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  1. #1
    Join Date
    Jan 2021
    Location
    italy
    Age
    35
    Posts
    4

    Default Looking for SAW wire S2Mo an Ti support

    Quote Originally Posted by Grahame Collins View Post
    Flux can get damp through humidity /wet weather and also can give rise to porosity. Also re using flux that has not been cleaned will do it as well.

    If you can locate a copy of the Lincoln Welding Procedure Handbook from Lincoln Electric,the book is pure gold in references to assist in settting sub arc and curing problems.
    They are available only through Lincoln Electric as far as I know.

    Grahame
    Thank you indeed Grahame, What do you think about, can copper particles remaining in the bevel cause weld crack?

  2. #2
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Quote Originally Posted by sembul View Post
    Thank you indeed Grahame, What do you think about, can copper particles remaining in the bevel cause weld crack?
    Hi sembul
    It could depend on other factors too, not just the presence of the copper. It seems doubtful. Otherwise the SUB arc wire would not be coated in copper but in something else.

    Perhaps the question might be what amount of copper would have an effect?
    How did the copper get there?
    Is the copper contaminated with grease or oil? All weld preparations need to be as clean as they can possibly be.

    Please start from the beginning and supply all of the details as noted in the other answer.

    As with any welding the outcome depends on what the input parameters were.

    What material are you wanting to weld? .
    What grade of steel is it? Is it a cylindrical circumferential weld or a flat plate?
    What brand machine are welding it with? What is the amp range? What type of flux are you using.?

    It is winter on your side of the world. What is the air temperature in your welding work area?
    Are you preheating the work and keeping it evenly heated between work breaks- lunch and coffee breaks ?

    Where is the cracking- in the weld bead or in the heat affected zone -the unwelded areas adjacent to where the weld butts up to?

    Grahame
    Last edited by Grahame Collins; 26th Jan 2021 at 10:45 PM. Reason: fixin ma speling

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