Power of the PT

[cqaigy2]

I think it is one of the learning lessons all welders go through...
e.g. Stargon CS for carbon steel (contains O2)
Stargon SS for Stainless Steel (contains N2)

All the best,

Peter

I love this forum, there's so many REALLY Smart people on here.

Is that Stargon CS (O2 or CO2)?
I was thinking that the gases were primarily to shield the O2 from the weld while it was hot , hmm seems like i hear hydrogens a problem too i guess the O2 might scavenge that too.

 

[ponytug]

I can't speak for others, but I am curious and let my fingers do the walking...

The great thing about having a larger market is that there is room for enhanced products.
First there was argon shielding gas, which blanketed the weld, but wasn't great at keeping an arc. Then argon with carbon dioxide, came along and it was easier to hold an arc. Then people noticed that if you put a little oxygen in it, you could control the amount of Carbon left in the Steel weld. (Hence the CS)

There are a large number of mixes to get the best weld for the given conditions. I find the choices rather mesmerizing, rather like a deer in the headlights, but it makes for interesting reading, and it makes me realize how much I don't know.

Praxair have pages and pages of great information;
Praxair Shielding Gases
STARGON, STARGON CS, and STARGON SS are all trademarks of Praxair.

I love this forum, there's so many REALLY Smart people on here.

Is that Stargon CS (O2 or CO2)?
I was thinking that the gases were primarily to shield the O2 from the weld while it was hot , hmm seems like i hear hydrogens a problem too i guess the O2 might scavenge that too.

 

[J_J]

For those that don't know, you can use CO2 regulators on Stargon tanks, if you use the correct adapter. CO2 is a much cheaper gas for MIG welding, but you have a lot of spatter, and more clean up. I think Praxair is the only one that sells Stargon. Others sell the 75/25.

 

[MrJimi]

The others sell a product called tri-gas with simular properties and like J_J says CO2 will leave lots of spatter and no fun when it gets in corners

 

[J_J]

For those that don't know, you can use CO2 regulators on Stargon tanks, if you use the correct adapter. CO2 is a much cheaper gas for MIG welding, but you have a lot of spatter, and more clean up. I think Praxair is the only one that sells Stargon. Others sell the 75/25.

This is the mix of Stargon CS. verse 75/25

Mixture Composition %
Ar, CO2, O2
%
Stargon® CS Argon 90
CO2 8
Oxygen 2 On thin gauge base metals, the oxygen constituent assists arc stability at very low current levels (30 to 60 amps) permitting the arc to be kept short and controllable

75/25 Argon 75
CO2 25

 

[cqaigy2]

This is the mix of Stargon CS. verse 75/25

Mixture Composition %
Ar, CO2, O2
%
Stargon® CS Argon 90
CO2 8
Oxygen 2 On thin gauge base metals, the oxygen constituent assists arc stability at very low current levels (30 to 60 amps) permitting the arc to be kept short and controllable

75/25 Argon 75
CO2 25

As WoodlandFarms would say "Brilliant"