Why Did This Weld Fail

[RoyJackson]

No amount of heat increase will solve that problem. That weld broke because of poor design of the components to be assembled. That is about as good as it gets for an example of poor quality from some un-named asian country.

We can feel fortunate those folks aren't designing US and Canadian pipe lines to run under Nebraska. YET

I must disagree...I've seen strong welds with designs similar to that in those pictures. As long as most of the heat is on the heavier section, the weld should have held.
One caveat: Heat, of course, radiates. I don't know what all is inside the cylinder, but I suspect too much heat may damage the internal components.
So, it appears to be more process, then design, related.

As far as the origin of the component, we really don't know that...could even be one of the OP's weld projects.
I'm not a fan of that "un-named asian country" you refer to...but you don't know if this is an import.

 

[JB4310]

The question should be why didn't it fail sooner, it was a poor/ cold fab job, looks like a single pass, flip it over and then fill the holes. You can see it was only welded on 2 sides then just filled between.

A little more attention to detail, maybe a root pass first, (completely around this time) and you should be good to go.

No big drama, clean it up and stick it back together. It'll be better than anything that ever came off that assembly line.

JB

 

[MikeD74T]

[/quote]

Bare feed on concrete w/electricity, no gloves or any other skin protection???? I'm not a member of the safety police but that pic's worthy of child endangerment charges! WHAT THE HE## ARE YOU THINKING??? MikeD74t

 

[RoyJackson]

No big drama, clean it up and stick it back together. It'll be better than anything that ever came off that assembly line.

JB

That kid works pretty cheap, eh?

 

[LD1]

I bet he had a nice sunburn on his legs when done:confused2:

 

[RoyJackson]

I bet he had a nice sunburn on his legs when done:confused2:

Works cheap...and no health insurance...
Where can I hire a baby?

 

[JB4310]

Bare feed on concrete w/electricity, no gloves or any other skin protection???? I'm not a member of the safety police but that pic's worthy of child endangerment charges! WHAT THE HE## ARE YOU THINKING??? MikeD74t[/quote]

OK here, at least this addresses some of your concerns.

JB

 

[rasimmo]

[/QUOTE] that pic's worthy of child endangerment charges! WHAT THE HE## ARE YOU THINKING??? MikeD74t[/QUOTE]

That's a little harsh. He posts a lot of pics that ore not his personal stuff. You don't even know if that was his child. Even if it was, I am sure the kid did not burn 5lbs of rods. Probably just made some sparks then went on to something else.

 

[SandburRanch]

I must disagree...I've seen strong welds with designs similar to that in those pictures. As long as most of the heat is on the heavier section, the weld should have held.
One caveat: Heat, of course, radiates. I don't know what all is inside the cylinder, but I suspect too much heat may damage the internal components.
So, it appears to be more process, then design, related.

As far as the origin of the component, we really don't know that...could even be one of the OP's weld projects.
I'm not a fan of that "un-named asian country" you refer to...but you don't know if this is an import.

I must disagree.

To get a professional weldor to re-weld that without making a design change you would have to find one that has a sign above his door that reads --- IDIOT WELDING SHOP ---.

 

[MikeD74T]

that pic's worthy of child endangerment charges! WHAT THE HE## ARE YOU THINKING??? MikeD74t[/quote]

That's a little harsh. He posts a lot of pics that ore not his personal stuff. You don't even know if that was his child. Even if it was, I am sure the kid did not burn 5lbs of rods. Probably just made some sparks then went on to something else.[/quote]

Maybe a little over reactive, but not the least bit too harsh. The stupidity may be misassigned but it's stupid never the less. MikeD74t