Thanks very much for your reply Michael. So it might not be a good idea
to PC the Vertical Link, but what about the tie rod levers?
TIA
R. Ashford Little II
www.geocities.com/ralittle2
-----Original Message-----
From: Michael D. Porter [mailto:mporter@zianet.com]
Sent: Saturday, April 06, 2002 4:40 PM
To: R. Ashford Little II
Subject: Re: To PC or not to PC - that is the question!!!
As far as a-arms go, no problem. They are made of a fairly ductile steel
and the 450 deg. or so won't affect hardness, because they aren't
hardened. As for the vertical link, it is hardened and tempered, and one
is getting close to the point where some tempering can occur (typically,
most quench-hardened parts are usually heat-treated to a high degree of
hardness, then tempered to a lower hardness by heating in an oven at
moderately high temperatures, usually 600-800 deg. F for a specified
period of time). Is 450 deg. low enough not to affect the strength of
the part? Myself, I'd rather not take a chance, and would likely paint
it with a hard epoxy.
Nevertheless, I have seen powder-coated springs that seem to work okay.
If the melt temperature is no more than 450 deg. and the time is short,
say fifteen-twenty minutes, that's probably not enough to get the whole
part up to temperature.
When I was making knives, I tempered them in my mother's electric oven.
A quench-hardened medium carbon blade with a Rockwell C of 68 would come
down to about C 53 after an hour or so in a 600 deg. oven.
Not knowing the heat-treat process used on the links, I'm not sure what
the effect of that temperature would be on the part.
Cheers.
--
Michael D. Porter
Roswell, NM (yes, _that_ Roswell)
[mailto:mporter@zianet.com]
The gulf between content and substance continues to widen....
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