Extensive experimental trials were conducted, emulating the conditions modelled, in order to validate the computational fluid dynamic results. Final results demonstrated that a more constricted nozzle was more effective at creating a stable gas column when subjected to side draughts. Higher shielding gas flow rates further reduce the gas column's vulnerability to side draughts and thus create a more stable coverage. The results have highlighted potential economic benefits for draught free environments, in which, the shielding gas flow rate can effectively be reduced.
- welding nozzle diameter
- shielding gas coverage
- side draughts
Ramsey, G., Galloway, A., McPherson, N., Campbell, S., & Scanlon, T. (2012). A computational fluid dynamic analysis of the effect of side draughts and nozzle diameter on shielding gas coverage during gas metal arc welding. Journal of Materials Processing Technology, 212(8), 1694-1699. https://doi.org/10.1016/j.jmatprotec.2012.03.017