Pipeline Welding - Spatter
Pipeline Welding - Spatter
(OP)
Hi to everyone, I'm having a problem with an approved WPS for welding a 18" 7.92mm pipeline.
WPS have SMAW for the root and FCAW-S for the Fill and Cap. The first x-rays showed too many spatter in the bottom, that makes the film impossible to interpret. I know that this is a issue already known when using the SMAW process and not having access to the inside to clean. But now we are having a very big problem... can someone give me some advices?
WPS have SMAW for the root and FCAW-S for the Fill and Cap. The first x-rays showed too many spatter in the bottom, that makes the film impossible to interpret. I know that this is a issue already known when using the SMAW process and not having access to the inside to clean. But now we are having a very big problem... can someone give me some advices?





RE: Pipeline Welding - Spatter
Is the welder using the same electrode for the root pass?
Is the welder using the same parameters when depositing the root pass?
Has the configuration of the groove been changed?
Has the root opening or root face been increased or decreased?
If you were getting acceptable results before, but now you are getting unacceptable results, something has changed.
Since the root is deposited with SMAW, the root bbead should be the same as before if there are no changes. Next, ask the welder if the initial weld bead deposited with FCAW is "blasting" through the root bead. In other words, is the welder remelting and burning through the root bead deposited with SMAW?
Best regards - Al
RE: Pipeline Welding - Spatter
RE: Pipeline Welding - Spatter
RE: Pipeline Welding - Spatter
Dik
RE: Pipeline Welding - Spatter
It's very strange that they can't do the work with the approved WPS.
RE: Pipeline Welding - Spatter
Are they welding vertical up or down ?