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GMAW shielding gas flow optimisation by refinement of nozzle geometry

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Figure

Figure 1: CFD nozzle geometry showing simplified arc plasma
Figure 2: Weld nozzle geometries showing (a) conventional 16 mm nozzle, restricted 14 mm nozzle and restricted 11 mm nozzle, and (b) end plate restriction and internal plate restriction
Figure 4: Selection of 16 mm nozzle CFD predictions at 10 l/min and (a) 1 mph, (b) 3 mph and (c) 5 mph cross drafts
Table 2: Radiographic classification of weld quality

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