Field cards for common bead problems
Recall first checks for four common bead problems without jumping to a random fix.
Porosity It is just a few pinholes; grind and keep going. Visible porosity appears on a repeated bead. Your line I am stopping the repeat and checking shielding, wind, nozzle, gas path, moisture, and base-metal cleanliness before the next bead. Grinding evidence away before checking the process condition. Porosity often points upstream; stopping protects the batch. Undercut Undercut at the toe: reflex or move? Undercut is a geometry and heat-control clue, not a universal call for more heat. Lack of fusion First checks when the bead sits on the sidewall? Joint access, clean surface, work angle, travel speed, heat setting,…
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