Rocky D's Vertical up Technique attempt #2

[Dan]

Rocky

Last night at work I had to attach some 3" X 3" X .250 sq tube mild steel to an 8" mild steel Rd tube column with a .375 wall thickness, which resulted in needing to run some vertical up welds. Instead of using my normal technique for vertical up with MIG I decided to give yours another try. Last time I tried it I was pretty close to nailing it, but not quite there yet. This time around by my 3rd practice weld, I think I finally master the technique. Not bad considering this makes a total of 8 welds that Ive ran with this technique. I wish it would have been this easy back when I was in school.

Anyway, as usual I have a few trophy welds to show off. On the this first bead the wire was a little low and didn t quite fill the joint in the way that I wanted.

[Dan]

On this second attempted I increased the wire, and got the results that I wanted.

[Dan]

This 3rd attempt was at the same settings as the 2nd, I m just including it to show the the 2nd attempted wasn t luck.

[Guest]

I think this is what Dan is doing,

[Guest]

Remember Dan, once you achieve, it's all down hill from there!

[Arc Burn]

Rocky D,thats one of the same techniques i was taught for stick welding!i never thouht of using it for wire feed,thanks

[ZACHV]

Originally posted by Rocky D
I think this is what Dan is doing,

Is the gun angled down to push the puddle, or angled up to drag the puddle? About what degree? I would assume the gun is angled down about 10 degrees to push the weld a little.

[Guest]

Originally posted by ZACHV


Is the gun angled down to push the puddle, or angled up to drag the puddle? About what degree? I would assume the gun is angled down about 10 degrees to push the weld a little.

I usually do a 5 degree up angle. Just like stick. You can also reverse direction every other pass. When done it will look like a stack of 8's laying on their side. Real pretty!

[Big Nate]

That is beautiful

~Nate~

[ampdog]

At first I though vertical up and vertical down had something to do with the position of the joint LOL

Thanks for the diagram Rocky D, is vertical down the same pattern, just in the other direction? In what situation should we use these techniques?

Whats the difference between Dan's usual vertical up and Rocky's vertical up?

[Guest]

Originally posted by ampdog
At first I though vertical up and vertical down had something to do with the position of the joint LOL

Thanks for the diagram Rocky D, is vertical down the same pattern, just in the other direction? In what situation should we use these techniques?

Whats the difference between Dan's usual vertical up and Rocky's vertical up?

Vertical down is different, as you have gravity pulling your molten metal on top of your puddle. I used vertical down in making stainless steel (316L) tanks for our metals processing department. The tanks were 15' x 5' x 8' high. The material was 14 to 16 gauge. You start at the top, and watch to stay just ahead of your puddle...sometimes the puddle catches up with you and ball up and fall on your shoes! No oscillation or weave, just zip!

On some other non-critical joints, on steel or heavier metal I use a slight side to side motion, always being careful not to let the puddle over run. When we were buildng trains we had to certify in down hand MIG. So there is a need for it.

[Dan]

Originally posted by ampdog
At first I though vertical up and vertical down had something to do with the position of the joint LOL

Thanks for the diagram Rocky D, is vertical down the same pattern, just in the other direction? In what situation should we use these techniques?

Whats the difference between Dan's usual vertical up and Rocky's vertical up?

Heres a sample of my usual technique. This was produced with my HH 175 here at home. This could have been better, I had the wire speed set a little to high.

[ZACHV]

Originally posted by aweaver
Now if only I could get to see them in my shop......

Aaron

Maybe have Rocky or Dan come over...

[Big Nate]

in your diagram do the red dots signify a pause, change of direction or ?

thanks

~Nate~

[ZACHV]

I don't want to answer for someone else's work, but from a reply in another post on this topic it was mentioned that the red dots are indeed pauses to add additional filler material so as not to undercut the base material.
HTH.