gas mixture, guage settings

[mooseatk]

What are the guage setting for argon/co2? I dont know what should they be
can't find any info

[JalopyBldr]

I set mine to 15-20 psi.

[Broccoli1]

I set mine to 15-20 psi.

CFH :)


Cubic Feet Per Hour

[hogan]

you can get this info from the wire manufacture

[TexHand]

I can usually get by at 10CFH, if I get porosity, I bump it up to 15.

[Brianstick]

When i weld in the garage i only use 12 cfh. Like Tex said i only turn it up if i need it.

[JalopyBldr]

CFH :)


Cubic Feet Per Hour


Oopps!!! :o

Yep, I meant to say "CFH", not "PSI". Too much of a hurry, I guess

[hankj]

What are the guage setting for argon/co2? I dont know what should they be
can't find any info

The "standard" recommendation is 20 CFH. However, as you see from the other answers, that high of a flow rate is not necessarily needed.

I've had siccess with a low as 8-CFH depending on the material, and the welding location (inside; no breeze). If you are outside, you will need a higher flow rate than if you are inside in still air.

If you see small "pinholes" (porosity) in your weld bead, you need a higher flow rate. Conversely, you can turn it down until you see porosity, then bump it up.

Try welding on some coupon stock with the gas off. That be maximum porosity!;)

Hank

[Rocky D]

....
If you see small "pinholes" (porosity) in your weld bead, you need a higher flow rate. Conversely, you can turn it down until you see porosity, then bump it up.

Try welding on some coupon stock with the gas off. That be maximum porosity!;)

Hank
Pinholes can also be caused by oil or other contamination, so try to determine just what is causing it.

I agree with Hank on testing, and it is also good to do other tests that you know are wrong, just to see the outcome, that way you will know for sure when it happens and the cause of what is messed up....i.e. : welding with the wrong polarity...we learn by our mistakes...(who said that??) :D