What gas mix do you guys use for spray mig welding >.375

[Hemidude]

Myself and my 350P want to do some 1/2 inch steel and was wondering what mix is the one you currently use for spray on mild steel plate with .045 70s-6 wire? C10 C15 C20 ?

[cruizer]

98/2 thats 98% argon 2% oxygen

[Hemidude]

thanks cruzier, but not interested in trying anything with oxygen.

[cruizer]

Thats a spray gas mix, which is what you were after. Near spray with your machine cranked, you can try 85/15 15 being C02

[Hemidude]

Ok one for C15

[snowbird]

We use blueshield23 and are very satisfied with it. ar,co2,o2.

What are your reasons for avoiding oxygen?

[H80N]

Here is the link to a useful gas manual.... it explains which gasses and mixes to use for what...... and explains WHY...

http://www.prest-o-sales.com/other_l...n%20Manual.pdf

[SundownIII]

I use C10 (90% Argon/10%CO2) for non pulsed spray. When you get up to 15% CO2, you're approaching a mix (generally around 18% CO2) that's likely to produce a globular transfer vs a true spray.

The 98%Argon/2%O2 is a little hotter than the C10 and I'll use it infrequently, since my main mixer (Thermco) is set up for Ar/CO2.

For pulsed spray I'll use a 95%Argon/5%CO2 mix or the 98%Argon/2%O2.

[Hemidude]

We use blueshield23 and are very satisfied with it. ar,co2,o2.

What are your reasons for avoiding oxygen?

http://www.weldreality.com/spray_transfer_above100.htm

Ed is an acquaintance of mine.

[Hemidude]

Here is the link to a useful gas manual.... it explains which gasses and mixes to use for what...... and explains WHY...

http://www.prest-o-sales.com/other_l...n%20Manual.pdf

pg 41 added some insight thanks