Welding Fail! post pics here.

[denverguy]

Working with metal or working with smelly chemicals ? I think all the members here would choose metal construction.

I have a Van's RV6 two wheeler sitting in the crates. Waiting for that winning lottery ticket so I can retire and hide away in my shop and build the thing (after buying a twin turboprop to use while I build the RV6 )

Much can be (and I would argue should be) done with pre-impregnated glass and/or carbon fibers, vacuum bagged, then baked. Very little smelly chemicals and much less smelly/deadly than that zinc-chromate paint on the aluminum interior of the structure.

Good luck with the lottery, but I'm trying to beat you to it.

[albrightree]

the forktruck and the pallet jack had a run-in. The pallet jack lost.







Doesn't look as though the weld broke through the scale on the cast part. It lasted 25 years that way, so I'll just mig the handle back on. Might just get another 20 more years out of it.

[albrightree]

Snap-on YA212 with 70-s6 .035 , 75/25 gas 20 cfh (outdoors)










Will now re-assemble, who knows how long it will last ?

[6Boys]

That oughta do. I've gotten a couple of free easy fix pallet jacks because they don't want to fix them. Rather buy new

[Munkul]

This is either 24 or 26 volts on some painted I beam that might be thinner then 1/8” and 11 gauge steel. I like it to really be able to dig in like this when I move forward. I like to have a aggressive movements and the welder needs to be hot for that style. Can weld faster this way and get way better penetration over slow welding at low volts
Attachment 1711755

fail! Because he doesn't want to understand what a "good" weld is.

[Willie B]

fail! Because he doesn't want to understand what a "good" weld is.

Are we talking about Moto? He doesn't understand much, but a good weld, he understands.

[Munkul]

Are we talking about Moto? He doesn't understand much, but a good weld, he understands.

Does he?
Anyway I'm sniping, I shouldn't have, and I'll stop now.

[motolife313]

the forktruck and the pallet jack had a run-in. The pallet jack lost.







Doesn't look as though the weld broke through the scale on the cast part. It lasted 25 years that way, so I'll just mig the handle back on. Might just get another 20 more years out of it.

Some say that’s how the weld is supposed to fail

[motolife313]

fail! Because he doesn't want to understand what a "good" weld is.

Thank you, the crater could possibly start cracking and fail yes.

[Welder Dave]

Some say that’s how the weld is supposed to fail

The weld looks pretty crappy but would need to see better pics. The weld is too small the tube thickness for one thing. Fillet weld break tests are based on the proper size weld and welding technique. Crappy welds all bets are off.

[Munkul]

Some say that’s how the weld is supposed to fail

Some would be wrong.
next to no penetration past the toes. Hence it's broke at the weakest toe.
Its classic MIG lack of penetration.

[albrightree]

The weld looks pretty crappy but would need to see better pics. The weld is too small the tube thickness for one thing. Fillet weld break tests are based on the proper size weld and welding technique. Crappy welds all bets are off.

OK , call my weld crappy, but I thought the pictures were pretty spot-on. LOL












Many manufactured items have welds like those. Hot fast shallow. The handle simply popped off with no damage to the cast piece. in fact the weld metal at the bottom of the tube(that didn't fuse with the casting) has the same texture as the casting.

[albrightree]

Operators were removing covers on a spiral conveyor. Had to use mallet to move stuck cover. They didn't have to hit it too hard, then this fell off. 3/4"x1/2" bar welded(slagged to) 11ga. sheet. 304 stainless steel.






Would have liked to spent some time on this, but there was a big push to get material produced. Ground worst parts off, flap disc on plate, a few short mig welds, wash , sanitize, install. next.......

[John T]

No penetration at all.
.





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[Shootr]

This thread is my motivation to practice, practice, practice. I look at these pics, then head out to my bench and grab some scrap, paper and pen, and find out what I'm doing wrong today (Did I turn the bottle on, did I turn the fan away from the area, how does this inductance setting work, etc.)

So much like the driving range - a few bad shots, then a sweet one - then "what did I just do?"



By the way - was does raising and lowering the inductance actually do - in laymans terms?

[motolife313]

Turn the wire speed and volts up john

[lars66]

inductance controls the harshness of the arc and the resulting spatter. Also do what moto said.

[Welder Dave]

Inductance controls the pinch rate of the wire droplets in short circuit mode. It's a very nice feature to have and would be good to experiment with. I thought we established that Moto has his own ideas on Mig welding that don't jive with established procedures. For Shootr it looks like your travel speed is too slow for the amount of weld metal. Adjust one parameter at a time. I would try a little faster travel speed and then turn the volts up in very small increments to flatten out the bead. See what it does but remember your starting point. You could try turning your wire feed down in small increments too so it better matches the voltage setting. Slow side to side twisting/weaving or little circles can help with bead shape and tying the toes of the weld in.

[Willie B]

Jody always talks about "No intentional motion".
He oscillates a bit, some people don't. Drawing a straight line might be natural for some people. For others a straight line does not come easy. I can't draw a straight line. It oscillates somewhat.

What I'm saying is a bit of motion is needed to flatten a bead. Not much,

MIG is known for Lack Of Fusion. To visually inspect a MIG bead, look at the meeting of weld (filler) where it meets steel that hasn't melted. It should spread, like it was wet. If you can see it in cross section, it looks like a bead of water on a neglected hood. If it beads up, like new wax would, it is too cold. Under stress, LOF (lack of fusion) will fail where filler meets weldment.

[docwelder]

No penetration at all.
.





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i've seen that lack of fusion when one of our "welders" used straight argon in the solid wire mig machine when co2 wasn't available. the weld penetrated on one side and just sat on the surface of the joint without the least bit of fusion.

[TimmyTIG]

There's a whole lotta fail going on in those pics, paint dripping, wall penetration caulking...

[motolife313]

I’ll just post this here so munkul doesn’t have to move it from show us what you welded today thread to here I ran everything at 21 volts 258 wire

[John T]

i've seen that lack of fusion when one of our "welders" used straight argon in the solid wire mig machine when co2 wasn't available. the weld penetrated on one side and just sat on the surface of the joint without the least bit of fusion.

Yeah it’s funny they had a great welder there for about two months
Welding all the gas pipe connections from the street to the buildings to the rooftops etc.
I talked with him a couple times over coffee.

I got the impression that he was making some good bread $$$

Must have been so

Because when he was done they brought in the monkey crew to fab up the protection guards.
Out of about 25, probably 15 are busted already.
LoL!


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[John T]

There's a whole lotta fail going on in those pics, paint dripping, wall penetration caulking...

I think the paint was holding them together.
LoL!


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[TraditionalToolworks]

I think the paint was holding them together.
LoL!

It's only gas John, would could go wrong?