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RE: annealing copper
Subject: RE: annealing copper
Date: Thu, 01 May 1997 20:01:27 GMT
From: robert.michaels-at-online.sme-dot-org (Robert Michaels)
Organization: Society of Manufacturing Engineers
To: tesla-at-pupman-dot-com
T>aaargh, I can't stand it. Let me post this once more and then I'll
T>quit. You
T>do not have to let copper cool slowly after annealing it, it makes no
T>difference. prove this yourself. Workharden a piece of copper wire -
[ ... ]
Amen, brother, amen.
I worry about people working with high voltage apparatus
who are unclear on this concept: Iron and Copper are not
the same material. In the matter of annealing they work
oppositely.
Iron/Steel - To HARDEN, heat to bright red and =quench
rapidly=.
Copper - To SOFTEN, do likewise.
T>smack
T>it with a hammer or bend it a lot or something, Cut it in half so you
T>have 2
T>work hardened pieces. Heat them both up to cherry red - use the stove
T>if you
T>wish. Drop one immediately into water while it is cherry red. Let
the
T>other
T>one cool as slowly as you care. When they are both cool, flex each
one
T>and
T>see if you can tell the difference.
[ ... ]
AAAaaarrrgghhh!!!
Will you =please= limit your line-lengths to 70 columns,
more or less? Else, if you are using "Navigator" for
e-mail, refrain from hitting <RETURN> unless you are
starting a new paragraph.
We =all= thank you.
An old softie, in -
Detroit, USA
Robert Michaels