Welding Tips and Tricks

Welding

Cleaning up the breaks

Here’s the problem

More problems.

Thats a nice example of a good looking mig weld that is actually garbage.

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JayWal wrote:Thats a nice example of a good looking mig weld that is actually garbage.

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Might adjust my opinion a bit. That weld split in the center. Says to me that the weld had a stress point, hole or crack, at the beginning of the bead. That led to a stress point. Bad weld would have torn away from one side or the other if it was cold. Posible that the weld was undersized but that comes down to a design or Qa issues. Split in the middle says the weld held to its max capacity to both sides but couldn’t deal with max forces.

There’s a metal plate that runs between the two welds

Poland308 wrote:

JayWal wrote:Thats a nice example of a good looking mig weld that is actually garbage.

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Might adjust my opinion a bit. That weld split in the center. Says to me that the weld had a stress point, hole or crack, at the beginning of the bead. That led to a stress point. Bad weld would have torn away from one side or the other if it was cold. Posible that the weld was undersized but that comes down to a design or Qa issues. Split in the middle says the weld held to its max capacity to both sides but couldn’t deal with max forces.

Looks to me like a 3 pass weld, and it split right along where 1 pass is laid onto the previous one. But it gets a little blurry when you zoom in that far. You might be right

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Bls repair wrote:There’s a metal plate that runs between the two welds

Ah ok. Gotcha.

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I do believe that the issue here is people using a mig but not keeping the proper travel speed. It's easy to go slow and think you are putting in a big weld, but really you are just putting in caulk. If you go fast enough to keep the wire chewing into the base metal, she ain't going anywhere. But it may require multiple runs.

Long story short, mig is easy to get wrong. No safety net, as jody says.

Where the split is you can see the factory edge with NO marks on it

weldin mike 27 wrote:I do believe that the issue here is people using a mig but not keeping the proper travel speed. It's easy to go slow and think you are putting in a big weld, but really you are just putting in caulk. If you go fast enough to keep the wire chewing into the base metal, she ain't going anywhere. But it may require multiple runs.

Long story short, mig is easy to get wrong. No safety net, as jody says.

Yep kinda what I was trying to say. I got nothing against mig, but it is possible to get a weld that looks good, but has zero penetration.

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I agree. I have a Mig machine but it’s my las option I chose. Don’t get me wrong it has it’s place but like said it’s easier to mess up than to get right. Good enough isn’t always right.

weldin mike 27 wrote:
Long story short, mig is easy to get wrong. No safety net, as jody says.

this is why stick is better to learn welding with.

You should always learn how to walk properly before you try to jog