Evaluation of the amount of nanoparticles emitted in welding fume from stainless steel using different shielding gases

12/05/2017

The primary objective of this study was to correlate the emission of macro and nanoparticles released during the process of metal inert gas/metal active gas (MIG/MAG) of stainless steel with different gas mixtures. Using different gas mixtures with different heat inputs, it was possible to determine fume formation rates and surface areas of nanoparticles with alveolar lung deposition capacity. It was found, how the various transfer modes and the type of gas protection, in particular, the percentage of active elements in the chemical composition of the gas, affect the amount of fumes generated and also the generation of nanoparticles with a high capacity of deposition. The spray transfer mode always shows higher values of nanoparticles surface area, unlike the fume formation rates. Among the tested mixtures 82%Ar+18%CO2 generates higher emissions of nanoparticles as well as fume formation rates.

Autores da comunidade :

• 

  J

  João Fernando Pereira Gomes

  ist123818

  Afiliações e fontes

  IST > CERENA

  Centro de Recursos Naturais e Ambiente

  De: orcid

  ID: 38422654

  De: scopus

  ID: 2-s2.0-85028575244

  De: cienciavitae

  ID: 62370

AO - Versão original do autor

INHALATION TOXICOLOGY

282

289

29

6

0895-8378

10.1080/08958378.2017.1358778

chemical-engineering - Engenharia Química

eng - Inglês

http://hdl.handle.net/10400.21/7470