250F seems really low. Too low a temperature can certainly make a juice taste off.
Titanium wire, vaping and safety
- Thread starter TheotherSteveS
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Just be sure you don't anneal it beyond blue. No dull grey please
Regards
Tony
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Tony,
If you get "Gray" and then clean with an abrasive cleaner like steel wool is it then useable?
So seeing that the sx350j board is about to get Ti control soon I bought this Titanium Round Wire, 50-ft. Coil, 24-Ga., Soft . Is 24g good for an RDA or should I look into 26g as well. I couldn't seem to find another source for it state side.
Yes if you remove the layer completely.
I did notice that after such anneal, the wire seems to get more brittle and snaps easier.
Regards
Tony
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George:
This is going to sound really crazy....but...trust me don't clean the ti wire with steel wool.
Why you ask?
Many years ago in the Apollo program before people flew in the bird a titanium pressure vessel failed because of hydrogen embrittlement. The conditions and all the testing/data available said it was impossible...but it happened.
Turns out that the vessel had a last stage of cleaning with steel wool and a bake immediately after to drive off organics etc.. Our tests finally showed that when there is iron contamination on the surface it's possible to catalyze decomposition of water vapor releasing hydrogen which can diffuse rapidly into titanium and embrittle the surface.
It took weeks and a lot of sweat to figure that one out.
My recommendation is to use sandpaper/kitchen scrubber or some other abrasive..... although since there's not much stress on our coils it probably won't matter if you had a ton of iron on there. With all the other crazy things that happen in vaping though...why not be sure that this one crazy thing can't happen?
Duane
Learning every dayGeorge:
This is going to sound really crazy....but...trust me don't clean the ti wire with steel wool.
Why you ask?
Many years ago in the Apollo program before people flew in the bird a titanium pressure vessel failed because of hydrogen embrittlement. The conditions and all the testing/data available said it was impossible...but it happened.
Turns out that the vessel had a last stage of cleaning with steel wool and a bake immediately after to drive off organics etc.. Our tests finally showed that when there is iron contamination on the surface it's possible to catalyze decomposition of water vapor releasing hydrogen which can diffuse rapidly into titanium and embrittle the surface.
It took weeks and a lot of sweat to figure that one out.
My recommendation is to use sandpaper/kitchen scrubber or some other abrasive..... although since there's not much stress on our coils it probably won't matter if you had a ton of iron on there. With all the other crazy things that happen in vaping though...why not be sure that this one crazy thing can't happen?
Duane
Regards
Tony
Sent from my keyboard through my phone or something like that.
I was going to comment that titanium isn't all that expensive, so if you do happen to "grey" it during annealing, just toss it and start again. It's easy to be safe.
George:
This is going to sound really crazy....but...trust me don't clean the ti wire with steel wool.
Why you ask?
Many years ago in the Apollo program before people flew in the bird a titanium pressure vessel failed because of hydrogen embrittlement. The conditions and all the testing/data available said it was impossible...but it happened.
Turns out that the vessel had a last stage of cleaning with steel wool and a bake immediately after to drive off organics etc.. Our tests finally showed that when there is iron contamination on the surface it's possible to catalyze decomposition of water vapor releasing hydrogen which can diffuse rapidly into titanium and embrittle the surface.
It took weeks and a lot of sweat to figure that one out.
My recommendation is to use sandpaper/kitchen scrubber or some other abrasive..... although since there's not much stress on our coils it probably won't matter if you had a ton of iron on there. With all the other crazy things that happen in vaping though...why not be sure that this one crazy thing can't happen?
Duane
Learning every day
Regards
Tony
Sent from my keyboard through my phone or something like that.
Duane,
Off topic, I worked the Apollo program also, the Engine Manufacturer "Rocketdyne" Southern, Ca.
OK - who am I to argue with the pros. Actually I never got to gray but I did find it necessary to anneal the stuff you sent me Tony. I was able to keep it in the blue range but with that thin a wire you have to really be careful or it lights up like a Xmas tree. I won't torch it if someone can tell me how to wind a coil that doesn't spring open about a third again bigger than the mandrel. Yes - I know use a smaller mandrel.
Awsum, If I think I have even come close to gray I'll pitch it.
Duane,
Off topic, I worked the Apollo program also, the Engine Manufacturer "Rocketdyne" Southern, Ca.
OK - who am I to argue with the pros. Actually I never got to gray but I did find it necessary to anneal the stuff you sent me Tony. I was able to keep it in the blue range but with that thin a wire you have to really be careful or it lights up like a Xmas tree. I won't torch it if someone can tell me how to wind a coil that doesn't spring open about a third again bigger than the mandrel. Yes - I know use a smaller mandrel.
Awsum, If I think I have even come close to gray I'll pitch it.
George
I was at Pratt and Whitney. We didn't work directly on Apollo but NASA asked us to consult on the problem because we had about the most active titanium development programs in the world at the time. If my memory is correct the origin of the vessel was Rocketdyne. I don't remember for sure because our contacts were all through NASA.
I don't think you will have any problem with the annealed wire you're getting. Mine is half hard (no jokes allowed here)...the Unkamen stuff.....and it holds it's shape just fine.
Duane
I tried torching and that was a loser, for me anyway. Now I pulse at low power on a mod and keep in in the unchanged to gold range of oxidation.
At Rocketdyne I worked in the division that analyzed all the test run data. (Are you ready for this) We only used Analog Computers. No one had digital machine with enough horse power to do the job and oh by the way they were Vacuum Tube computers. Hard to believe ain't it.
George
Nope not hard to believe ....I had a work/study thing during the summer when I was in college at Boeing who were heavy into all the development for the low level wing retrofit on the B52. That was all done with a huge analog computer. It looked to me like a huge wall with wires coming out of it everywhere. Actually a scary looking thing. I never saw the backside of the wall but they put in a huge airconditioning plant for that thing so I'm sure it was all vacuum tubes. (I don't even know if there were transistors in those days)
Even more off topic...did you know that those low level wings could bend up so the wing tips touched in flight ...and the wing was still fine. I got offered the chance to go on a high speed low level test flight and I turned it down after seeing the films of what happened to the wings during those flights.
I did go on a air to air refueling flight though because I didn't see any films of that before I said yes. It looks like little birds sailing along on a calm day in photos. IT'S NOT LIKE THAT AT ALL!
Duane
Small world. I had one relative that worked for P&W, engine design for the B52 and another that worked for Rockwell, ablative heat shield for Apollo. The guy that worked at P&W told me a story of how they wanted to route a half inch line from end to end using the computer, but when the keypunch operator entered the data forgot the decimal point and had it do a five inch line. Took two days and about ten carts of printout, if I remember correctly.
I read a post of a fellow who made TI claptons with 36ga kathal as the outer wrap, 36ga TI. He reported that it worked well. I might give that a try
...this thread is full of rocket scientists!! i love it!
The first thing I noticed with Ti was the lack of taste from the wire, it makes a difference.
I'm using 26awg from livipf, it's clean, shiny wire, I run it quickly through the stove gas, it doesn't need to glow red or change color, but the springiness is gone. It makes coil building easy, 8/9 spaced wraps at 2.5mm I.D.
The ohms have been rock solid at 0.43Ω, the temp is on 470°F, at 32watts.
It vapes like a champ.
All the messing about with different temps on the VF DNA40.
The main difference was using the evic VT in Ti mode.
The evic made it easy.
Time to create a Titanos Cult group no?
Regards
Tony
Sent from my keyboard through my phone or something like that.
Regards
Tony
Sent from my keyboard through my phone or something like that.
Once you get the Ti right, it's a great vape.
We'll start seeing lots more mods coming, with Ti mode factored in very soon.
We'll start seeing lots more mods coming, with Ti mode factored in very soon.
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