Tig welding titanium.

[Brad93]

well i would say 90 percent of all the exotics for the oil industry have been done with them meters we talking inconel ,duplex ,super duplex with g48 tests too
IF the client specifys the super duper HFT im sure he would get it no doubt

put it this way id be confident to do a titanium butt on pipe with a pe 100 i could tell the moment i struck the arc up if it was running clean ,what do think we did 30 years ago when we welded cunifer ,and other exotics without a meter ,
remember i was in BAGDHAD when you were still in yer DADSBAG

I'm not saying it can't be done Z only that its kind of moot to be using a tool which doesn't have the right resolution for the intended application. I don't own an purge monitor but any titanium I do always comes out silver inside. I just purge it right and like you say it's like mud if the purge isn't where it needs to be.

 

[zeppelin builder]

On a similar note, what are inconel/monel/fancy high temp nickle alloys like to weld?

easy enough get a kinda greenish glow with inconel sometime hard to see when capping ,duplex is lovely and clean ,stainless a bit more fluid ,get the purge right plenty gas you can vent it off ,you will reduce it as you do you final tie in on root .keep an eye on the interpass temps can be just 150c on duplex forced air cooling is utilised too heres a selection of exotics , ps all purges checked with the pe 100 purge meter . some of the exotics require a argon/nitrogen mix