welding 6061 T6 aluminum for testing
welding 6061 T6 aluminum for testing
(OP)
I am doing a welding test in 1g on .040 6061 T6 aluminum for an aircraft ticket. My cap looks great but my root pass gets a line almost like a seam all the way along the weld. I hope someone knows what I am talking about? People I have talked to say that it is always there, Any takers why or how to maybe cure the flaw?





RE: welding 6061 T6 aluminum for testing
I presume you are using GTAW. If so, you could try to manipulate bead placement, adjust the root gap or your travel speed when pulling the root.
RE: welding 6061 T6 aluminum for testing
could you pl elaborate more
RE: welding 6061 T6 aluminum for testing
This is a oxide, not to worry ,but you have to clean the joint with acetone followed by mechanical brushing, cleanig is very important, after cleaning, welding is to started within 3 hours