Uphill mig

[pondy]

Dug my portamig out today, not used it for many months while I taught my weld stick and now tig.
Having a general mess about with various joints, then tried uphill tee joint, something I had Not done a great deal of before but have never turned out this bad.
The results I was having is the weld material starts to pour back down the joint leaving a horrible mess, tried less power, less wire feed and also changed my travel speed but nothing mad a difference, I was using a upside down v motion pausing on each side for a seconds then wiping back to the other side.

Do I need to use the same settings than if in was doing a tee joint in a horizontal position?

 

[Daneishwelder]

Hi mate I've recently mastered the uphill mig if you go to a few posts before this you'll see mine. What's your voltage your spend and thickness I'm running 5-10 mm fillet up hills. With varying for look of 16.5 v to 19.2 v and 5.5 to 7.0 MPs on speed try instead of the v at first use a curve stack your welds either side. Just I front of your pool

 

[Daneishwelder]

A curve like a rainbow not a underneath although the that's what it looks like

 

[Brad93]

If the material being joined is less than 5mm don't bother running uphill just downhand / stove it.

Every machine is different so you will just have to keep playing with the settings. Technically you should put in a straight run, a stringer, for the root then if the wps allows you can cap it with a weave.

You need to pause on each side of your v and quickly whip over the middle. Personally I find the triangle method works best but everyonevwwlds different thats part of the fun

 

[pondy]

I had another go at this yesterday and got some better results, I was trying to upload pictures last night but had a issues in doing so. Plate was 4mm .

I was doing an upside down v but think I was spending to much time in centre between whip and pause and it was building up a lot, leaving a large convex bead.

More practice needed

 

[Richard.]

Dip transfer is the key. Pause at the edges flow over the centre to the next edge and pause. No matter how thick the material is with solid wire you need to be in dip transfer. I was doing some V up open root trials recently with fcaw filling/cap. Good conditions for the v up solid wire root. with a 0.8 wire 4.0 Mtr min, 17volts was pulling 100-120 amps. This worked well I found.

 

[welkman]

I am working on this at the moment, have been working through all the videos from welding tips and tricks and this is by far the hardest thing to get right. It all just globs up and produces a drippy horrid looking bead. Half the problem is vision. Will have another go when I finish my welding table and have a better position to work from.

 

[Daneishwelder]

Do a downhill root pass first I use this as my guide also heats the metal. Try and give a. I've throat size and use each side of your weld to hold litterLly whip across the middle spending hardly an time in the middle focus on each side of your root

 

[Daneishwelder]

Your stick out wants to be pretty close aswell I found this helps.

 

[Kent]

Slightly more wire speed than normal. Run faster dwelling slightly in corners and fair zip across. Keeping pretty square on
I don't think what shape you make or call it matters so great as fairly going at it with enough wire
Don't spray you need a nice tight arc even a slight nudge up of the wire feed can help a bunch so play with it

 

[welkman]

Thanks for the tips, will have another go soon