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Re: Annealing versus tempering

To: Daniel Boughton <danb@wv.MENTORG.COM>, british-cars@autox.team.net
Subject: Re: Annealing versus tempering
From: lupienj@wal.hp.com (John Lupien)
Date: Tue, 26 Oct 93 15:11:19 EDT
> --- Forwarded mail from Bob Lang <LANG@ISIS.MIT.EDU>
> Actually, this is not annealing.  Annealing is heating it red hot and
> slowly cooling it overnight in heavy ashes.  What you did was to attempt
> to temper the copper.
> --- End of forwarded mail from Bob Lang <LANG@ISIS.MIT.EDU>

Annealing does NOT require "overnight cooling in heavy ashes", in fact
a quench bath is sometimes used, depending on the base material and the
desired properties, however dunking in cold water is not going to improve
the fatigue resistance of copper - if anything it will make things worse.


-- 
---
John R. Lupien
lupienj@wal.hp.com


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