Article In: orcid, scopus, cienciavitae

Characterization of airborne particles generated from metal active gas welding process

INHALATION TOXICOLOGY

Guerreiro, C.; Gomes, J.F.; Albuquerque, P. — 2014

Key information

Authors:

Guerreiro, C.; Gomes, J.F. (João Fernando Pereira Gomes); Carvalho, P.; Santos, T.J.G.; Miranda, R.M.; Albuquerque, P. (Paula Cristina Silva Albuquerque)

Published in

01/01/2014

Abstract

This study is focused on the characterization of particles emitted in the metal active gas welding of carbon steel using mixture of Ar + CO2, and intends to analyze which are the main process parameters that influence the emission itself. It was found that the amount of emitted particles (measured by particle number and alveolar deposited surface area) are clearly dependent on the distance to the welding front and also on the main welding parameters, namely the current intensity and heat input in the welding process. The emission of airborne fine particles seems to increase with the current intensity as fume-formation rate does. When comparing the tested gas mixtures, higher emissions are observed for more oxidant mixtures, that is, mixtures with higher CO2 content, which result in higher arc stability. These mixtures originate higher concentrations of fine particles (as measured by number of particles by cm 3 of air) and higher values of alveolar deposited surface area of particles, thus resulting in a more severe worker's exposure.

Publication details

Authors in the community:

Publication version

AO - Author's Original

Title of the publication container

INHALATION TOXICOLOGY

First page or article number

345

Last page

352

Volume

26

Issue

6

ISSN

0895-8378

DOI

10.3109/08958378.2014.897400

Fields of Science and Technology (FOS)

chemical-engineering - Chemical engineering

Publication language (ISO code)

eng - English

Alternative identifier (URI)

http://hdl.handle.net/10400.21/3673

Rights type:

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