Welding in the World

, Volume 54, Issue 1–2, pp 3–15 | Cite as

Capture Efficiency of Integral Fume Extraction Torches for GMA Welding — Part 1

  • Mario MarconiEmail author
  • Albano BravacciniEmail author
Technical Paper


The Econweld Project identified the development of a lightweight and ergonomic fume extraction GMAW torch as a high priority research need. This report has been completed in response to this need. At source, capture is the most efficient method for eliminating welding fumes from the metalworking environment, particularly from the breathing zone of the welder. Worker productivity can increase by up to 20% when an integral suction torch is installed in a welding fabrication shop, resulting in less sick leave taken by welders and improved employee morale. Moreover, significant energy savings can be achieved when source capture is used compared to general ventilation methods. The state-of-the-art of existing fume extraction torches and requirements for improving torch performance have been analysed, considering the weight, flexibility and fume extraction capability, with particular emphasis on the integral extraction torch adopted by the EC-funded Econweld Project. Through a historical survey of the evolution of integral suction torches, the recent methods for evaluating their capture efficiency have been analysed, the early developments of fume extraction torches have been reviewed and the more effective improvements in commercial torches have been investigated, both for their increasing efficiency and enhanced ergonomic assessment. The modern Computational Fluid Dynamics (CFD) approach has been briefly described, in order to model the fume plume dispersal and capture efficiency, with results validated by prestigious scientific institutions.

IIW-Thesaurus keywords

Arc welding Fume Gas shielded arc welding GMA welding Health and safety Occupational health Reference lists Toxic materials Ventilating Ventilation equipment 


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  1. [1]
    EC funded Collective Research Project, Contract N. CT-2005–516336, Economically welding in a healthy way (Econweld) — Project website:
  2. [2]
    Escala S., Nooij M., Quintino L.: Economically welding in a healthy way, EWF Document, 1st South East European Welding Congress, Timisoara, Romania, May 2006, pp. 244–251. Download at:
  3. [3]
    Aspirmig Srl, Turin, Italy — Download at:
  4. [4]
    Caruggi M., Nilberto A.: Welding investigation and optimisation by means of Computational Fluid Dynamics, IIW Doc. VIII-2041–07, 2007.Google Scholar
  5. [5]
    Colombo F.: Ergonomics in welding: experimental results in industrial cases, IIW Doc. VIII-2040–07, 2007.Google Scholar
  6. [6]
    Srinivas S.D., Mukund K., Arun M.: Computational modelling and simulation of Buoyant Plume Dynamics, 2nd International Congress on Computational Mechanics and Simulation (ICCMS), 2006, Coimbatore, India.Google Scholar
  7. [7]
    Fiore S.R.: Reducing exposure to Hexavalent Chromium in Welding Fumes, Welding Journal, August 2006, Vol. 85, No. 8, pp. 38–42.Google Scholar
  8. [8]
    American Conference of Governmental Industrial Hygienists (ACGIH), Industrial Ventilation — A Manual of Recommended Practice, 2nd Edition, 1995, Cincinnati (USA).Google Scholar
  9. [9]
    Brandt A.: Industrial Health Engineering, John Wiley & Sons, 1947, New York (USA), pp. 71.Google Scholar
  10. [10]
    Olander L., Conroy L., Kulmala I., Garrison R. Industrial ventilation — Design guidebook, vol. 1, Chapter 10, Academic Press, 2001, San Diego (USA), pp. 809–1022.Google Scholar
  11. [11]
    EN ISO 15012–1:2004, Health and safety in welding and allied processes — Requirements testing and marking of equipment for air filtration — Part 1: Testing of the separation efficiency for welding fume.Google Scholar
  12. [12]
    EN ISO 15012–2:2008. Health and safety in welding and allied processes — Requirements, testing and marking of equipment for air filtration — Part 2: Determination of the minimum air volume flow rate of captor hoods and nozzles.Google Scholar
  13. [13]
    prEN ISO 15012–3:2006. Health and safety in welding and allied processes — Requirements, testing and marking of equipment for air filtration — Part 3: Determination of the capture efficiency of welding fume extraction devices using tracer gas.Google Scholar
  14. [14]
    Schlüter J., Welding torch, International Application, Patent no. US 4,284,873, August 1981.Google Scholar
  15. [15]
    Troyer W. E., Wildenthaler L. F., Fume extracting welding gun nozzle, International Application, Patent no. US 3,798,409, March 1974.Google Scholar
  16. [16]
    Mann R.N., Nozzle structure in welding gun, International Application, Patent no. US 5,015,822, May 1991.Google Scholar
  17. [17]
    Knoll B., Moon A.M.M., Welding torch with inverse extraction, International Application, Patent no. US 6,380,515, April 2002.Google Scholar
  18. [18]
    Cooper P., Godbole A., Norrish J, Apparatus and method for welding, International Application, Patent no. WO 2007/106925 A1, September 2007.Google Scholar
  19. [19]
    Berufsgenossenschaftliches Institut für Arbeitsschutz — BIA: Focus on BIA’s work. N.: 0150 — Welding fume extraction devices — Requirements and standardization, Sankt Augustin, Germany, 11/2003.Google Scholar
  20. [20]
    Marsteau S.: Fumées de soudage — Evaluation des équipements de traitement des gaz, Welding fumes — Assessment of gas treatment equipment, Cahier de notes documentaires de l’INRS (France), 2007, ND 2264, no. 206, pp. 29–38 (in French).Google Scholar
  21. [21]
    Cornu J.C., Muller J.P., Guélin J.C.: Torches aspirantes de soudage MIG/MAG — Méthode de mesure de l’efficacité de captage — Etude de paramètres d’influence, MIG-MAG welding torches with fume exhaust devices — Exhaust efficiency measurement method — Study of relevant parameters, Cahier de notes documentaires de l’INRS (France), 1991, no. 145, pp. 663–669 (in French).Google Scholar

Copyright information

© International Institute of Welding 2010

Authors and Affiliations

  1. 1.R&D Manager at Plasma Team SncArquata ScriviaItaly
  2. 2.Aspirmig SrlTurinItaly

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