Can 98% argon, 2% O2 be used in TIG welding
Ignoramus31295
Ned Simmons
<ignoram...@NOSPAM.31295.invalid> wrote:
>need to know asap
I suppose it might sort of work on steel and stainless steel, but I'll
bet the tungsten will erode very quickly. No idea how much weld
quality will suffer, outside of inevitably being ugly. I'm quite sure
it won't work at all on aluminum.
--
Ned Simmons
Ernie Leimkuhler
Ignoramus31295 <ignoram...@NOSPAM.31295.invalid> wrote:
> need to know asap
There is no commercial gas mix of 98% Argon / 2% CO2 that I have ever
heard of.
I think you meant 2% Oxygen.
98/2 Argon Oxygen is a very hot spray-process MIG gas for steel.
The oxygen content would likely eat your tungsten.
Ignoramus31295
> In article <ZcmdncFmZ_LQz3_U...@giganews.com>,
> Ignoramus31295 <ignoram...@NOSPAM.31295.invalid> wrote:
>
>> need to know asap
>
> There is no commercial gas mix of 98% Argon / 2% CO2 that I have
> ever heard of. I think you meant 2% Oxygen.
That's what I said, O2.
What just happened is a very educational story in many ways.
I responded to an ad in Craigslist for a gas fired blacksmith
forge. Went there, liked the forge, knocked the price down a bit,
agreed on price and bought a few more things.
The owner also offered me a 251 cf tank of Argon/O2 mix for $50, which
I decided not to buy right away and posted a question about it here
when I went on my way.
An hour later, while still driving, I got an email from the seller
stating that he could not locate the money that I paid for the
forge. I looked in my pocket and there it was, neatly folded.
So I caled, came back and gave him the money. He was understandably
very happy, as he probably had all kinds of bad thoughts and felt
badly.
So, he gave me the bottle of that mix for free, and who I was to say
no.that was10 minutes ago.
This, by the way -- forgetting to pay -- happened to me before.
i
BobH
> So, he gave me the bottle of that mix for free, and who I was to say
> no.that was10 minutes ago.
>
As long as it is an owner bottle, you should be able to trade it for a
similar sized bottl with the gas of your choice (after paying for the
fill). I have turned in straight argon bottles and gotten C25 or
nitrogen, depending on what I needed at the time. A bottle is a bottle
as long as it is an owner bottle.
Ignoramus31295
He said it was an owner bottle. I tend to believe him. If it is really
the case, I will return the one that I am currently leasing, to get
back my deposit.
i
ATP*
"Ernie Leimkuhler" <er...@stagesmith.com> wrote in message
news:120420091405250392%er...@stagesmith.com...
Maybe he's thinking 92% Argon/8% CO2 for spray, or C8.
Ignoramus31295
I was thinking exactly what I posted (see subject of this thread), 98%
argon, 2% O2 (oxygen).
i
Pittman Pirate
"Ignoramus31295" <ignoram...@NOSPAM.31295.invalid> wrote
> This, by the way -- forgetting to pay -- happened to me before.
>
> i
I did that one time on a lawnmower at a yard sale. Got to talking to the
guy about the good old days, and we both worked at the same joints and knew
a lot of the same people. I saw it after I drove off, and went back and
paid him. He said thanks, and he was glad some honest people were left.
Pittman Pirate
"Ignoramus31295" <ignoram...@NOSPAM.31295.invalid> wrote in message
news:a9ydneaYqvRW9n_U...@giganews.com...
Look at the collar for a name cast in there. If the shoulder just comes up
to the valve opening, it's an owner tank. If there's a name stamped in cast
iron, it belongs to someone, and you may have difficulty or impossibility to
trade it out depending on where you live and who you deal with.
Pittman Pirate
"Ignoramus31295" <ignoram...@NOSPAM.31295.invalid> wrote
> I was thinking exactly what I posted (see subject of this thread), 98%
> argon, 2% O2 (oxygen).
>
> i
Yes, but are you sure, Iggy? A long time passes from when you look at it
and then come in and type it. What's that, you wrote it down? Well, how
can you be sure of that? Pencils make mistakes, you know.
BTW, I think you got it right.
ATP*
"Ignoramus31295" <ignoram...@NOSPAM.31295.invalid> wrote in message
http://www.gts-welco.com/Gases_SpecEq/pdf_documents/ArgoBlendAluminum.pdf
102 is a two-part gas mixture of argon and oxygen
which improves arc stability and provides a more
fluid weld pool. The filler metal transfer
with argon / oxygen helps reduce spatter
levels, and the fluid weld pool permits
higher travel speeds.
Ignoramus31295
Nutz
"Ignoramus31295" <ignoram...@NOSPAM.31295.invalid> wrote in message
Obviously Photoshopped ! : ~)
Grant Erwin
high pressure cylinder (plus paying for the gas). Oxygen, argon, any of the
argon/CO2 blends, helium, nitrogen; all use high pressure cylinders. It's
a great score and obviously an owner cylinder.
Grant
Ignoramus19167
OK, thanks. Airco is called Airgas now, right?
It does have AIRCO on the collar, it is on the other side from the
label. So, while I also think that it is an owner cylinder, I am not
sure that it is fully a given. I am not losing sleep over this
question as I do believe that guy and I did not pay for the tank,
anyway.
i
Calif Bill
"Ignoramus19167" <ignoram...@NOSPAM.19167.invalid> wrote in message
news:K_idnQmyWvTHyH7U...@giganews.com...
It may cost you some to trade the tank, as it is most likely out of date.
But probably a lot less than a new tank costs.
et...@whidbey.com
Greetings Ernie,
A couple weeks ago My son needed to weld some SS tubing. He wanted to
use my SP125+ mig so i set it up with some 309 SS wire. The book says
to use 98 Ar/2 O2 mix. All I have is straight argon and C25 mix. So he
used the straight argon. It seemed to weld OK. I tried welding some
sheet first and was able to get sound welds. But the welds do not have
the same appearance as tig welds. My tig SS welds don't oxidize on the
bead, the tig welds tended to get a black oxide coat, similar to what
happens on the unsheilded side a SS sheet when welded. Not sugary, but
black and tenacious. Not consistently either. I'm wondering if maybe
the SS welds need more gas flow than regular steel mig.
Thanks,
Eric
Pittman Pirate
"Ignoramus19167" <ignoram...@NOSPAM.19167.invalid> wrote in message
news:K_idnQmyWvTHyH7U...@giganews.com...
You will know when you go to get it filled. Local suppliers DO have some
leeway when it comes to these situations, because they don't want to lose a
customer over an issue of a tank that the person more than likely came by
legally, or at least with no intent involved, even if they did posess
questionable goods. I am in exactly that position right now. I have an 02
tank that has yet to be settled upon. I have a new supplier who said,
"bring if in, and I'll look at it, and I'll see what I can do." Much better
than the sassy, "No way, NO how" of the other guys. Who, BTW, I spent
$3,000 with in 2008. If this other supplier takes this tank and does me
right, I'm going back to that supplier, make sure I'm talking to someone in
charge, and explain why I won't be spending $3 with them in 2009.
It ain't over till it's over, Ig, and it ain't over yet. Attitude means a
lot, and if you're polite, and just let them know that you got this thing
legal, they may take care of you. (Be sure to explain that you will never
forget this, and will be coming back for supplies in the future.) These
clowns have a lot more leeway than they let on.
Pittman Pirate
<et...@whidbey.com> wrote in message
news:49e3aa3d....@news.whidbey.net...
Maybe it's just me, or the equipment I was using, but I never got MIG to do
decent SS.
Martin H. Eastburn
top of the tank.
Martin
Ernie Leimkuhler
wrote:
MIG on stainless is a tricky proposition.
Because SS is a worse conductor than steel the wire can't carry as much
current, so you have to increase your voltage.
C25 will work as a shielding gas but you will get a heavy layer of
oxides of nickel and chromium.
98/2 is better.
The increased heat yields a cleaner weld.
The best I have used is an Argon/CO2/Helium tri-mix.
The only thing I have found that will completely remove the SS MIG
oxides is UTP's weld pickle past.
et...@whidbey.com
I guess it's time for me to learn how to do god mig SS then.
ERS
Calif Bill
<et...@whidbey.com> wrote in message
news:49e609b2....@news.whidbey.net...
Stick seems to do better SS than mig.
Steve W.
Talk to the guys at 4 Guys Fire Equipment about welding stainless. They
build complete fire engines out of stainless.
--
Steve W.
ser...@microfusionwelding.com
31295.invalid> wrote:
> need to know asap
We use a mixture of 98% argon 2% hydrogen. We,ve done quite a bit of
experimentation on shielding gases. This one has definately proved
succesful. For the type of work we do argon is pure argon is one of
the worst.
contact me if you have any questions.
Thanks
Dan