[TheForge] going for gas

Mon Feb 10 13:47:00 2003

Chuck, gotta website?
 Chuck Robinson <[email protected]> wrote:Hey Ralph,
I make and use blown gas forges for most of my work. The difference in heat
out put for a blown forge with a good high pressure fan over atmospheric
burner forges is quite significant.
The only downside is increased scale formation at max heat output.
When I'm heat treating my bladesmithing anvils, the faster that the anvil
head can be brought above critical temperature the better, in order to
confine the heat to the top 5 inches of the billet's surface.
My heat treating furnace does this in 15 minutes from a cold start.
To minimize the scale formation, it helps a lot to toss a few fist sized
chunks of metrological grade coke into the forge.
The coke scavenges up any excess oxygen, produces extra heat and leaves
almost no residue behind.
Chuck

----- Original Message -----
From: "Ralph Sproul" 

To: 
Sent: Sunday, February 09, 2003 7:19 AM
Subject: Re: [TheForge] going for gas

> Andy, No, I don't get much more scale with gas than
coal.......when
> I had that problem, I redrilled the gas jet to elliminate the problem. A
> slightly carberizing flame will yield less scale.......as in a coal fire.
> To much air is what yields scale.
>
> Ralph
>
>
> ----- Original Message -----
> From: "Gladish Family" 
> To: 
> Sent: Saturday, February 08, 2003 11:58 PM
> Subject: RE: [TheForge] going for gas
>
>
> > > The only time I light my coal forge is when I have some forge
> > > welding that needs done. Other than that - I use propane all the
> > > time. I
> > > love the ability to work 6-8 pieces at the same time. Never
> > > could get away
> > > with that in a coal fire........or at least I couldn't.
> > >
> >
> > Don't you get a lot more scale than you would with coal?
> > When you use coal it's sometimes a choice between burning your other
> pieces
> > or going slow- but I really like the surface that I get with coal. For a
> > piece that I want to be really nice, or if it's practical to heat
shorter
> > areas, there's very little cleanup when the forging's done if I pay
> > attention and finish hammer down into black heat.
> > I only seem to use gas when I need a long heat.
> > Andy G.
> >
> > _______________________________________________
> > http://mailman.qth.net/mailman/listinfo/theforge
> > theforge mail list group photo site is
> > http://www.photoaccess.com
> > Login: [email protected]
> > password: anvil
> > ___________
> >
> >
>
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login: [email protected]
> password: anvil
> ___________
>
>

_______________________________________________
http://mailman.qth.net/mailman/listinfo/theforge
theforge mail list group photo site is
http://www.photoaccess.com
Login: [email protected]
password: anvil
___________

---------------------------------
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now

--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---