[TheForge] allstate oxy-propane torch

[James Binnion]

Hi Terry,

I found that site as well but it is the only one that I found that 
has the ratio of 1:5 that you posted  for Acetylene Oxygen all the 
others list a ratio of 1.1:1 for actual torch usage or the 
theoretical of  ratio of 2.5 : 1 .  And your chemistry data also 
agrees with the 2.5:1 info not the 1:5 listed in the chart So I 
belive that they have a typo in their chart.

Regards,

Jim


>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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-- 
Jim Binnion

James Binnion Metal Arts
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