TIG Welding Titanium
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- Опубликовано: 5 сен 2024
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Titanium is actually pretty easy to weld. But following procedure is super important.
Argon shield is way more important than more commonly welded metals like carbon, stainless, and aluminum.
Shielding the back side of the puddle is absolutely necessary.
Argon purity is more important as well.
What works on stainless steel will not necessarily yield acceptable results on tig welding titanium.
In this video, I welded a simple butt joint in 1G. But I still ran into a few issues with my shielding gas.
In future videos, I will cover things like using a purge meter, welding inside a chamber, using trailing shields , and more.
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you keep knocking them out of the park; great vid.
This Old Tony, I see you knocking it out of the park too!
As a former quality testing chemist for a gas supply company, I can tell you that they only check for oxygen in "industrial" grade Argon. Move up to 4.8 grade and it's oxygen and moisture. You have to get up to 5.0 or even 5.5 grade to start testing for things like Nitrogen or hydrocarbon impurities. Sometimes industrial grades are filled alongside 5.0 grade in the K and T size (250 and 330CF Argon) cylinders (with the lot tested to that high spec), but your smaller customer owned cylinders will almost always be filled as just industrial, which would explain your experience with the different sizes.
BattleChemist thanks for the Good information
Happy to be a resource for gas knowledge. I spent 7 years there testing up to 5.5 grade spec and AWS specs (plus medical, food, and beverage specs) and was a Quality Assurance Reviewer (signed off to release product to the public) for 5 of those years before moving on to a different career. Not claiming to be an expert, but I've learned so much from this channel I like to give back where I can. 😊
I remember getting quite a few cylinders of industrial argon marked "bad gas" by the customer to find there was around 0.5-1% nitrogen in it from nitrogen tanks being converted to argon (same CGA 580 valve) and not vacuum-purge-vacuum-fill process like you would for a spec gas. But that was "acceptable" due to not testing for it... though, if converting, the tank was 'supposed' to be purged. 😒🤐
What instrumentation did you use for testing the gas? I'm a chemist as well but spent most of my time in grad school working on a STM and AFM and when I finally got into industry I worked on the wet side and never had a chance to test any gases. I enjoy working with instrumentation. Almost had a job at a smoke lab but a stupid recruiter messed it up for me. Oh well, place was awesome as pretty much everything was brand new, which was a far cry from the wet lab were most of the equipment was built in the 80's.
@@Parents_of_Twins It depended on what impurities or percentages we were trying to test. For Total HydroCarbons (THC) we used a flame ionization detector. For trace oxygen, it was electrochemical with potassium hydroxide (KOH) solution in the instrument. For oxygen percentage, it was paramagnetic sensors. For carbon dioxide purity, we used ~30% KOH solution wet chemical that absorbed all the CO2 and the leftover was 'impurity'. For trace CO2 percentage and trace carbon monoxide, we used non-dispersion infrared (NDIR). For trace water, we used electrochemical where an oxide layer on a substrate increased current as water reacted with it. For just about everything else, we used GC-TCD (gas chromatography-thermal conductivity detector) for percent levels and GC-HID (gas chromatography-helium ionization detector) for ppm levels.
I was just going to ask about the grade of argon gas.
I NEVER rented one before and I was making a lot of assumptions.
When we welded titanium we always did it in a "glove box" where all O2 was purged out with argon...welding little titanium grommets for the SR71!
JoJo Mama good point. some parts require welding in a chamber. Some are more efficiently done in a chamber. But there are also plenty of applications where a back purge along with a trailing shield or large cup can get the job done
i've seen the welds on the mighty J58
man those welds look like garbage.
acceptable for the 60s i guess.
3rd Gen Guy ... don't know what '60s has to do with anything,they had destructive and non-destructive testing back then.In my experience a good weld is usually a pretty weld but then again I don't know what you were actually looking at
3rd Gen Guy.....again,when I hear someone say "garbage" especially when it comes to aircraft it really makes me wonder if this person has any idea what he's talking about
I have been welding for fun since I was a kid. I would love to learn to weld Titanium, but after seeing this video, I realize that basically, I know nothing. It seems like a lot to learn before I would even try.
Awesome video sir. I made a series of videos a few months ago showing some issues I was having with stainless, just couldn't quite figure it out. As it turned out, it was the argon. Swapped out the bottle, and solved the issue. I have noticed now since running several more bottles through on a large project i was doing, that the last 10-20% of the bottle it really started to weld like crap, welds grey looking, etc... so good to see you cover this
Ramsey Customs - turbocobra
Agreed, brother, and I love your work, too!
My mind is hungry for knowledge about so many fabrication and manufacturing skills and technologies.
I've been enjoying Jody's content for about nine months, but I've been watching your channel for well over a year.
Also like to give recognition to Texas Barndominiums. Another great channel and talented people.
Tim
I'm paraplegic and use wheelchairs. I recently cracked my foot rest which is made of titanium, and looking inside there haven't been much if any shielding gas as it had been spots of scaling as well. The crack had started in the welding area and I'm pretty sure it's because of that oxidation.
Titanium wheelchair parts? Fuckin minty man.
You ought to be a college welding teacher like bob Moffett, earn from weekly classes and have the videos as extra. Ive learned almost as much from you as i have from my grandfather about welding hands on. I really appreciate the time and effort you put into these videos and your ability to identify problems and explain your reasoning behind them. If the world had more jodis like you, tradesmen would know what and why to do before they get 10-15 years under their belt. Thanks jodi
I've never watched a video from this channel that I haven't learned something from. I took ag mechanics for two yrs in high school when we welded in that class all they did was hand us a mig gun or a stinger and said weld a bead never explained what we were doing wrong or teach how to do any settings. I have always wanted to weld I want to go to welding school still trying to find a good one near me anyways what I'm trying to say is I have learned more from your videos in a yr of watching them than I did in those 2 yrs of high school keep up the great work Jody and thank you
I was a team member TIG welding titanium pacemaker clamshells. We used a glovebox which we would pump down to just a few microns, break the vacuum with argon and pump it down again. Then break the vacuum with argon again to atmospheric pressure. The argon was from a big dewar tank with liquid argon. All the connecting piping was brazed without any flux. Small leaks were tested for by pulling a tight vacuum and waiting overnight.
We discovered that any leaks with argon gas -even under pressure- would cause a backflow situation introducing oxygen and nitrogen into the argon cover gas. Nitrogen was especially bad because the TiN layer was extremely hard and even more corrosion resistant than titanium itself, but contaminating the weld internally. Much of the straw color you see is probably TiN because it looks just like the straw color you see with steel in the HAZ. When properly set up, there is zero color except the silvery color.
You also must be anal about cleanliness. Most of the clamshells were vacuum annealed and put in sealed bags. The hydrogen really cleans the Ti at the molecular level. All this is what we felt we needed with a medical device, but it is impractical in the rest of the real world. But, you must have really clean parts and really pure argon for a quality weld in the real world.
Bill
I always liked welding Titanium Aerospace parts.
never have to brush anything
with perfect purging, it welds super easy
nicely executed on how to tackle titanium. this does give me a way better understanding on how to approach this material. Been welding stainless. inconel and aluminum for 13 years now and cannot wait to add titanium to the resume. Keep the weld craft alive everyone. Stay safe.
Thanks for the tips! I just recently worked in Titanium. I machined and ground a few small pieces at the request of some knife maker friends. It defiantly has its own set of rules. I was told by one of my subscribers that heat and oxygen causes Titanium to oxidize and changes its properties and making it difficult to work.
Steve
Another great video! I noticed finding the right darkness in my hood really made the puddle stand out. Usually run pretty light. Turned it down to 12 and what a difference. Also I like to lengthen the arc and dab right under it, not the front of the puddle. Takes the stickiness out of it. I’ve only welded it once but it was like a million pipe cuts. Reminds me I need a new tig finger sir.
Funny you should mention accidentally welding titanium with stainless filler. Within my first couple of weeks of welding titanium I made this mistake. To a guy with almost nothing but aluminum experience up til then, inconel filler looked pretty similar to titanium. I ended up welding about a quarter way around a piece of .049 wall .625 diameter 6AL when I noticed an almost 'glass breaking' sound. That was a valuable lesson that cost quite a bit of time to correct.
Great videos, sir. Keep it up
I always enjoy your welding videos. I have been a welder for 15 years and I always have to learn and I am very informative thanks for sharing.
I've run into the bad gas problems several times, seems like it didn't show up much welding 316 stainless but trying to weld aluminum with it just didn't work, it made me think the material was contaminated, finally decided it had to be the gas after trying everything else, so I took the cylinder back to my supplier and told them what was going on and there response was "oh you must have gotten one of those bad cylinders of gas" . They said whoever filled them didn't purge the manifold and they had several cylinders returned. Since then I've had 2 others that were bad over about a ten year span.
I'd like to see more about trailing shelids maybe even make one, would be a nice little project
Thanks for being my go-to for all the hidden tips in the industry 🤙
Very educational video. In a 10 min. video there is so much information to learn from. Jody's is a great instructor. Great arc shots to explanation. Thank you Sir.
Would love to see you cover more on ti pipe welding, different ti grades, and more ti welding techniques. Your videos have been an excellent resource for beginners like myself!
keep the Ti vids coming buddy!
I love the burn hole in your t shirt. Looks like some of my Sunday go to meeting shirts. Don't know why I noticed it, but I thought it was funny. Can always pick a welder out of a crowd!
Many years ago doing multi pass welds (MIG) for weld test proceedures, test plates failed x-ray due to porosity. Plates were welded in an area shielded from drafts etc. Welding Engineer had witnessed all welding tests. Turned out to be bad gas, not me, but the gas bottle I had been using. New bottle, welds all good. The little things tnat can make the difference.
A battled with bad argon for months, no one had heard of it….now it all over RUclips.
Wow thanks, the slo-mo was an eye opener for me.
Bad gas was brought up in the shop today as a possible cause of porosity we were experiencing (in alum). What a coincidence that I wanted to see some titanium welding, and gas was an issue! Who says the interweb is a waste of time!
Another great video. This is way beyond any welding I will ever do but it’s super interesting to see the techniques to weld exotic metals. Your the best Jody, keep the videos coming
Jody is any builders dream neighbor.
An old sand blast cabinet works well for a purge box for welding small titanium parts. It takes some getting used to though.
I agree with the gas issues , I worked for ten years in the food industry lots of purge tube welding stainless and one company I worked for only bought from one supplier because their gas was much better quality ! The company I work for now don't see the issue and I have such a bad tim9 with aluminium some days you can see the impurities flashing out when your welding !
I have an s sized tank, same as you had issues with AND I've noticed similar issues this time around. Luckily nothing critical and down to 500psi so won't be long, but I will look into a t size on refill. Thanks again for great content
Beautifully shot video here dude!seriously great stuff here,pure gold😎
Great podcast today with Andrew..
Thanks so much
Your practical tips have been very helpful. Thank you.
Always a great video offering from you Jody, Thank you for what you do. I am a pretty good basic hobby class welder as a result of your teachings. And I do but your products like tig fingers, cup sets and videos for their usefulness and to show my appreciation.
Hey Jody! Would LOVE for you to cover tips and tricks on welding thin wall titanium mitered tubing. I work in a custom fab shop that builds titanium bicycles and would love a short vid on tips, pulse, heat, ect. We use .035” 6-4 Ti tube.
Man i love the slow-mo. Great video as always, thanks. Btw ads don't bother me in moderation. Whatever you have to do to keep on keeping on! Work just bought a Dynasty 210 I am looking forward to playing with!
I'd like to see how you make a gas fixture for welding Titanium please!
Amazing how much Argon quality can vary from cylinder to cylinder.
Please cover a purge monitor
I 100% agree with you on the owner tanks!!!! I ran into that problem a lot!!!!😉👊
Great video. Looking forward to the bicycle frame video!
Thank for your every video
Good video amazing how thin that is, I love tig welding I want to learn more
To avoid overheating and blowing thru on the ends, why not start at both ends and blend the two welds in the center of the piece ? That's the way I was shown and it works pretty good.
Thank you for your time and I’ll buy only from your store!
Within the last two months I was dropped off an owners bottle of crap gas... You could tell the bottle had something reactive like CO² in it too. I'd hit the pedal on a 5 sec preflow to see that yellow straw color on aluminum and the puddle was trying to fall out like sugary brown turds. The arc was the wrong color too and it was a violent arc. I stopped that one to grab a little plate of steel that I've been working on and went porous on the arc initiation with soot and sparks flying from the gas occasionally.
Pull the regulator and there was a ton of oil inside of it?! Told the gas company that bottle was contaminated to hear the rehearsed bit that they give you, the line on their argon pureness is 99.9~ and that each bottle is *"tested."*
So, I buy a regulator that second and say well I'll see. I get home and get a TL210 in to give me some wiggle room without a chiller and crap again! #8 cup pushing 25cfh of argon pureness to look like you'd been welding with tungsten as filler wire! So, I strapped that bottle in the bed of the truck and drove up there that Monday morning with the bottle cracked open the whole way down there to prevent anyone from getting the same shit again and they asked if I figured it out... Yep, your bottle is contaminated!
*"Well, sometimes that does happen..." Well WTF?!*
Great video (explanation) Thank You. Happy 2022 New Year.
I've had bad cylinders several times in the past. Most recent was bad bottle of helium that really screwed my aluminum up until I figured it out. That's when I found out after thirty years of being a welder there's several grades of helium.
loved welding titanium best way to explain it is like welding bubble gum literally a plate of bubble gum and a rod of bubble gum...if you dont stick it straight into that heat, its no bueno
More contaminated videos please! I mean take a little CO², Nitrogen, and any other bottle you got and split your lines with just a trickle of each to show what each form of contamination looks like. Have your argon pass through the welder gas solenoid and splitter upline at the hookup to your torch to allow you to turn on a secondary line to your contamination bottle to see what effect each gas will have on the weld.
I already know contaminated gas will have your arc glow different colors, but I have no clue which gas does what color. It would be handy to identify the contaminates.
Aint1S a
By the way,think you could make some stainless stick,out of position videos.Thinking many people could use the help! Thanks
Would love to see some Ti pipe videos, a la for an exhaust or intake on a car
me too! I need to build a set of headers soon.
it's really no different than welding any other tubing.
you just have to acually be good about torch angles and wire accuracy.
-welded 6al-4v tubing for the F22 and f35.
I would be very interested in seeing how to weld titanium tube, I'm going to be building a turbo based gas turbine and I may make the combustion chamber out of titanium, at this stage it's just going to be a small prototype but if I can get good efficiency figures I may scale it up!
Big beautiful weld cup
Just took a titanium test it’s like running water! Not bad though cool test
It's a good idea to also get the oxide off the filler wire aswell
A trailing cup helps on flat welding.
Yes please have a video showing purge monitor
I produce titanium tube on a cold rolling mill and we have to turn the argon right down compared to stainless, we use a hydrogen argon mixture just for production speed, we use a mixer from the tanks outside but you can get ready mixed argon gas that's 5% hydrogen maybe you should try with a low gas rate...just a thought...
Great Video! Can you show us how to make the purge fixture
weld some copper
- you could do a whole series on welding different metals from the periodic table
Awesome video the best shots and plain information around.
Jody what about using crystal Argon vs normal Argon.I use normal Argon for steel and Crystal Argon for Aluminium.
I have titanium tube and welding both of them directly to aluminum brown
Titanium pipe??? I love seeing the arc shots from titanium pipe. I used to weld some titanium pipe in a chemical plant I used to work at
Jody w Polsce też Cię oglądamy i żeby to filmiki miały tłumaczenie. Dobra robota
Another good tip thanks for inspiration
정말 잘 보고있습니다~~~^^♥♥♥
I am truly amazed at your knowledge and instruction! Titanium is wild! Again, I would like to thank you for posting these top of the line instructional videos! I look forward to many more welding videos!
Nice thanks Jody!
Really amazing welding footage... top-shelf!!! 🇦🇺🤜🏼🤛🏼🍀🍀🍀😎
Very interesting. Thanks Jody!
We all got what we’ve been waiting for haha. Thank you learned a lot I didn’t know
Thanks for another very interesting video. Just love what your doing.
Thanks again.
Hi Jody would you be able to go over a bit about titanium grades and the upsides and downsides of welding them , I hear some grades are more prone to cracking ect.
Love your videos and this one was really interesting watching you explain the challenges with Ti...but I wish you'd invest in a better mic.
Please elaborate on filler rods and what CFM is.
How about something on the purge fixtures? I tried making one out of copper sheet and copper strands inside the perforated box. The one I made didn't do so well when I tried it on the back side of some 16 gauge stainless.
VERY informative video Jody.
Any chance you can get your gas supplier to analyze that bad bottle?
Another good one Jody - rather hope I never have to work on Ti!
Please also explain why you used 1/25" thick titanium. Sounds like it was just begging for problems with your choice of thickness
Man i love your videos... thanks for another great one.
Hey jody, how do you keep such a steady hand in both hands? You don't ever get nervous?
Beautiful. It looked a little like a crack was forming down the middle of the bead as you were moving forward. How do you test that? This video gives me a lot of respect for people who build titanium headers for racing motorcycles.
I believe that's a reflection of his tungsten.
Good stuff jodi
Hey Jody, cool video. Could you make a video detailing starting points for TIG, MIG and stick with values also in metric? I would be interested in gas flow, amps and volts and also travel/wire speed for full penetration.
Great stuff, Happy New Year !
Reminds of welding TIG on copper-nickel piping. Hot and fast!
I'm wandering if laying that tank on its side and rolling it around a bit would have done anything. Might have been worth a try...
Do you have or could you do a video on dating technique. Your vids have helped me so much and I'm starting to get some decent welds on stainless. I'm getting faster and burning my welds less. But I find as I'm dabbing the rod is getting stuck momentarily at the front edge of the puddle. If I add a little more torch angle the rod tends to ball up? Love your work mate.
Love your videos!!
Next question: Where do I find titanium and someone that needs me to weld it for them? And where can I learn to weld bicycle frames? That has been a goal of mine since I learned to weld back in '02.
Great vid , been waiting on some tig welding vids for TI, looking forward for the next vids on this. PS. Wish I had seen that you were in Chatt would have like to meet you, maybe nxt time. Keep the great vids and products coming
Good content Sir more tricks to watch out for love it!!!
If you need some larger aircraft titanium scrap let me know . no charge for the material but you'll have to cover shipping. Turbine older housing, small pieces of pipe
Great video. I’m hoping you can help me with my question I have a titanium clutch can and I need to weld two 1/2” nuts on the inside of the can in order to mount the motor. Is there anything I should be aware of before I have this done and if done properly will the welds be strong enough to hold up to the vibration? I’m not holding you to this, just your educated opinion. Thanks
Another great lesson, thanks,,
Thanks
great video as allways ! Cheers and thankyou for doing this !
Awesome Jody, thanks.
as always -- well done. but as a novice please allow me to ask you -- how can you weld some delicate parts which can not be mounted in a fixture ( a hole in a titanium pipe for example ) 3 foot Pipe and a hole in the middle? . standard steel/alloys may not be a prob, but Titanium / stainless ?? .