SierraL_killer
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| posted on 29/6/07 at 05:29 PM |
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Mig gas
Hi I've been using CO2 for welding mild steel but i ran out and so decided to try out Aargon instead as Ive heard of some people using it. The
problem was that it seemed to react with the wire as the arc was formed - making a mess of it all. So should i be sticking to CO2 only or should i
use CO2 and Aargon mix or am i doing something wrong with the Aargon gas.
Cheers
Rob
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BenB
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| posted on 29/6/07 at 05:48 PM |
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Usually for mild you wouldn't use 100% argon, you can use CO2 with a small amount of Argon. It makes the welder neater but the penetration is
less compared to 100% CO2.
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big_wasa
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| posted on 29/6/07 at 06:01 PM |
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I used to use Co2, Then I tried Argon shield 
I wouldnt go back despite having just paid the anual rental this week 
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JoelP
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| posted on 29/6/07 at 06:11 PM |
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i remember using pure argon once and the wire just became a green haze - i think it needed more wire speed. Tend to use an argon/Co2 mix now.
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Peteff
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| posted on 29/6/07 at 07:18 PM |
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I was using 5% argon/CO2 but have gone back to using CO2 and can hardly tell the difference apart from a bit more spatter. I'll live with it.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Chippy
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| posted on 29/6/07 at 07:36 PM |
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CO2 is fine for just steel, but Argon CO2 mix is the best all round gas, will deal with steel, and stainless steel. If you want to weld alluminium
then straight Argon is a done deal. IMHO Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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RazMan
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| posted on 29/6/07 at 07:52 PM |
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CO2 makes a 'harder' arc but I use it for mild & stainless without any problems. Argoshield makes for neater welds but the disposable
bottles only seem to last 5 minutes and the CO2 bottles have more gas in them for less money.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Mark Allanson
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| posted on 29/6/07 at 08:56 PM |
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Pure argon is for TIG and special alloys only, for MIG you need the CO2 mix to give the arc sufficient 'burn'
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Peteff
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| posted on 29/6/07 at 11:22 PM |
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Stainless welded with co2 will not give stainless welds as the gas introduces carbon into the weld, it will stick it together though if you're
not fussy about the appearance.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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zetec7
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| posted on 30/6/07 at 02:59 AM |
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I use a mix of 50% CO2 and 50% Argon - very happy with it, and I can use it with stainless as well. Very clean welds on mild steel, as well...
http://www.freewebs.com/zetec7/
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