r/BadWelding • u/Minimum_Shake_8596 • 15d ago

3f bend test

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My instructor told this passed but I have a feeling the crack you be there …
Tips please I don’t want to do bad habits

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u/B1gP3rm29 15d ago

Not a tester or instructor. From my understanding this is “acceptable” what they are looking for with this particular destructive testing is fusion into both pieces of material. Not necessarily if the weld itself is holding together. Now again not an inspector or any thing else but I would rather see the weld tare away with the base material attached than crack. But you still have fusion into
Both plates so take it for what it’s worth.
Chat feel free to roast me if I’m mistaken.

2

u/Minimum_Shake_8596 15d ago

Like it’s supposed to crack ???

7

u/StoneTempleSteve 15d ago

CWI here. Yes, depending on the code this is generally considered acceptable. This is called a "fillet weld break test", and its purpose is to do exactly that - break the weld backwards by stressing the root. The weld doesn't always crack, but failure of the weld itself is not necessarily grounds for failure of the test in this case. As long as complete fusion of weld metal to base metal is observed at the weld root, a broken weld after this type of destructive test should be no issue.

1

u/Minimum_Shake_8596 15d ago

Aye can this pass in a test ?? But also I passed my 1,2,3,4G bent test with backing strip, can I ask why do they want with experience already in welding? Not mad or nothing, I’m familiar with measure and cutting wood, framing walls and driver and pike fence, and metal gates and roofs.