Why not quench the hot frame to temper the metal. It could make the frame
stiffer.
----- Original Message -----
From: "Peter Long" <Peter.Long@ecologic.ca>
To: "Patrick J. Horne" <horne@cs.utexas.edu>; "roadster list"
<datsun-roadsters@autox.team.net>
Sent: Thursday, May 16, 2002 9:32 AM
Subject: heat treating in a blast furnace!
> WHOA! Sorry folks - I was using the old 'Alt-248' key sequence to try to
> get the degree sign - guess that trick does not work in this email
> format!!.
>
> I certainly did not mean 4500 degrees Celsius!
>
> OK, just to clarify, and reiterate my point:
>
> 450 degrees Celsius equals 842 degrees Fahrenheit, which is approaching
> the annealing temperature of some alloys, and so get the guidance of a
> metallurgist before doing the galvanizing.
>
> Pete Long
>
> > -----Original Message-----
> > From: Patrick J. Horne [mailto:horne@cs.utexas.edu]
> > Sent: Thursday, May 16, 2002 9:54 AM
> > To: Peter Long
> > Cc: Sel_Aganovic@hettich.com.au; roadster list
> > Subject: Re: was: Chassis rustproofing/frame weight
> >
> >
> > Pete,
> >
> > Take another look at the original post, it indicated 450 C,not 4500 C!
> > A bit of a difference.
> >
> > Peace,
> > Pat
> >
> >
> >
> > - Support Habitat for Humanity, A "hand up", not a "hand out" -
> >
> > Pat Horne, Network Manager, Shop Supervisor, Future planner
> > CS Dept, University of Texas, Austin, Tx. 78712 USA
> > voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
> >
> > On Thu, 16 May 2002, Peter Long wrote:
> >
> > > Sel,
> > >
> > > I would get the opinion of a metallurgist regarding the
> > 4500 C heating
> > > of the frame required to do the galvanizing - 4500 C
> > equates to 8420 F,
> > > which is approaching the annealing temperature of some
> > alloys. Simply
> > > put, that temperature might be enough to alter the temper
> > of the steel
> > > used in the frame, either making it stiffer and more
> > brittle - and more
> > > prone to cracking - or softer and more flexible - making the chassis
> > > less resistant of the torsional forces imposed by the suspension.
> > > Either way is undesirable, depending on extent.
> > >
> > > There may not be a problem with that temperature, but you definitely
> > > want to be sure!
> > >
> > > Pete Long
> > >
> > > > -----Original Message-----
> > > > From: Sel_Aganovic@hettich.com.au
> [mailto:Sel_Aganovic@hettich.com.au]
> > > Sent: Wednesday, May 15, 2002 9:36 PM
> > > To: datsun-roadsters@autox.team.net
> > > Subject: RE: Chassis rustproofing/frame weight
> > >
> > >
> > > Hi Listers,
> > >
> > > I decided to hot dip galvanise my chassis. I found a company
> > > near by that
> > > can accommodate the chassis in one go, and they charge $2.50 per
> kg..
> > >
> > > The questions I have, is how much does the "bare" chassis
> > > weigh ? My guess
> > > is about 150 kg ?!
> > >
> > > Has anyone galvanised their chassis before ?
> > >
> > > Would there be any problems with heat affecting the
> > > frame/welds, since they
> > > use about 450 degrees Centigrade in their baths ?
> > >
> > > Thanks in advance....
> > >
> > > Sel
> > >
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