• Ali GMAW - defect rates - spray, pulse

    From Richard Smith@null@void.com to sci.engr.joining.welding on Fri Aug 26 08:53:43 2022
    From Newsgroup: sci.engr.joining.welding

    Hi
    Plea for real experience information.
    Thicker Ali at above about 130A.
    Probably wire-feed-speed at or above 10m/min (394ipm)
    Thinking of marine-grade 5000-series Al-Mg, but experience of other
    grades would apply regarding this question.
    For welds, compare / contrast:

    * spray-transfer/smooth-run
    ^
    v
    * Pulse-mode/stepped-progression

    Or any comparison of spray/Pulse modes and of smooth/stepping
    progression.

    Flaw and defect rates, please.
    This would be by radiography (x-ray) and mechanical test (strength
    alone will reveal everything important about Ali?).

    Here in UK we have an orthodoxy about which process / approach must be
    used.
    Defect rates are / can-be high.
    Which surely simply cannot be the case universally???
    Unfortunately I have not been able to test the welds I trust the most.

    Thanks in advance,
    Rich Smith
    --- Synchronet 3.21d-Linux NewsLink 1.2
  • From Richard Smith@null@void.com to sci.engr.joining.welding on Fri Aug 26 15:48:47 2022
    From Newsgroup: sci.engr.joining.welding

    10m/min - that's with 1.2mm wire...
    --- Synchronet 3.21d-Linux NewsLink 1.2