Eugene Leitl wrote:
> Michael S. Lorrey writes:
>
> > the wax, and pour titanium via the lost wax method. Oh well.....
>
> Titanium is usually sintered, and then forged. Liquid titanium is damn
> reactive (iirc Ti filings tend to ignite during machining, and merrily
> burn in nitrogen) and its mechanical properties are dramatically
> degraded by traces of contamination, so I wonder what you wanted to
> use for material for your cast.
>
> I would rather use NC metal mill to subtract from a massive forged
> piece, but tool head bulk will limit shape repertoire. </O.D.onL.F.P>
The Titanium golf club driver heads made for Callaway by Ruger (the Big Bertha
and Super Big Bertha) are investment cast. It might be an alloy they use, but
its not sintered. They've found the sintered ones tend to shatter after much
use...its also hard to make them hollow using the sintering/forging process,
while the lost wax method is just fine.
-- TANSTAAFL!!!Michael S. Lorrey Director, Grafton County Fish & Game Assoc. http://www.lorrey.com/gcfga/ Member, Extropy Institute http://www.extropy.org Member, National Rifle Association http://www.nra.org "Live Free or Die, Death is not the Worst of Evils." - General John Stark
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