Titanium end can repair

  1. Ped

    Ped Member

    Messages:
    86
    Stamford, uk
    I've been given this end can to repair. I thought it was stainless but now I've taken out the packing (and feeling how light it is) I realise it's Titanium.

    I've never tig welded Ti before. Any advice? And what filler rod?

    I was going to put copper backing in rather than purge, I don't have purging set up yet.

    IMG_0999.JPG IMG_1001.JPG IMG_1003.JPG IMG_1004.JPG
     
  2. anto44

    anto44 Member

    Messages:
    790
    Location:
    ireland
    Clean it as much as you can, ti doesn't like any sort of contamination. Even soot on the inside will badly effect the weld. Ideally that really does need to be purged to get the best possible weld, ti is very sensitive to oxidation. I got ti filler rods off brad93 on here, he might be able to help you out.
     
  3. whm_fab

    whm_fab Motorsport fabrication

    Messages:
    266
    Location:
    ireland
    are you sure? how light like, are you sure its not 321? im only saying this as the welded on bracket and the seam weld down the middle do not look like ti welds. still could be, but look more like stainless to me. anyway to test it you could hit an inconspicuous area with a dremel, and see are the sparks white = ti.

    secondly, i wouldn't attempt that repair without a purge. no amount of backing will keep a ti weld from going real bad real quick.
    as said, getting the soot out of the crack will be very hard, and this will cause you all sorts of problems.
    i also got a batch of ti rods of brad, excellent quality

    if its ti, and your going to attempt it, the only real process is:
    clean the inside,outside and crack THOROUGHLY. then do it 10 times more.
    purge it.
    get good quality ti rods and a large gas lens
    weld about an inch at a time, maybe a little more depending on your amps/travel speed without a trailing shield.
     
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  4. grim_d

    grim_d Member

    Messages:
    1,076
    Location:
    Scotland - Ayrshire
    From their website racefit only seem to make items from titanium.
     
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  5. Brad93

    Brad93 M J B Engineering

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    4,060
    Location:
    Essex
    It HAS to be purged.

    Sold all my rods, just got my own lot now.
     
  6. Richard.

    Richard. Member

    Messages:
    16,129
    Location:
    Cambridgeshire
    It’s definitely Ti.
    Racefit only make carbon and Ti cans.
     
  7. Ped

    Ped Member

    Messages:
    86
    Stamford, uk
    OK, anyone know where I can get hold of a couple of rods? Or what spec I need to search ebay for?
     
  8. Brad93

    Brad93 M J B Engineering

    Messages:
    4,060
    Location:
    Essex
    Doubt you’ll find any on eBay. You’ll want grade 2 titanium.
     
  9. whm_fab

    whm_fab Motorsport fabrication

    Messages:
    266
    Location:
    ireland
    o/t, if you're ever ordering another large batch @Brad93 in the future, ive still loads for now , hit me up for another split :thumbup:
     
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  10. Ped

    Ped Member

    Messages:
    86
    Stamford, uk
  11. Brad93

    Brad93 M J B Engineering

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    Location:
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  12. Screwdriver

    Screwdriver Member

    Messages:
    3,730
    UK London
    If it was me, I'd get real friendly with those lads above who have welded Ti before and see if you can pop over with it. Maybe score a few rods for future use, make a sizeable contribution to the beer fund and have it welded successfully or under supervision maybe even have a crack at it yourself. I once had a go at welding up a Ti pipe. Can't say it went particularly well on my first and only attempt. Thank goodness for gaffa tape is all I can say. :thumbup:

    (It was a Yoshi end can on my track bike. No harm done.)
     
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  13. Brad93

    Brad93 M J B Engineering

    Messages:
    4,060
    Location:
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    OP you’re welcome to chuck it in the post but I charge £35 an hour for titanium cos it’s a pain

    Can you get to the backside of the crack?
     
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  14. Richard.

    Richard. Member

    Messages:
    16,129
    Location:
    Cambridgeshire
    If your not gonna purge it then leave it alone and send it to one of us. I could do it as well.
     
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  15. Hitch

    Hitch Moderator Staff Member

    Messages:
    11,315
    Somerset
    Bargain!
     
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  16. Brad93

    Brad93 M J B Engineering

    Messages:
    4,060
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    Not sure if serious?
     
  17. Ped

    Ped Member

    Messages:
    86
    Stamford, uk
    I think I’ll give it a go (with purging). Good or bad I’ll show the results.
     
  18. Brad93

    Brad93 M J B Engineering

    Messages:
    4,060
    Location:
    Essex
    Just be aware that if you muck it up the entire weld area is scrap. You’d have to cut out and replace or patch over it.
     
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  19. Richard.

    Richard. Member

    Messages:
    16,129
    Location:
    Cambridgeshire
    I’d sooner scrap the can if it got to that stage. Look awful with a plate patched on it.
     
  20. Ped

    Ped Member

    Messages:
    86
    Stamford, uk
    The owner is happy to give it a go so I am too. He’s aware it might be scrap at the end of it.
     
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