The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista soldagem & inspeção (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242014000200009 |
Resumo: | The present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing parameters and shielding gas composition, on the quantity and morphology of the ultrafine particles. It was found that the amount of emitted ultrafine particles (measured by particle number and alveolar deposited surface area) are clearly dependent from the main welding parameters, namely the current intensity and the heat input of the welding process. The emission of airborne ultrafine particles increases with the current intensity as fume formation rate does. When comparing the shielding gas mixtures, higher emissions were observed for more oxidizing mixtures, that is, with higher CO2content, which means that these mixtures originate higher concentrations of ultrafine particles (as measured by number of particles by cubic centimeter of air) and higher values of alveolar deposited surface area of particles, thus resulting in a more hazardous condition regarding welders exposure. |
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The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel weldinggas metal arc weldingwelding fumesultrafine particlesalveolar deposited surface areaThe present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing parameters and shielding gas composition, on the quantity and morphology of the ultrafine particles. It was found that the amount of emitted ultrafine particles (measured by particle number and alveolar deposited surface area) are clearly dependent from the main welding parameters, namely the current intensity and the heat input of the welding process. The emission of airborne ultrafine particles increases with the current intensity as fume formation rate does. When comparing the shielding gas mixtures, higher emissions were observed for more oxidizing mixtures, that is, with higher CO2content, which means that these mixtures originate higher concentrations of ultrafine particles (as measured by number of particles by cubic centimeter of air) and higher values of alveolar deposited surface area of particles, thus resulting in a more hazardous condition regarding welders exposure.Associação Brasileira de Soldagem2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242014000200009Soldagem & Inspeção v.19 n.2 2014reponame:Revista soldagem & inspeção (Online)instname:Associação Brasileira de Soldagem (ABS)instacron:ABS10.1590/0104-9224/SI1902.09info:eu-repo/semantics/openAccessGomes,J. F.Miranda,R. M.Carvalho,P.A.Quintino,M. L.eng2014-08-21T00:00:00Zoai:scielo:S0104-92242014000200009Revistahttp://abs-soldagem.org.br/s&i/https://old.scielo.br/oai/scielo-oai.php||revista-si@abs-soldagem.org.br0104-92241980-6973opendoar:2014-08-21T00:00Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)false |
dc.title.none.fl_str_mv |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
title |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
spellingShingle |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding Gomes,J. F. gas metal arc welding welding fumes ultrafine particles alveolar deposited surface area |
title_short |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
title_full |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
title_fullStr |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
title_full_unstemmed |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
title_sort |
The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding |
author |
Gomes,J. F. |
author_facet |
Gomes,J. F. Miranda,R. M. Carvalho,P.A. Quintino,M. L. |
author_role |
author |
author2 |
Miranda,R. M. Carvalho,P.A. Quintino,M. L. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Gomes,J. F. Miranda,R. M. Carvalho,P.A. Quintino,M. L. |
dc.subject.por.fl_str_mv |
gas metal arc welding welding fumes ultrafine particles alveolar deposited surface area |
topic |
gas metal arc welding welding fumes ultrafine particles alveolar deposited surface area |
description |
The present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing parameters and shielding gas composition, on the quantity and morphology of the ultrafine particles. It was found that the amount of emitted ultrafine particles (measured by particle number and alveolar deposited surface area) are clearly dependent from the main welding parameters, namely the current intensity and the heat input of the welding process. The emission of airborne ultrafine particles increases with the current intensity as fume formation rate does. When comparing the shielding gas mixtures, higher emissions were observed for more oxidizing mixtures, that is, with higher CO2content, which means that these mixtures originate higher concentrations of ultrafine particles (as measured by number of particles by cubic centimeter of air) and higher values of alveolar deposited surface area of particles, thus resulting in a more hazardous condition regarding welders exposure. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242014000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242014000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0104-9224/SI1902.09 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Soldagem |
publisher.none.fl_str_mv |
Associação Brasileira de Soldagem |
dc.source.none.fl_str_mv |
Soldagem & Inspeção v.19 n.2 2014 reponame:Revista soldagem & inspeção (Online) instname:Associação Brasileira de Soldagem (ABS) instacron:ABS |
instname_str |
Associação Brasileira de Soldagem (ABS) |
instacron_str |
ABS |
institution |
ABS |
reponame_str |
Revista soldagem & inspeção (Online) |
collection |
Revista soldagem & inspeção (Online) |
repository.name.fl_str_mv |
Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS) |
repository.mail.fl_str_mv |
||revista-si@abs-soldagem.org.br |
_version_ |
1754213003439374336 |