TPS.2019.2914394.
identifier_str_mv IEEE TRANSACTIONS ON PLASMA SCIENCE.
10.1109/TPS.2019.2914394.
url http://hdl.handle.net/20.500.12272/9981
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1109/TPS.2018.2869031
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-03-20T21:48:18Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Chamorro, Juan Camilo.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-03-20T21:48:18Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Chamorro, Juan Camilo.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 47, NO. 6, JUNE 2019.
reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.265058

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