[TheForge] Re: RE: Petrogen Torch Yak

Darrell darrell at machinemaster.com
Thu Aug 19 19:49:02 EDT 2004 

Air arc is great for removing welds.
Darrell

http://www.machinemaster.com
----- Original Message ----- 
From: <debmiller at fuse.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Thursday, August 19, 2004 10:01 AM
Subject: Re: Re: [TheForge] Re: RE: Petrogen Torch Yak


> It's that Tim Allen, MORE POWER syndrome.....
>
> No reason that I can imagine. Using an air arc is like using a sledge
hammer to drive 10p nail, an oxygen lance is way outside necessity for us
chickens....
>
> But then I have an air arc and have used it.....;-)
>
> Ray Miller
> Cincinnati
>
> >
> > From: Woolley <wjande at erols.com>
> > Date: 2004/08/19 Thu AM 11:43:13 EDT
> > To: Sponsored by ABANA <theforge at mailman.qth.net>
> > Subject: Re: [TheForge] Re: RE: Petrogen Torch Yak
> >
> > Hello,
> >
> > I know I'm way late on this thread but  I was just curious, what would
> > anyone working a small( pick a size) smithy, fab shop, possibly use an
> > air lance for?
> >
> > Regards,
> > Bill Woolley
> >
> >
> >
> > debmiller at fuse.net wrote:
> >
> > >The petrogen is only for cutting. The one of the other emails in this
thread listed another version that could cut and weld.
> > >
> > >Ray Miller
> > >Cincinnati
> > >
> > >
> > >>From: "Rafter Lazy C" <rick at rafterlazyc.com>
> > >>Date: 2004/08/19 Thu AM 07:51:58 EDT
> > >>To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > >>Subject: Re: [TheForge] Re: RE: Petrogen Torch Yak
> > >>
> > >>Hello guys -
> > >>
> > >>    I was wondering whether these gasoline torches would be able to
gas weld
> > >>the same as an oxy-acetylene?  Does anyone have knowledge of this?  I
have
> > >>been thinking about replacing my old torch and the gasoline doesn't
sound
> > >>bad, but I need to be able to weld with my torch also.
> > >>
> > >>Rick Crawford at Rafter Lazy C
> > >>Home of Smoky Forge and Lem the Wonder Mule
> > >>
> > >>----- Original Message ----- 
> > >>From: <debmiller at fuse.net>
> > >>To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > >>Sent: Tuesday, August 17, 2004 6:47 AM
> > >>Subject: [TheForge] Re: RE: Petrogen Torch Yak
> > >>
> > >>
> > >>
> > >>
> > >>>My understanding of the petrogen torch is that it was developed for
the
> > >>>
> > >>>
> > >>Department of Energy for use in the dismantling of nuclear weapons
sites,
> > >>like Fernald, etc. I have not personally used one but had previously
> > >>reviewed their performance for possible purchase by GE for use in
large
> > >>scale demolition projects. We were taking down 50 plus year old
building
> > >>with thick steel plate shielding, 3 foot thick concrete walls that
were
> > >>almost solid rebar, etc.
> > >>
> > >>
> > >>>The cutting speeds are incredible, fuel costs are(were) cheap and the
> > >>>
> > >>>
> > >>cutting capacity is unbelievable. I will see if I can dig up the DOE
site
> > >>that had a pdf file of an extensive study performed comparing the
petrogen
> > >>to acetylene.
> > >>
> > >>
> > >>>As far as safety, gasoline is not flammable, only the vapors. So the
unit
> > >>>
> > >>>
> > >>keeps the fuel in liquid form all the way up to the mixing chamber in
the
> > >>torch head. Then it is vaporized and mixed with O2 and baby does it
burn.
> > >>Gasoline is 125,000 BTU/gallon!!!!
> > >>
> > >>
> > >>>That's a ton of heat!!
> > >>>
> > >>>Ray Miller
> > >>>Cincinnati
> > >>>
> > >>>
> > >>>>From: "Michael H. Murphy" <blacksmith at comcast.net>
> > >>>>Date: 2004/08/16 Mon PM 06:00:05 EDT
> > >>>>To: "'Sponsored by ABANA'" <theforge at mailman.qth.net>
> > >>>>Subject: RE: [TheForge] allstate oxy-propane torch
> > >>>>
> > >>>>After reading through this whole thread (and getting some good info
out
> > >>>>
> > >>>>
> > >>of
> > >>
> > >>
> > >>>>it), I figured this one would really get everyone going.  N.B. I've
> > >>>>
> > >>>>
> > >>never
> > >>
> > >>
> > >>>>tried it, nor talked to anyone who has, so I'm not claiming
anything.
> > >>>>
> > >>>>http://www.petrogen.com/
> > >>>>
> > >>>>Murf
> > >>>>
> > >>>>
> > >>>>
> > >>>>>-----Original Message-----
> > >>>>>From: theforge-bounces at mailman.qth.net [mailto:theforge-
> > >>>>>bounces at mailman.qth.net] On Behalf Of Bruce Freeman
> > >>>>>Sent: Monday, August 16, 2004 3:35 PM
> > >>>>>To: theforge at mailman.qth.net
> > >>>>>Subject: Re: [TheForge] allstate oxy-propane torch
> > >>>>>
> > >>>>>I went to the site and found the table.  I did not find any
> > >>>>>
> > >>>>>
> > >>explanation
> > >>
> > >>
> > >>>>>of what they MEAN by oxygen to fuel gas ratio.  As I and others
have
> > >>>>>pointed out, it certainly is not the stoichiometry of the
respective
> > >>>>>reactions.  It may be "correct", but we have to know what it means
to
> > >>>>>judge that.
> > >>>>>
> > >>>>>Bruce
> > >>>>>NJ
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>>>>"terry l. ridder" <terrylr at blauedonau.com> 8/16/2004 3:16:48 AM
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>hello;
> > >>>>>
> > >>>>>no the table is correct:
> > >>>>>reference for the table are:
> > >>>>>
> > >>>>>twi world centre for materials joining technology
> > >>>>>oxyfuel cutting - process and fuel gases
> > >>>>>http://www.twi.co.uk/j32k/protected/band_3/jk49.html
> > >>>>>
> > >>>>>the usa affiliate is edison welding institute at www.ewi.org
> > >>>>>
> > >>>>>college chemistry book
> > >>>>>
> > >>>>>every one   carbon  atom needs 2 oxygen atoms to form CO2.
> > >>>>>every two hydrogen atoms  need 1 oxygen  atom to form H2O.
> > >>>>>
> > >>>>>propane == C3H8
> > >>>>>oxygen  == O2
> > >>>>>
> > >>>>>C3H8(g) + (5)O2(g) == (3)CO2(g) + (4)H20(g)
> > >>>>>
> > >>>>>the above equation is balanced.
> > >>>>>
> > >>>>>acetylene == C2H2
> > >>>>>oxygen    == O2
> > >>>>>
> > >>>>>C2H2(g) + (2.5)O2(g) = (2)CO2(g) + H2O(g)
> > >>>>>
> > >>>>>the above equation is balanced.
> > >>>>>
> > >>>>>propylene == C3H6
> > >>>>>oxygen    == O2
> > >>>>>
> > >>>>>C3H6(g) + (4.5)O2(g) = (3)CO2(g) + (3)H2O(g)
> > >>>>>
> > >>>>>the above equation is balanced.
> > >>>>>
> > >>>>>On Sun, 15 Aug 2004, James Binnion wrote:
> > >>>>>
> > >>>>>james> Terry your chart is wrong or has a typo.
> > >>>>>james>
> > >>>>>james> Acetylene:
> > >>>>>james> Theoretical Oxygen Ratio,  by  volume 2.5 : 1
> > >>>>>james> Torch Oxygen Ratio, by Volume 1.1 : 1
> > >>>>>james>
> > >>>>>james> Propane:
> > >>>>>james> Theoretical Oxygen Ratio,  by  volume 5 .0: 1
> > >>>>>james> Torch Oxygen Ratio, by Volume  3.5 : 1
> > >>>>>james>
> > >>>>>james> Source for Torch Oxygen Ratio, by Volume
> > >>>>>james> Oxygen Cutting; Meyer; Green et. al.; Welding Handbook, Vol.
2,
> > >>>>>8th
> > >>>>>james> ed., pg. 454,  American Welding Society
> > >>>>>james>
> > >>>>>
> > >>>>>--
> > >>>>>terry l. ridder ><>
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