[TheForge] allstate oxy-propane torch

[terry l. ridder]

hello;

On Tue, 17 Aug 2004, Dave Brown wrote:

terrylr> At 02:37 08/17/04, you wrote:
terrylr> hello;
terrylr>
terrylr> the chemistry is set by the elements themselves there is little that
terrylr> anyone can do to change that.

dave_brown> 
dave_brown> Terry,
dave_brown> 
dave_brown> The bottom line is that although oxy/propane doubles the expense of the 
dave_brown> oxygen, the savings in fuel cost (acet vs propane) more than 
dave_brown> compensates.  In the end, oxy/propane is cheaper than oxy/acet for cutting 
dave_brown> or general heating or brazing.  So, although you say that you can't argue 
dave_brown> with the chemistry, neither can you argue with the economics.  Remember, 
dave_brown> the additional oxygen consumption is in the burning only for general 
dave_brown> heating and brazing.  When it comes to cutting ... well, it's oxygen that 
dave_brown> does the cutting, not the flame.  So, don't get hung up on the chemistry, 
dave_brown> it's only one small piece of the puzzle.
dave_brown> 
dave_brown> Dave Brown
dave_brown> 

i agree there are many other variable that come into play when deciding
on which fuel gas to use. the point i was attempting to make was that
all-states web page is less than clear on the oxygen consumption of
their oxy-propane torch.

concerning cutting i agree the oxygen does the cutting the oxy-fuel is
for pre-heating only. after reading the information on the inner and
outer flames of acetylene and propane. it would appear that cutting with
propane would have a larger pre-heated zone. this may or may not be what
is desired.

clearly, using any oxy-propane torch for heating 1inch square bar for
upsetting is cost effective over oxy-acetylene for many reasons. the
amount of btus available in the outer flame of propane compared to
acetylene is a big factor. the  lower cost of propane compared to
acetylene is other factor.


-- 
terry l. ridder ><>