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Tiging cast iron

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  • Tiging cast iron

    tig welding a crack in a web of cast iron pulley with silcon brass ,how do I set machine ? Lots experience tiging aluminum and steel first time for cast

  • #2
    Pulley I wouldn't touch it. It could come apart. What size pulley?...Bob
    Bob Wright


    • #3
      5" power steering


      • #4
        Is this some sort of hard to find part? <br />
        <br />
        But in general, I'd steer clear of tig welding anything cast iron. You can tig braze it. Without tempting you to try to repair this pulley though, I would suggest aluminum bronze as opposed to the silicon bronze on cast iron in a braze only. <br />
        <br />
        However, I know of a guy that did an O&A braze repair on a pulley for his lathe. He over built the part then turned it back down. Still holding as far as I know. <br />
        <br />
        But why not just replace it?


        • #5
          I used stainless for a drill press base, more flex before breaking than regular steel, not sure how the silica bronze works for flex but my drill press is still holding up.

          I set it to DC, some people prefer AC.
          if there's a welder, there's a way


          • #6
            With aluminum bronze I'd use AC.


            • #7
              Yeah, If your doing any aluminum type stuff, you should use AC, otherwise it will be tricky to beat the oxide layer.
              if there's a welder, there's a way


              • #8
                Originally posted by ryanjones2150 View Post
                With aluminum bronze I'd use AC.
                I agree..... for some applications using using Al-Bronze or Sil-Bronze....

                it is helpful to TIG on AC-HF..... to help "JIGGLE" the puddle and float impurities.....

                AC is not just reserved for Aluminum welding......

                The more you know, The better you know, How little you know

                “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

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                • #9
                  And take your time with it. Let the cleaning action work for you, then flow in your braze filler metal. <br />
                  <br />
                  Aluminum bronze has more stretch and I think it's a bit stronger, especially for the cast iron repairs.


                  • #10
                    I've tig welded cast iron several times with good results. I used certanium cast iron rod. Most recently I tig welded some cast iron bases/floor mounts for restaurant tables. They turned out well.
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