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All my supplier's acetylene tanks burn orange


#1

Hi all,

Last fall I exchanged an acetylene tank for a refilled one. The
flame burned orange and didn’t seem to be as hot as the blue flame in
older tanks.

Finally got around to exchanging this tank in April 2016. It also
burned orange, cooler flame.

My closest Goss torch supplier worked patiently with me over the
phone to double check every component of my Goss torch equipment -
even sent me replacement filters and one replacement orifice for my
most-used torch tip. All seems to be in order with my equipment and
the torch flame was still orange.

I took this tank back to my local welding shop yesterday. The shop
tested my tank with their torch (orange flame). Then the shop tested
every single available refilled tank in their shop with their torch
equipment. All tanks burned orange.

My local shop then tested two of their own older tanks, which they
keep on hand to make minor repairs for customers. Both of these tanks
burned with a blue flame.

My question to the Ganoksin team - has some standard for acetylene
gas changed? Do you think the shop’s gas supplier might have changed
some aspect of generating their gas, or might inadvertently have
introduced a contaminant into their current gas supply?

Thanks in advance,
Mary Alexander


#2

Glad you brought this up Mary. I too have noticed that my newly
delivered acetylene tank seems to be burning more orange than
previously. However, it has not posed a problem with either
soldering, melting metal for casting, or for annealing. so I have not
been too concerned about it. However, I am interested in learning
moreabout this. Alma


#3

Acetylene needs air or oxygen to be used for soldering or welding.

Acetylene always burns like that If it’s not mixed. It also will make
soot that floats in the air. It’s a dirty gas. I got propane at home
now and at work. Cleaner gas, not quite as hot. SD


#4

Ive used oxy/propane myself. cannot speak for acetylene personally.

Aaron


#5

I beleive the poster of this thread was talking about running the
Acetylenetank on the gas +air torch and still burning yellow-ish
which I noticed i been getting that too on my great smith vector air
torch, worse on some torch tips then others, no matter how much I
cleaned and soniced the Torch tips, still came out yellowish. this is
not the same yellow when you start the torch on an Oxy- acetylene,
the flame is all dark yellow with Soot coming off of. there seems to
be a difference between the gas that was 15 years agoand now for
sure.

Hratch.


#6
Last fall I exchanged an acetylene tank for a refilled one. The
flame burned orange and didn't seem to be as hot as the blue flame
in older tanks. 

Remembering back to college qualitative analysis, the orange flame
sounds like there’s a sodium compound involved. Not a bad or unusual
thing, sodium is everywhere in trace amounts. However, that doesn’t
explain the temperature difference. Are you certain it’s cooler?
There are a lot of variables.

Al Balmer


#7

I believe it may be the case, I had expienced that cooler flame
effect, but disregarded, but experimenting with the different tips
did seem to provethe differences of temp from the yellowish flame to
the blue. the other point on this effect is noticed the light
yellowish flame was getting the metal to be soldered dirtier faster.
just an observation in studio and not a lab. Hratch

Atelier Hratch


#8

This has happened to me 3 out of 4 tanks in the past 2
years. The gas supply argued with me a lot, but I took my tank back and my regulator and torch. They tried to blame it on everything else, until they used a new reg and torch and didn’t have any luck until they changed tanks


#9

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ehoward@gas-tec.com
Office 1-800-451-8294
Cell 716-490-1766

    jmdw47 
  December 14  

This has happened to me 3 out of 4 tanks in the past 2
years. The gas supply argued with me a lot, but I took my tank back and my regulator and torch. They tried to blame it on everything else, until they used a new reg and torch and didn’t have any luck until they changed tanks