[TheForge] oxy-propane torch equipment

[terry l. ridder]

hello;

as a follow-up to my previous reply i found my oxy-fuel comparison
chart:

               Table : Fuel Gas Characteristics
Fuel Gas    Maximum Flame  Oxygen to fuel gas Heat distribution
            Temperature °C Ratio (vol)        kJ/m3
                                              Primary    Secondary
Acetylene   3,160          1:5                18,890     35,882
Propane     2,810          4.3:1              10,433     85,325
MAPP        2,927          3.3:1              15,445     56,431
Propylene   2,872          3.7:1              16,000     72,000
Hydrogen    2,834          0.42:1             -          -
Natural Gas 2,770          1.8:1              1,490      35,770


as the above chart shows, oxygen use is going to increase 4.3 times when
using propane instead of acetylene.

fuel gas    flame speed
acetylene    7.4m/s
propane      3.3m/s
mapp         4.69m/s
hydrogen    14.35m/s
natural gas  3.9m/s


On Sat, 14 Aug 2004, John Switzer wrote:

john>
john> I am in the middle of a project using a torch to archive a local heat for
john> an upset on 1" bars.  Using oxy-acetylene  is getting pretty expensive (an
john> acetylene  bottle lasts about 20 upset bars)  I was wondering about
john> switching to oxy-propane.  Does anyone know what additional equipment would
john> be required, besides a propane rosebud tip.  Is it OK to just move my
john> existing acetylene regulator back and forth as the need changes?
john>
john> Thanks
john>
john> John Switzer
john>

-- 
terry l. ridder ><>