Skip to main content
SpringerLink
Log in

Visualizations of fluid flows in the TIG welding region for different shapes of the shield gas nozzle

  • Regular Paper
  • Published:
Journal of Visualization Aims and scope Submit manuscript

Abstract

The tungsten inert gas (TIG) welding enables to produce high welding qualities. However, it has some problems such as a large distortion and a shallow penetration into the welding parts. To overcome those problems, there have been many studies on A-TIG welding in which active flux and a shield gas are used. The shield gas pressure, velocity, and distribution area are dominant factors in producing better welding condition which can be evaluated by the gas penetration, the gap between the nozzle tip and welding plate and the nozzle shape of the shield gas. In this study, the influences of the shield gas distribution onto the melting efficiency and penetration shape in TIG welding were investigated using a numerical simulation. The gap distances between the nozzle tip and the welding plate were changed 3, 4, 5 mm and two nozzle shapes, convergent parallel (CP) and CDP, were tested. 100% Ar gas was used as the shield gas. CDP type nozzle showed deeper penetrations and higher melting efficiency compared to those of CD type and CP type nozzles.

Graphical Abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

References

  • Ham HS, Park IK, Moon YD, and Cho SM (2006) Development of A-TIG welding process for deep penetration and decreasing deformation, Proceedings of the KOSME 2006 Fall Conference, Busan, Korea, November 9, pp 139–140

  • Katsaounis A (1993) Heat flow an arc efficiency at high pressures in argon and helium tungsten arcs. Weld J 72(9):447s–454s

    Google Scholar 

  • Lancaster JF (1984) The physics of welding, Pergamon Press, Oxford

  • Lowke JJ, Tanaka M, Ushio M (2005) Mechanisms giving increased weld depth due to a flux. J Phys D Appl Phys 38:3438–3445

    Article  Google Scholar 

  • Menter FR (1992) Influence of free stream values on k-ω turbulence model predictions. AIAA J 30(6):1657–1659

    Article  Google Scholar 

  • Menter FR (2009) Review of the shear-stress transport turbulence model experience from an industrial perspective. Int J Comput Fluid Dyn 23(4):305–316

    Article  MATH  Google Scholar 

  • Oh DS, Kim YS, Cho SM (2005) The characteristics of arc pressure distribution by shield gas mixing ratio in TIG welding. J KWS 23(1):50–56

    Google Scholar 

  • Paulo JM, Eustaquio RA, Iaci MP (2000) TIG welding with single-component fluxes. J Mater Process Technol 99:260–265

    Article  Google Scholar 

  • Tanaka M (2004) Numerical study of gas tungsten arc plasma with anode melting. Vacuum 73:381–389

    Article  Google Scholar 

Download references

Acknowledgments

This work was supported by National Research Laboratory program of NRF (R0A-2008-000-20069-0) of Korea and the Post BK21 project of Ministry of Education, Science & Technology.

Author information

Authors and Affiliations

  1. Department of Mechanical and Automotive Engineering, Pukyong Nat’l University, Busan, 608-739, Korea

    Yoon Hwan Choi & Yeon Won Lee

  2. Department of Shipbuilding Systems Management Eng., Graduate School, Pukyong Nat’l University, Busan, 608-739, Korea

    Ji Seok Seo

  3. Division of Materials Science and Engineering, Pukyong Nat’l University, Busan, 608-739, Korea

    Sang Myung Cho

  4. Division of Mechanical and Information Eng, Korea Maritime University, Busan, 606-791, Korea

    Deog Hee Doh

Authors
  1. Yoon Hwan Choi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yeon Won Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Ji Seok Seo
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Sang Myung Cho
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Deog Hee Doh
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yeon Won Lee.

Additional information

This paper is to be considered for the special issue ‘2010 ISFV-14’.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Choi, Y.H., Lee, Y.W., Seo, J.S. et al. Visualizations of fluid flows in the TIG welding region for different shapes of the shield gas nozzle. J Vis 14, 213–224 (2011). https://doi.org/10.1007/s12650-011-0085-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12650-011-0085-y

Keywords

Search

Navigation