[neilep (OP)]

Dear Sirs/Madams/Others!

I know Titanium is an industrial metal that is very hard. But why is is that if a ring is made from it that if is breaks it can NOT be fixed ?...if It's split or chipped it can not be repaired...whysthatthen ?

Thanks

neil

[eric l]

All I know is that titanium is very difficult to weld.  See also the quote from Wikipedia (http://en.wikipedia.org/wiki/Titanium) :

Titanium burns when heated in air 610 °C (1,130 °F) or higher, forming titanium dioxide.[6] It is also one of the few elements that burns in pure nitrogen gas (it burns at 800 °C or 1,472 °F and forms titanium nitride, which causes embrittlement).

(The melting point is much higher than 610°C or 800°C)
Still, if they can build bicycle frames from titanium, it must be somehow possible to fix a broken ring (at a cost).

[neilep (OP)]

All I know is that titanium is very difficult to weld.  See also the quote from Wikipedia (http://en.wikipedia.org/wiki/Titanium) :

Titanium burns when heated in air 610 °C (1,130 °F) or higher, forming titanium dioxide.[6] It is also one of the few elements that burns in pure nitrogen gas (it burns at 800 °C or 1,472 °F and forms titanium nitride, which causes embrittlement).

(The melting point is much higher than 610°C or 800°C)
Still, if they can build bicycle frames from titanium, it must be somehow possible to fix a broken ring (at a cost).

Yes....yes I am sure you are right Mr Eric Sir. THANK YOU for your answer.

I imagine then that although the ability is there to create with Titanium, perhaps, specifically as something as small as a ring, that it's not cost effective.

Thanks Mr Eric

[lightarrow]

I know Titanium is an industrial metal that is very hard. But why is is that if a ring is made from it that if is breaks it can NOT be fixed ?...if It's split or chipped it can not be repaired...whysthatthen ?

Titanium welding requires particular technics, but not so complicated or expensive.

Arc welding:
TIG (tungsten inert gas)
MIG (metal inert gas)
PAW (plasma arc welding)

Power Beam Processes:
laser or electrons beam

Resistance welding

Friction Welding

Diffusion

Forgering

Soldering

...

[neilep (OP)]

I know Titanium is an industrial metal that is very hard. But why is is that if a ring is made from it that if is breaks it can NOT be fixed ?...if It's split or chipped it can not be repaired...whysthatthen ?

Titanium welding requires particular technics, but not so complicated or expensive.

Arc welding:
TIG (tungsten inert gas)
MIG (metal inert gas)
PAW (plasma arc welding)

Power Beam Processes:
laser or electrons beam

Resistance welding

Friction Welding

Diffusion

Forgering

Soldering

...

Grazie Mr Lightarrow Sir.


Hmmm..does seem a lot of work involved just to fix a little ring !

So, it's not as simple as just melting the thing down again?

[DrDick]

But that's not so much 'fixing' the ring as completely remaking it.  I think that's the main problem.  Any attempt at fixing the ring is likely to destroy the ring.

Dick