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What is MagMix 3 shielding gas used for?
- Thread starter Jack Ryan
- Start date
Johnnybravo
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- Northiam
I used to use it when I lived in Johannesburg. Nothing fancy,just your run of the mill Migwelding gas that’s universally available.Probably worth bearing in mind that parts of SA are high altitude, Johannesburg is just shy of 6000ft above sea level. Your car loses 12% of its power at that altitude as opposed to at sea level. Could well be why the o2 in the shielding gas looks high in comparison to what you are used to.Air products used to supply it, came in a pink and blue cylinder. I do remember even with the regulator and flow meter set correctly,it did seem to leave quite a healthy layer of brown resin on top of your weld bead.
Thanks for that.
Surprised you would call it "run-of-the-mill" as 21% is more than four times the oxygen available in any of the gases BOC supplies here.
I've not welded at anywhere near that altitude - does it make a difference? A car is using the local rarefied atmosphere, a welding machine is using pressurised gas in a cylinder. You would have to reduce the flow control relative to sea level but other than that, how is it different? I've probably missed something obvious so I apologise in advance.
That doesn't surprise me. That's one thing about welding, there is always something to surprise me.
Thanks again for responding.
Jack
I used to use it when I lived in Johannesburg. Nothing fancy,just your run of the mill Migwelding gas that’s universally available.
Surprised you would call it "run-of-the-mill" as 21% is more than four times the oxygen available in any of the gases BOC supplies here.
Probably worth bearing in mind that parts of SA are high altitude, Johannesburg is just shy of 6000ft above sea level. Your car loses 12% of its power at that altitude as opposed to at sea level. Could well be why the o2 in the shielding gas looks high in comparison to what you are used to.
I've not welded at anywhere near that altitude - does it make a difference? A car is using the local rarefied atmosphere, a welding machine is using pressurised gas in a cylinder. You would have to reduce the flow control relative to sea level but other than that, how is it different? I've probably missed something obvious so I apologise in advance.
Air products used to supply it, came in a pink and blue cylinder. I do remember even with the regulator and flow meter set correctly,it did seem to leave quite a healthy layer of brown resin on top of your weld bead.
That doesn't surprise me. That's one thing about welding, there is always something to surprise me.
Thanks again for responding.
Jack
