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Thread: Welding titanium chairs

  1. #1

    Welding titanium chairs

    I had a weld on my tilite chair that cracked and when I attempted to weld it back together it only laste for about 30minutes before it broke again. Has anyone had any luck with repairing broken welds on their chairs or is it a one time deal meaning that once a weld fails it can never be rewelded?

  2. #2
    Titanium has to be welded in an inert environment, it's a specialized welding process. Welding over previously welded joints usually doesn't work out too well.

  3. #3
    Senior Member Oddity's Avatar
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    You don't have one of these sitting around?

    http://www.dynamicfab.com/titanium-a...lding-chamber/

    "If you only know your side of an issue, you know nothing." -John Stuart Mill, On Liberty

    "Even what those with the greatest reputation for knowing it all claim to understand and defend are but opinions..." -Heraclitus, Fragments

  4. #4
    It can be fixed, you just need to take it to a local metal shop that has the equipment/setup to do it (TIG with argon I think).

  5. #5
    Senior Member pfcs49's Avatar
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    AFAIK titanium should be usually is welded in a gas chamber.
    Unless the state of the art has changed, really good welds of titanium cannot be achieved in the inert gas cone of aTIG UNIT.
    69yo male T12 complete since 1995
    NW NJ

  6. #6
    You can make your own smaller Argon purge box if you want and it will help (instead of a chamber), but a good welder can do it without. I've done aluminum and steel with my TIG machine but it doesn't have all of the pulse adjustments of the more expensive machines. All of my chairs have been aluminum anyhow, so I haven't messed with titanium. You definitely need to keep more gas on it and a longer post flow.

    https://www.youtube.com/watch?v=VkZN8st-BM8
    https://www.youtube.com/watch?v=W51wtS0EKSg

    I will say that I have definitely seen a difference when using a gas lens on aluminum for sure.

  7. #7
    Ya I used my largest cone with a gas lens and built a small enclosure around the joint to attempt to keep the atmosphere as inert as I could without really going all out and making something really difficult. My concern is s ar that once the metal is contaminated it must be removed and replaced so when a weld cracks you only get one chance to fix it before it becomes unweldable. I also considered silver brazing it, but am worried that it might catch on fire and not be able to extinguish it.

  8. #8
    Quote Originally Posted by nauticalmike View Post
    I had a weld on my tilite chair that cracked and when I attempted to weld it back together it only laste for about 30minutes before it broke again. Has anyone had any luck with repairing broken welds on their chairs or is it a one time deal meaning that once a weld fails it can never be rewelded?
    I thought that Tilite frames are replaced by them if they crack, did you try contacting them?

  9. #9
    Quote Originally Posted by Rustyjames View Post
    I thought that Tilite frames are replaced by them if they crack, did you try contacting them?
    No I didn't think that anyone would warranty a 6 year old wheelchair.

  10. #10

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