FIllet Weld Cracking
FIllet Weld Cracking
(OP)
We fabricate a pressure vessel using SS304 material. Stiffener ring is welded on the outside of the vessel using carbon steel plate. The ring is welded intermittently along the shell using 309l electrode(SMAW process).
Lots of cracking found at the centreline of the fillet weld. We dont know why it happens. But after that we change using fcaw process and the problem solved. no more cracking happen.
Anybody had any experience with this kind of problem??
Lots of cracking found at the centreline of the fillet weld. We dont know why it happens. But after that we change using fcaw process and the problem solved. no more cracking happen.
Anybody had any experience with this kind of problem??





RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
http://www.lincolnelectric.com/en-us/support/proce...
RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
How thick is the intended fillet?
Why intermittent weld on the stiffener?
Why that choice of that particular length of intermittent fillet?
RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
metengr thanks for that. will do some research. It could be the SMAW electrode problem as we are not using the high end brand.
RE: FIllet Weld Cracking
The easiest way to mitigate the probability of cracking is to have the welder fill the craters to the full cross section by reversing the direction of travel when he terminates the weld. This is true regardless of the welding process. Concave unfilled craters are the surest way of initiating a hot crack.
Best regards - Al
RE: FIllet Weld Cracking
RE: FIllet Weld Cracking
How do you store your electrodes? They need to be kept dry, and that usually mean warmer than surroundings
When SMAW welding did the electrode get real hot when half used up?
=============
http://www.millerwelds.com/resources/articles/smaw...
http://www.lincolnelectric.com/en-us/support/weldi...
http://www.thefabricator.com/article/arcwelding/cr...
RE: FIllet Weld Cracking
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"