Technical What is this welding process?

I've never seen a HAZ pattern like this, What is going on here?

 

*looks* like thin sheet metal being welded. consistent raised nugget size seems to indicate filler is being used. I'll vote TIG/GTAW. The color comes from a lift off after a short interval to prevent warping.

 

My guess is Mig. Looks like they are throwing down 5 spot/tack welds in a row then letting that area cool. Each Haz seems to surround 5 close tacks. Repeat. Repeat. Repeat ...

 

I vote for tig welded

 

I'm not impressed: look close, you'll see a lot of pits/holes in the weld which is never a good thing.

 

All I can say is that is well above my abilities. That is some nice welding.

 

I agree with the mig determination.

 

I vote for MAG welding,,,

 

That is just first pass. Once that is ground down the vacancies will be obvious and you go back over and fill them in with more MIG. I don't TIG, don't own own (yet), this is how I do it and it works fine. Time consuming, but works.

 

Lots of tacks in a row.

 

Really bad Mig stitching. Machine settings are too cold with too tight of gaps. HAZ looks fake, like someone torched it on with a mask of sorts.

 

Looks like spot welds with a mig, it also looks like a da has been run over multiple passes at times with more spot welds added.
Stitch welding will have a run of even one quarter inch so those are not stitch welds.

 

MIG

 

MIG BB welding, try that on a flat panel see what happens, not good!

 

MIG, turn it up! I'd like to see the other side. I'll bet the penetration is not good.

 

Looks like Mig to me too.......... Staying on cold side to prevent burn thru. Grind flat and do it again.....maybe a little warmer now that there is some metal already in place.

 

mig. most likely lacking penetration.... or could it be gas welding? either way it is an odd way to do it, fitment looks good though.

 

looks like that when I mig with a clothes hanger... and it looks like that on the other side..

 

that happens when you pull the clothes hanger away... you start the weld on the wire and it drops the metal on the metal... this is one time where you DON"T want a big gap to fill...

 

that hase pattern comes frpm the mig being at 20 degrees to the metal

 

the haze is supposed to look like bat wings... so the welds look spot on to me

 

no one that didn't know what they were doing could ever make it look like thaat...

 

It's MIG stacks. Moving around to keep it straight. If you could access the back, and had a helper who could even in rudimentary fashion use a hammer and dolly, you can stretch the welds as you go with a few gentle love taps while the red is going away. Do it with EZ-Grind and you'll look like an artisan of the highest order. Can't hit it too hard, but if it looks like the head of a tack you nailed it (no pun intended). They don't crack in process either. Once your mojo is on you can do a no-fill repair.


I left the original corners in and kept a perfect deck lid opening.

Then I welded it like I said, a gentle tap on every 2 spots, ground and metal finished. No mud needed

 

looks like I missed this post... spot on...

 

It’s Tig, they’re doing say 10 pulses then moving the distance of ten pulses in to the un welded section and welding towards the weld, some say it helps with heat distribution and keeping the sheet metal from warping. I think it’s a waste of time. The heat color pattern in this style tells me this is what’s going on.
Is this that 57 ford? The s patch looks familiar

 

That looks like MIG (or MAG for the picky crowd) the dead give away is the dip in the center of the spots, TIG doesn't do that.
I'd be curious to see the underside.
To me it looks like they set it at a low amperage probably too low to try to not distord and a tad too much wire feed for the power setting. It wouldn't surprise me to see a lack of penetration on the 3 first spots of each stack.

 

Definitely mig and terrible cold welding. Pure junk for a root pass.

 

Revampedridesrc on instagram, the level of metal shaping alone tells me it’s not mig

 

Yeah that shop, I saw it pop up on my feed and was immediately saying wtf is going on with that HAZ.

I just read his method on an IG post, it is TIG.

 

Well, it doesn't appear to have warped. It also appears to have a lot of holes in it. I certainly expect that its not the finished product.

I've seen a lot of "shops" that would sand off the high spots and fill the holes with filler and call it welded. Six to eight months later it was in a different shop getting "fixed", maybe.