MIG with argon

[dom14]

This is the above weld close-up. It looks like to me either argon starvation or if not that then argon cooling the weld too much to make it a useful weld.

The weld beads(or balls rather in this case) aren't welded to the base piece at all. I can break them off easily with the screw driver.

https://youtu.be/mfYLnXJT6JE

[dom14]

In one photo it looks ok but the rest appear to show brass covering the inside of the gas holes , the tip is copper so it's not the tip , did you check the holes Dom or can you take a photo at a better angle of the gas ports .

If you meant the gas holes on the MIG nozzle holder?
Gimme a minute. I'll take few pictures and upload it.

[Ben-e-boy]

This is the video of the MIG welder welding with maximum settings. Amps/volts highest(130 amp MIG welder) & highest line feed speed. The piece of metal is ground to remove all the gal.

The gas tap is fully opened on the bottle, and the flow meter knob is fully open as well.

https://youtu.be/KAHQXcitywQ

Why are you just waiving the gun around? You aren't going to get anywhere doing that crap.

[BigRAWesty]

Pure argon is a pain with mig.
Argoshield has oxygen and carbon dioxide??? In it.
These serve 2 purposes.
One is to create a better arc transition so a smoother weld, but also more heat.
So with pure Argo you'll find you'll always have a rough, tall weld.
I tried playing with argon as I had the bottle with my tig welder..
It's a pita and just but the bullet and got argosheild

[BigRAWesty]

Ok just went into the thread more.
First post looks like your trying to weld galv steel..
That'll explain a lot of it.
Throw it in the bin and get some scrap black steel from a workshop.. (if they are decent they'll let you grab some scrap from bins..)

Secondly.
That's a very small mig.
3mm think will be about max material thickness.
And .8 wire max.
.9 will be to big and require to much to weld it.

Ok.
So undo the wire feeder wheel.
Pull the trigger and set your gas flow. Want between 12 and 16 lpm.
You should be able to hear it and feel it on your cheek.

[GQtdauto]

Pure argon is a pain with mig.
Argoshield has oxygen and carbon dioxide??? In it.
These serve 2 purposes.
One is to create a better arc transition so a smoother weld, but also more heat.
So with pure Argo you'll find you'll always have a rough, tall weld.
I tried playing with argon as I had the bottle with my tig welder..
It's a pita and just but the bullet and got argosheild

Depending on output and setup it shouldn't matter Westy I have tried all combinations over the last 20 plus years , we only use straight argon at men's shed with no trouble at all , if you had to choose one gas and one gas to cover all applications it would be argon .
Check with Dr google and you'll find it's a common diy gas , if you were only ever going to weld low carbon steel I'd probably go a mix but the cost these days for swap and go is the same .
Dom can do stainless steel with his Tig if needed so it's a better option imo.

[GQtdauto]

Why are you just waiving the gun around? You aren't going to get anywhere doing that crap.

Mate Ben is right what are you doing way too fast and erratic with the hand piece , try pushing only and slow down .

[BigRAWesty]

Depending on output and setup it shouldn't matter Westy I have tried all combinations over the last 20 plus years , we only use straight argon at men's shed with no trouble at all , if you had to choose one gas and one gas to cover all applications it would be argon .
Check with Dr google and you'll find it's a common diy gas , if you were only ever going to weld low carbon steel I'd probably go a mix but the cost these days for swap and go is the same .
Dom can do stainless steel with his Tig if needed so it's a better option imo.

Sure it's common but has side affects.
It'll weld, but you won't get smooth welds like argosheild. And with a welder that has 6 settings you need all assistance you can get..

Ok so just watch the vids..
It's still galv. That's what the black is coming from.
Hot dipped galv sheet of that thickness is probably penetrated 100%.
So imo to go forward, go bin that galv stuff.

Also don't just drag it. For setting up just hold it in one spot and pull the trigger..

[BigRAWesty]

Ok so you know what your up against.
As you'll see below the argosheild is a far smoother, flatter and consistent weld.. (left and top)
I simply swapped to argon, and left everything else the same, even the 12lpm flow rate.
As you can see it's much rougher, taller and looks cold. (Right and bottom)
You can also noticeable hear the difference..
You can also see the wide silver ring around the argon. That's the arc wandering. Because argon doesn't carry the arc as well it wanders, which creates that cold affect as the heat is wasted..

[Ben-e-boy]

Pure argon is a pain with mig.
Argoshield has oxygen and carbon dioxide??? In it.
These serve 2 purposes.
One is to create a better arc transition so a smoother weld, but also more heat.
So with pure Argo you'll find you'll always have a rough, tall weld.
I tried playing with argon as I had the bottle with my tig welder..
It's a pita and just but the bullet and got argosheild

Last time I tried straight argon with a mate the weld looked darker, even though we could see it getting into the root, the toes looked really cold

Edit
Just looked at the pics. That's what it looked like

2nd edit

You should cut it in half and polish and etch ( if you have any), see what the peno is like