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welding stainless without backgassing

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  • JTMcC
    replied
    Originally posted by arcdawg
    i have welded miles of stainless steel with no back purge........mabey if you are doing some nuke stuff

    dawg

    Well your miles of ss certainly weren't pipe or you would understand.

    JTMcC.

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  • arcdawg
    replied
    Originally posted by MACH4
    . I would think a welding instructor would be well aware of this rolleyes.
    Mike
    MACH4
    i did kitchen hoods- never any stainless pipe-

    but i do like your smart assed reply !

    dawg

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  • MACH4
    replied
    Originally posted by arcdawg
    i have welded miles of stainless steel with no back purge........mabey if you are doing some nuke stuff

    dawg
    When tig welding SS foodgrade piping the interior of the weldment MUST be covered with a backing purge or as has been stated use a gel to avoid sugar which will harbor food products that WILL begin to produce bacteria that will contaminate the food product in question. I would think a welding instructor would be well aware of this rolleyes.
    Mike
    MACH4

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  • arcdawg
    replied
    i have welded miles of stainless steel with no back purge........mabey if you are doing some nuke stuff

    dawg

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  • joebass
    replied
    Solar B flux is what you want if you can't back purge. I have'nt use it because I will usuall back purge or I will try to not burn through if it is thin sheet. I have heard that it is a real pain to get off afterward. what are you welding?

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  • Terence638
    replied
    laiky
    There is a Gel availible but I think it doesnt provide enough sheilding to eliminate the back purge.
    They asked for it at work just the other day and I cannot remember the name. if you e-mail me some time early in the week ill have the name for you and tell you the capability it may or maynot have.


    [email protected]
    Terence

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  • MACH4
    replied
    Laiky,
    To the best of my knowledge,there is no gel that will work in place of a purge on SS to keep the "sugar" away.
    Mike
    MACH4

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  • Laiky
    started a topic welding stainless without backgassing

    welding stainless without backgassing

    Is there a gell you can use to protect the backside of a SS weld instead of backgassing??
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