[TheForge] Dont put your tongue on a frozen anvil

[Grover Richardson]

Accumulative stress.  Understand.  The bottom line is that everything will
break eventually<G>.

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Chris Kilpatrick
Sent: Wednesday, September 29, 2004 1:45 PM
To: Sponsored by ABANA
Subject: RE: [TheForge] Dont put your tongue on a frozen anvil


Remember that we are talking about stress over time at colder temps.  the
nature of steel is that it work hardens due to repeated stress, then stress
risers or fractures appear microscopically, then failure happens rather
swiftly.  Once the steel has absorbed all the stres it can take, it is
brittle.  Now, if we start by putting the steel in a more brittle state,
even if it is only slightly more brittle (which is not the case) we shorten
the time needed to produce stress fractures.  Failure is a function of
amount of stress and how many times the steel has been stressed.

-Chris K.
----- Original Message -----
From: "Grover Richardson" <grover.richardson at gtri.gatech.edu>
Date: Wed, 29 Sep 2004 12:31:51 -0400
To: "'Sponsored by ABANA'" <theforge at mailman.qth.net>
Subject: RE: [TheForge] Dont put your tongue on a frozen anvil

> I understand the concept.  But I wonder if an anvil a mere 80 degrees 
> cooler will break?  I'm not a metalurgist (though I suspect there are 
> those lurking here that are<G>.  But if an additional 80 degrees will 
> cause it to break, I wonder if it was correctly constructed 
> originally????  We tend to use freezing as a step function in the 
> world, and for us it is.  But to metal, it appears to only be just 
> another degree colder<G>.
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net 
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of 
> xlch58 at swbell.net
> Sent: Wednesday, September 29, 2004 10:16 AM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] FW: [The_Anvil] Dont put your tongue on a frozen
> anvil
> 
> 
> I had always heard the issue was potential damage to the anvil, not just 
> losing heat in the work.   I tend to preheat my anvil even though it 
> doesn't get that cold in Texas.  Easy enough to do.
> 
> Charles
> 
> Grover Richardson wrote:
> 
> >So, a cold anvil is only .04494382 colder than the warm anvil.  That 
> >is
> >about 4.5%.  Measurable, but not metal threatning<G>.  Yes, it will 
> >have a (possibly noticeable) effect.
> >
> >  
> >
> 
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It is I who formed the blacksmith, 
who fans the flame into a fire and
fashions a weapon fit for it's work.

-- 
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