[TheForge] Re: RE: Petrogen Torch Yak

Thu Aug 19 15:54:23 EDT 2004

To a large extent that is why there was a "YAK" in the subject line.  Mostly
a item of interest to those who work on metal and such.  But to those who my
want to salvage some parts of large scrap etc. the small size of the burning
bars are rather useful.  Now if I could just find a wrought iron bridge or a
bunch of wrought iron pipe to cut up.

As to the air gouge / air lance -- very useful if on a large fab job if
things get welded in the wrong place and you have a lot of weld to remove.
Beats the hell out of grinding.  Not blacksmith or forging but it helps feed
the family of some on this list.

Dave
----- Original Message ----- 
From: "Woolley" <wjande at erols.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Thursday, August 19, 2004 11:43 AM
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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