How can weld full penetration thickness 1.6mm by GTAW manual process
How can weld full penetration thickness 1.6mm by GTAW manual process
(OP)
Dear My friend,
I have sigle V joint thickness 1.6mm, OD: 12.7mm. How can to weld??
I have sigle V joint thickness 1.6mm, OD: 12.7mm. How can to weld??





RE: How can weld full penetration thickness 1.6mm by GTAW manual process
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
Stanweld: Yes, we can use square bevel, In my company dont have automatic, orbital, autogenous equipment, only have GTAW manual processs. We try to manny time but can not weld.
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
-Cut each tube square. This may seem obvious, but the ends must be cut squarely and burr free for the process to work. This can be done with an orbital cold saw.
-Fit-up the tubes with no gap.
-Setup the gas purge. This is an argon purge with a low L/min (CFM) flow rate and a hole to ensure the gas is not trying to escape from the area to be welded as you are closing the weld.
-Use no filler metal, a sharp tungsten, and appropriate amperage (40A is a good starting point).
-Keep the torch on an area until you see the material look as if it is going to fall in, then move to the next. This will happen more quickly as the tube heats up.
-Practice, practice, practice.
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
B.E.
You are judged not by what you know, but by what you can do.
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
I agree with all of fegenbush's advice but I would query the no filler metal.
Having welded miles and miles of s/s tube (dairy factories and breweries) in NZ I would always use the bare minimum of filler wire - on that OD a few "dabs" with a 1.6 mm wire.
As the addition / deletion of filler metal is an essential variable (I am presuming we are talking ASME IX) you would need a separate PQR/WPS for autogenous welding whereas an existing s/s PQR/WPS could be used if you were adding filler metal.
Regards,
DD
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
I watch the race between the US and NZ. What a nail biter! Those boat literally fly around the race course on hydrofoils!
Best regards - Al
RE: How can weld full penetration thickness 1.6mm by GTAW manual process
Still in Malaysia (where it is not televised) so just catching news reports.
Got my fingers crossed for the kiwis though,
Cheers,
DD