[TheForge] Heat treat for Titanium

[schade at acegroup.cc]

On Sep 5, 2006, at 2:30 PM, Cameron Stoker wrote:

> Here's my little bit of Ti related info:
>
> I think the most common forms of Ti encountered are either cp 
> (chemically pure)

> The blacksmitherly approach to keeping hydrogen & oxygen away from the 
> surface is to drown the thing in molten borax.

>  most of it will be there for a long time. Usually easiest to just 
> grind it all off.

> The borax coating keeps the elephant-skin like texture from forming. 
> This oxide layer is amazingly hard and cracks in it's surface will 
> start stress risers in the parent metal. I'd also bet that the oxide 
> is strong enough to keep the flint from scraping any base metal 
> slivers off.
>






seems like a lot of bother. I have forged small amounts
of 3/4" round titainium. I never had a problem with "elephant skin".
Also I think the "cp" means "commercially pure" but I really don't
know what that means.

Bob