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  1. #1
    Join Date
    Nov 2006
    Location
    Startford, Charlottetown, Prince Edward Island, Canada
    Posts
    304

    Talking Mig vertical up or down?

    Hey guys,
    Its once again been a long time and we are starting solid wire. After my OJT placement I was mig welding my verticals down but yet my teachers are saying that doing it up will be the best result. But my bead looks very nice going down (so does everyones I imagine) they say that it depends on the job at hand for what way you should do it but can you please enlighten me on your opinions on this topic
    Thanks for reading I hope my post helped

    Ryan

  2. #2
    Join Date
    Aug 2006
    Location
    Raymore Missouri
    Posts
    1,920

    Default

    I know where you're at. My inside corner migs welds look much better going down but I hear vertical up gives better penetration but my welds are sound going down. Maybe try both and go into destruct mode and see what's best.
    Nick
    Miller 252 Mig
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  3. #3

    Default

    dont go down on the first night............... i think its better vertical down. just my.02
    miller 330 abp
    everlast 225lx
    airco 250a tig
    hobart handler 125 mig
    o/a torches

  4. #4
    Join Date
    Aug 2006
    Location
    Raymore Missouri
    Posts
    1,920

    Default

    Is it ok if they carry your books home from school??
    Nick
    Miller 252 Mig
    Miller Cricket XL
    Millermatic 150 Mig
    Miller Syncrowave 200 Tig
    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

  5. #5
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,861

    Cool

    Up is stronger...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

  6. #6
    Join Date
    Nov 2007
    Location
    dallas tx
    Posts
    325

    Default

    for code work with mig the AWS prohibits the use if the method downhill vert .
    simply put it cools quicker and doesn't allow for maximum penetration.
    the reason is uphill offers more penetration ,but it may look worse because your fighting gravity .
    my daddy always said i was IRONHEADED....
    feel free to P/M me

  7. #7
    Join Date
    Aug 2006
    Location
    Raymore Missouri
    Posts
    1,920

    Default

    That's a nice weld to me.........your opinion is valued
    Nick
    Miller 252 Mig
    Miller Cricket XL
    Millermatic 150 Mig
    Miller Syncrowave 200 Tig
    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

  8. #8
    Join Date
    Aug 2007
    Location
    So. Cal
    Posts
    335

    Default Up & Down....

    Going up hill does require more attention and following your puddle can be a bummer especially on out of position welds but as mentioned above it is a sounder weld. Here's my solution PULSE IT!

    TacMig
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  9. #9
    Join Date
    Nov 2007
    Posts
    6

    Default up or down

    I find that up or down they both look similar, but going up will get more penation there for a better weld

  10. #10
    Join Date
    May 2007
    Location
    Grande Prairie, Alberta Canada
    Posts
    729

    Default

    Hey Ryan. Long time, No see.

    Your instructors are correct. Vertical up is the better weld. Instead of digging around my files to find some photos to illustrate my point, I have a field trip for you.

    When you have a chance, slide by Linkletter Welding in Central Bedeque. They should still have several tow behind and fifth wheel style trailers on display next to the highway. What I want you to look at specifically is the welds on the I-beam for the goosenecks. They utilize a Vertical Down (Downhand wash) technique for joint effeciency and production that leaves a lot to be desired.

    When I was at Linkletters last fall (checking them out) I found several of the goosenecks had shallow, concave, sub-standard welds. Some of them, I could even stick the end of my pinky finger into the joint because the weld was so shallow. I'm really not sure how long they will last with the trailer being loaded to capacity.

    I'll stop there. I don't want to come across as trashing Linkletter's. I'm sure that they do some very nice work, I was just disappointed by the trailers.

    And I'm POSITIVE that they last thing they wanted to hear was an opinion from a sight-seeing welder from Alberta.

    Take care young feller.
    Contact me if you need any help.
    Later,
    Jason

    Professional Spark Generator by Trade.

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