[TheForge] Re: RE: Petrogen Torch Yak
debmiller at fuse.net
debmiller at fuse.net
Thu Aug 19 13:01:12 EDT 2004
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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