now we're talking hard-core metallurgy! One problem would be
determining the chemistry of the steel in the frame - if you knew that,
you could do great things with torsional and bending rigidity by way of
heat treating to a given strength, but probably not with galvanizing, as
the heat treating temperature would possibly be higher than the 450
degrees C to get the zinc molten....but that's not likely where Sel was
headed anyway!
> -----Original Message-----
> From: Andy Cost [mailto:andycost@att.net]
> Sent: Thursday, May 16, 2002 10:48 AM
> To: datsun-roadsters@autox.team.net
> Subject: Re: heat treating in a blast furnace!
>
>
> 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
> > > >
> > > > /// datsun-roadsters@autox.team.net mailing list
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