Abstract
the use of computational fluid dynamic (CFD) models and experimental trials. It
was shown that an increased shielding gas exit velocity increased the gas
column’s stability and therefore its resistance to side draughts. Double helix
geometry within the nozzle reduced the gas column’s stability by generating a
fast moving wall of gas around a slow moving centre. A pierced internal plate
initially increased the gas velocity, however, the nozzle was unable to maintain
the velocity and the change produced gas columns of similar stability to a
standard nozzle. A pierced end plate produced the best results, increasing the
shielding gases exit velocity sufficiently to marginally outperform the standard
16 mm welding nozzle.
| Original language | English |
|---|---|
| Article number | 051016 |
| Number of pages | 8 |
| Journal | Journal of Manufacturing Science and Engineering |
| Volume | 135 |
| Issue number | 5 |
| Early online date | 2 Sep 2013 |
| DOIs | |
| Publication status | Published - 16 Sep 2013 |
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Keywords
- CFD
- GMAW
- shielding gas coverage
- nozzle geometry
- side draughts
Cite this
}
A computational fluid dynamic analysis of the effect of weld nozzle geometry changes on shielding gas coverage during gas metal arc welding. / Campbell, Stuart; Galloway, Alexander; Ramsey, Gemma; McPherson, Norman.
In: Journal of Manufacturing Science and Engineering, Vol. 135, No. 5, 051016, 16.09.2013.Research output: Contribution to journal › Article
TY - JOUR
T1 - A computational fluid dynamic analysis of the effect of weld nozzle geometry changes on shielding gas coverage during gas metal arc welding
AU - Campbell, Stuart
AU - Galloway, Alexander
AU - Ramsey, Gemma
AU - McPherson, Norman
PY - 2013/9/16
Y1 - 2013/9/16
N2 - Three geometry changes to the inner bore of a welding nozzle and their effects on weld quality during gas metal arc welding (GMAW) were investigated throughthe use of computational fluid dynamic (CFD) models and experimental trials. Itwas shown that an increased shielding gas exit velocity increased the gascolumn’s stability and therefore its resistance to side draughts. Double helixgeometry within the nozzle reduced the gas column’s stability by generating afast moving wall of gas around a slow moving centre. A pierced internal plateinitially increased the gas velocity, however, the nozzle was unable to maintainthe velocity and the change produced gas columns of similar stability to astandard nozzle. A pierced end plate produced the best results, increasing theshielding gases exit velocity sufficiently to marginally outperform the standard16 mm welding nozzle.
AB - Three geometry changes to the inner bore of a welding nozzle and their effects on weld quality during gas metal arc welding (GMAW) were investigated throughthe use of computational fluid dynamic (CFD) models and experimental trials. Itwas shown that an increased shielding gas exit velocity increased the gascolumn’s stability and therefore its resistance to side draughts. Double helixgeometry within the nozzle reduced the gas column’s stability by generating afast moving wall of gas around a slow moving centre. A pierced internal plateinitially increased the gas velocity, however, the nozzle was unable to maintainthe velocity and the change produced gas columns of similar stability to astandard nozzle. A pierced end plate produced the best results, increasing theshielding gases exit velocity sufficiently to marginally outperform the standard16 mm welding nozzle.
KW - CFD
KW - GMAW
KW - shielding gas coverage
KW - nozzle geometry
KW - side draughts
UR - http://manufacturingscience.asmedigitalcollection.asme.org/article.aspx?articleid=1738661
U2 - 10.1115/1.4024817
DO - 10.1115/1.4024817
M3 - Article
VL - 135
JO - Journal of Manufacturing Science and Engineering
JF - Journal of Manufacturing Science and Engineering
SN - 1087-1357
IS - 5
M1 - 051016
ER -