I highly doubt there's neither of the above around where I live, but I'll try. Thanks for the tip.

 

Lol, hmmm aerospace industry ehhh... well i live in florida lol looks like if my **** breaks ill just have to drive to NASA and ask them to reweld it for me. I think you could consider them the rocket propulsion / aerospace industry leaders dont you lol.

 

I'd love to see how that works out for ya!!! Don't think of holding your breath ;-)

Lets see - a 4" weld could cost a measly $1000 or so...

 

Actually, I found a couple of places around where I live who can and will do Ti welds. Hopefully, they turn out for the better.

Apparently, a lot of motorcycle shops are able to do TIG welding and they're not too hard to find. Also, if you have race shops (which is where I'm taking mine, I think), they'll most likely be able to do it. Craigslist also returned one person who is ASME certified and can do Ti welding.

Anyway, I'll most likely get this done today or tomorrow, so wish me luck.

 

welding titanium is not that hard,just make sure they gas shield the inside of the pipe and stress relive the welded area after it cools.

 

VERY COOL!!! Let us all know who, what and where...very good info to have!!! Some pics of before and after, and even their shop would be beneficial as well....if you can.

Rick

 

Any updated info on this?

 

If you're referring to me, then yes, I did get this done. It was welded at Brink Racecraft in Irving, TX. They do a lot of the welding work for other performance shops also. It didn't cost much to do it (I paid $60 to get the cracks welded), neither. Overall, they did a very good job of welding. I think the easiest way would be to find a reputable performance shop near your area and ask them where they get their welds done. Then ask that welding shop if they're qualified to TIG weld and if they are, get it done there.

 

and you had Titanium welding done?

 

I'm guessing you didn't read the whole thread?

Yeah. I used to have a Fujitsubo Super Titanium exhaust, which is a fully titanium exhaust. Part of the exhaust had a crack (long story), which was professionally GTA welded by a race shop.

 

I did read the entire thread. Just wanted to clarify. thanks.

 

did they stress relieve it ? if not it will crack around the weld.

 

What (and how) is stress relieving? Also, the crack was caused by an abnormal upward pressure on the exhaust system (from a dyno day). They strapped down the car wrong, where the strap was pushing up against the midpipe. The unnecessary stress already on the midpipe, in addition to the car squatting down with force during the dyno runs, caused the crack in the midpipe and also caused the ypipe to break both of its flex joints. Under normal conditions where there's very minimal movement in the exhaust system, there shouldn't be any cracks around the newly welded.

 

mixed alpha-beta alloys(titanium)are sensitive to micro changes caused by heating and cooling above 1500f ,and are subject to embrittlement by welding.welds on commercially-pure titanium may be stress relieved at 1000f and air cooled.basically the welding made that section of the pipe very brittle and to help the areas around the weld not crack you need to heat to 1000f.

 

And this is especially important since it sounds like someone just TIG welded it in open air. Even if you use lots of shielding gas it is still not the proper way to do it and there will be embrittlement from impurities.

 

+1 if the pipe is already mounted just make a couple of passes with an oxy-acytl torch with the oxygen turned up past the point that the flame is acceptable for cutting.you dont want glowing metal but close,it's not ideal but better than waiting for it to shatter like cast iron.EDIT they also sell temp strips that tell you what temp you have reached,it should help if your torchman has little experience with ti.