[TheForge] Re: TheForge Digest, Vol 34, Issue 69

[craig.schaefer at verizon.net]

So what this is telling us, boys and girls, is that it really doesn't matter.  Each method works and doesn't work in offsetting proportions.
But don't let this stop the debate from going on....

CraigS
Gresham, OR


>From: xlch58 at swbell.net
>Date: 2006/11/29 Wed AM 08:25:23 CST
>To: Sponsored by ABANA <theforge at mailman.qth.net>
>Subject: Re: [TheForge] Re: TheForge Digest, Vol 34, Issue 69

>Lynne Mork wrote:
>>
>>   Order of lighting and then turning off an oxygen/acetylene torch.
>>
>>   Over  40 years ago I was taught in the Utah Technical Collage (Welding
>>   Class)  to turn the acetylene on first,. When shutting down,  turn the
>>   acetylene  off  first.   The oxygen was supposed to clear the chamber.
>>   When  I  retired  6 years ago, I went back to a welding school to make
>>   sure  I  was current with new technology.  I was surprised to find out
>>   they  now  teach you to turn on the acetylene first, and when shutting
>>   down to turn the acetylene off last.
>>
>>   I  checked  in  my old books and found I was correct. The order taught
>>   has changed!
>>
>>   Stump
>>       
>The basic debate seems to be that Oxy off first can result in the mixing 
>chamber and torch internals being subjected to more soot that can foul 
>it and lead to other problems.   Oxy off last can result in the flame 
>being drawn into the mixing chamber and the torch internals being 
>subjected to an acetylene flame. It is easier to blow out the soot on 
>startup then assess damage caused by flame or overheating I am 
>guessing.   I have been doing it acetylene first as I was taught for 
>twenty years or so, and I know I won't change.  For some reason, I just 
>love the scratch of the starter followed by the  pop of the acetylene as 
>it ignites, and after doing it countless times it still puts a stupid 
>grin on my face every time.
>
>Charles
>
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