Hi,
When welding an Aluminium T joint we are getting what looks like wormholes porosity, as seen on the right in the attached photo, along the root.
Any suggestion on were this is coming from and a how to fix ?
Mick
It might possibly be down to surface contamination, resulting in the release of gaseous material under the weld pool. Cleanliness is important, and even more so with aluminium. Just running a finger over the prepared edges of the metal will leave a thin greasy deposit. Using something like panel wipe before welding will help, but the cloth used for applying the panel wipe needs to be clean also. .