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  1. #1
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    542

    Default 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. #2
    Join Date
    Mar 2011
    Location
    st-eustache qc.canada
    Posts
    204

    Default

    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.

  3. #3
    Join Date
    Feb 2013
    Location
    Canada
    Posts
    84

    Default Advice needed for galvy mig welding

    Best advice i got-

    Stay away from it.....loll
    Phil

  4. #4
    Join Date
    Nov 2003
    Posts
    3,095

    Smile 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
    .

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  5. #5
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    542

    Default

    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?

  6. #6
    Join Date
    Apr 2012
    Location
    Ohio
    Posts
    25

    Default

    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.

  7. #7
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,899

    Cool

    Quote 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, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  8. #8
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    542

    Default

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

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