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  • GMAW Al - Pulse or Spray?

    From Richard Smith@21:1/5 to All on Wed Jul 21 06:59:02 2021
    Hi

    Welding overhead "into the top corner" PD/4F...

    I was getting burned, and it was ejecvting a blob of metal to every
    pulse.

    So switched to "straight CV GMAW" and - lo-and-behold - no problem -
    easy.

    Smooth runs. Bit of crackle cleaning oxide had a fine misting not
    worth calling spatter. Ran in well. Good everything.
    Knew exactly where stood - wire-feed-speed and volts
    Found conditions matched exactly the Lincoln Foundation / Lincoln
    Electric recommendations.

    A friend said it sounds like they are making everything more difficult
    that it needs to be.

    FWIW - 1.2mm (47thou) 5356 wire

    Would you follow the Lincoln Foundation recommendation of 1.6mm /
    1/16" wire for 6mm (1/4") and upwards plate?

    Regards,
    Rich S

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  • From Bob La Londe@21:1/5 to Richard Smith on Fri Jul 23 14:14:53 2021
    On 7/20/2021 10:59 PM, Richard Smith wrote:
    Hi

    Welding overhead "into the top corner" PD/4F...

    I was getting burned, and it was ejecvting a blob of metal to every
    pulse.

    So switched to "straight CV GMAW" and - lo-and-behold - no problem -
    easy.

    Smooth runs. Bit of crackle cleaning oxide had a fine misting not
    worth calling spatter. Ran in well. Good everything.
    Knew exactly where stood - wire-feed-speed and volts
    Found conditions matched exactly the Lincoln Foundation / Lincoln
    Electric recommendations.

    A friend said it sounds like they are making everything more difficult
    that it needs to be.

    FWIW - 1.2mm (47thou) 5356 wire

    Would you follow the Lincoln Foundation recommendation of 1.6mm /
    1/16" wire for 6mm (1/4") and upwards plate?

    Regards,
    Rich S



    I think pulse is mostly just used to control heat input.

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