[TheForge] New Gas Forge

Fri Apr 23 14:29:01 2004

How does the Plistix hold up against flux?

One way to get top drawer protection against flux corrosion is a sheet
of niobium.  Beware this is very costly, but a sheet of 20ga should
last longer than any human being will.  Another way is to use Haynes
230, a high temp alloy.  Less $$ than Nb, but also not nearly as 
effective, though good to, IIRC, 2350*F.  Nb melts at 4474*F and is
therefore a refractory metal like Pt, Ir, Ru, Rh, W, etc.

Larry Zoeller wrote:
> 
> Michael,
> The bottom of the forge is coated with the Plistix 900F this will prevent
> the bottom from being damaged from the direct flames.  The Plistix can take
> the high heat with no problem.
> I put the burners in the top because I used a NC forge for awhile and I
> liked the way it heated the metal, but it did scale the metal a lot.  The
> side arm burns have chokes so I should be able to help prevent from scaling
> so much.
> 
> Larry Zoeller
> [email protected]
> Why Wait?  Move to EarthLink.
> 
> > [Original Message]
> > From: Michael H. Murphy <[email protected]>
> > To: <[email protected]>
> > Date: 4/23/2004 5:22:12 AM
> > Subject: RE: [TheForge] New Gas Forge
> >
> > That's a good-looking piece of gear.  I have a couple of questions on it.
> >
> > A friend has a commercial-built forge with the burners in the middle of
> the
> > top like yours, and he's getting some pretty serious erosion of the
> > refractory material where the flame hits the bottom.  Are you seeing
> > anything like that yet?  It might take a number of hours of use for this
> to
> > show.
> >
> > Is there a specific design reason to put the burners on top?  You said you
> > had to bend the tubes to prevent heat from going up to the burners.  Mine
> > (Larry Zoeller-type sidearm burners) are set horizontally into the side to
> > avoid that problem.   They're on a round forge, which may change the
> design
> > needs.
> >
> > Does it weld well?  What kind of pressure do you need to get welding heat
> > out of it?
> >
> > Thanks for sharing; I got a couple of ideas from it already.
> >
> > Mike Murphy
> >
> > -----Original Message-----
> > From: [email protected]
> [mailto:[email protected]]
> > On Behalf Of Larry Zoeller
> > Sent: Thursday, April 22, 2004 9:25 PM
> > To: theforge
> > Subject: [TheForge] New Gas Forge
> >
> > To All,
> > I just finished building a new atmospheric gas forge using square tubing
> > instead of round pipe.  It has several new improvements to it.  Check it
> > out and let me know what you think.  The forge can be found at the
> > following url.
> > http://www.geocities.com/zoellerforge/squareforge.html
> >
> >
> > Larry Zoeller
> > [email protected]
> > Why Wait? Move to EarthLink.
> >
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