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Advice needed for galvy mig welding

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  • Advice needed for galvy mig welding

    Hi guys, I am about to have to do some welding on some galvanized steel studs, channel, angle, etc. All of it is thin, like 14g +/-. My question is this, in the past, every time I have encountered galvanized material, I would just strip the galvanizing with a multi flap then proceed as normal. With this job, that would be very time consuming and not very realistic. I will be using my millermatic 180. What do you guys suggest I do? Can I use my er70s-6 with 75/25 and have good results? Is there a different wire and or gas combo that is more appropriate that I could run with my machine? Do you have any other suggestions?

    I am aware of the hazardous fumes produced from galvanized welding, I will be in a well ventilated area with respirator. Thanks guys.

  • #2
    I had best results with grinding, sometime you can skip the grinding by stick welding it but on 14 ga. ???

    I doubt there is another way to properly do that.

    Wish you get more usefull answers than mine.

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    • #3
      Advice needed for galvy mig welding

      Best advice i got-

      Stay away from it.....loll
      Phil

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      • #4
        Silicon Bronze MIG wire...

        Have you considered Silicon Bronze???

        it is becoming more popular in Automotive and HVAC applications...

        here is an interesting site..

        http://wisconsinwireworks.com/weld_galv_steel.html
        .

        *******************************************
        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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        • #5
          Thanks for the link. That stuff sounds like it's exactly what I need. No removal of the galvy required and no paint required for corrosion resistance. Anyone used silicon bronze wire in their mig?

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          • #6
            70S-3 would be better than -6 because of lower Si content. Si does not help with Gal material. Be cheaper than bronze, although bronze is the best long-term / best results wire. Depends on if you will do more in the future etc... I would buy 70S-3 and see how it turns out for you.

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            • #7
              Originally posted by Cgotto6 View Post
              Thanks for the link. That stuff sounds like it's exactly what I need. No removal of the galvy required and no paint required for corrosion resistance. Anyone used silicon bronze wire in their mig?
              I use it for thin un coated sheet metal like auto repair panels. It sucks for galvanized coatings and i like a good S-6 solid wire better. I was a union sheet metal worker in the 80's and welded a million miles of galv duct work, well seemed like a million...Bob
              Bob Wright

              Spool Gun conversion. How To Do It. Below.
              http://www.millerwelds.com/resources...php?albumid=48

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              • #8
                Hey bob, what didn't you like about silicon bronze on galvanized material?

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