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Re: How much weld time from 1lb of CO2 ?

I also use CO2 for tasks like tire pressure topoff and briefly running pneumatic blow guns. It will run pneumatic tools in a pinch. Instead of the fancy power tanks I have a 200psi fixed pressure Western gaugeless regulator with a brass pneumatic chuck. I use quality rubber air hoses (longer gives more room for CO2 to expand). Many off-roaders carry CO2 to fill tires after airing down for traction.

BTW I use MIG mix or argon (whatever cylinder is nearby) to pressure test car amd truck AC systems since vacuum isn't very good for finding leaks and the "nitrogen" regulators of course fit.

Re: How much weld time from 1lb of CO2 ?

I got about 15 minutes of good welding time out of this 1lb CO2 tank. Set regulator for 40psi, and ran at 20psi when welding. after about 18minutes the flow starts to drop off, the welds start to look greyish. At about 20 minutes the gas stops abruptly. I tried this on my snap on welder, but I think this will be a good addition to the lincoln mp210 accessories, it will even fit inside the machine with the wire spool. I don't think I got a full load in the 1lb.(maybe 14oz) tank so I think counting on 15 minutes is a safe bet. Will still keep my eye out for a slightly larger tank.


Attachment 1718994

Re: How much weld time from 1lb of CO2 ?

Found this on Amazon for the 1lb cylinder

Attachment 1718920

I saw some 5lb cylinders on there for about $65 , think I'll just keep and eye out on craiglist for a really cheap one.

Re: How much weld time from 1lb of CO2 ?

On time as always, thank you McMaster-Carr !

High-Pressure Threaded Fitting for Compressed Gas
Adapter, CGA-320 Female Tank x CGA-580 Female Regulator
McMaster-Carr #-7923A13





Attachment 1718916

Re: How much weld time from 1lb of CO2 ?

Originally Posted by ronsii

LOL!!!! Oh... you haven't seen my sawmills some day I may need one of those bolts way down in the bottom of that box

Yeah, that lug nut cover might save the day...

Re: How much weld time from 1lb of CO2 ?

Originally Posted by Lis2323

Looks to me like you went to a LOT of work to gather such a complete collection of fasteners that would NEVER be of any use near a sawmill. [emoji1]


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LOL!!!! Oh... you haven't seen my sawmills some day I may need one of those bolts way down in the bottom of that box

Re: How much weld time from 1lb of CO2 ?

Originally Posted by ronsii

Here's a box of bolts I keep down by the sawmill in case I need something...
Attachment 1718894

Looks to me like you went to a LOT of work to gather such a complete collection of fasteners that would NEVER be of any use near a sawmill. [emoji1]


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Re: How much weld time from 1lb of CO2 ?

Originally Posted by ronsii

I can only wish I was half as organized as you are....

Here's a box of bolts I keep down by the sawmill in case I need something...
Attachment 1718894

Yeah, I have "bolt bin in a can" in the service truck...

Re: How much weld time from 1lb of CO2 ?

Originally Posted by Lis2323

Found them! Good tip thought [emoji106]





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I can only wish I was half as organized as you are....

Here's a box of bolts I keep down by the sawmill in case I need something...
Attachment 1718894

Re: How much weld time from 1lb of CO2 ?

So what is out come
With all this data given here.

Dave

Originally Posted by albrightree

Came into some surplus CO2 and was thinking of using a one or two lb tank as a portable gas source when doing small mig jobs(mild steel) rather than dragging a 80, of 120 cf bottle of 75/25 with me. Just wondering how much weld time I could get with a pound or two of CO2 ?

Thanks

Re: How much weld time from 1lb of CO2 ?

Originally Posted by Lis2323

I bought a couple of extra also and put them "in a safe place".

I hope I come across them before I actually need it.


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LOL!!!! BTDT... a lot

Re: How much weld time from 1lb of CO2 ?

Originally Posted by Lis2323

Found them! Good tip thought [emoji106]





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I like that, I use trays like that too to keep stuff for each machine on hand. If I'm going to take the suitcase to the field all I have to do is grab that tray and go.

Re: How much weld time from 1lb of CO2 ?

Originally Posted by 12V71

I have used O-rings in a pinch and had them work well. Stick them in the groove with a touch of "hi tack" gasket cement.

Found them! Good tip thought [emoji106]





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Re: How much weld time from 1lb of CO2 ?

Originally Posted by Lis2323

I bought a couple of extra also and put them "in a safe place".

I hope I come across them before I actually need it.


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I have used O-rings in a pinch and had them work well. Stick them in the groove with a touch of "hi tack" gasket cement.

Re: How much weld time from 1lb of CO2 ?

I bought a couple of extra also and put them "in a safe place".

I hope I come across them before I actually need it.


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Re: How much weld time from 1lb of CO2 ?

I have a few extra and used a bread bag twisty to tie them to the handle on my welder.

Re: How much weld time from 1lb of CO2 ?

Originally Posted by Broccoli1

make sure you use the washer with the adapter.


Attachment 1718840

Funny that you mention this, I didn't notice the gasket when I first hooked up my tank to my filling adapter. Didn't know the CGA320 fitting had a gasket, unlike the CGA580. When I flipped the tank to fill the smaller cylinders and cracked open the main valve, I had a frosty little leak.
Found the gasket in the mailer later on.
https://www.weldingweb.com/images/smilies/laughing.gif

Attachment 1718881

Re: How much weld time from 1lb of CO2 ?

The small gray tank in this photo is a 20 pound CO2 I believe. I got it from a business that services fire extinguishers $100 Cdn (about $75 USD) filled.




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Re: How much weld time from 1lb of CO2 ?

make sure you use the washer with the adapter.


Attachment 1718840

Re: How much weld time from 1lb of CO2 ?

Here's the wire.

Attachment 1718834



Attachment 1718835

Blue Demon doesn't list gas mixtures or flow ratings on their website like lincoln , hobart, and ESAB.

https://weldingmaterialsales.com/cat...71t-1-1m-plus/

this another application paper I found on the web(New Zealand?), says maximized for mix. At least they show CTWD .

https://www.globalweldingsupplies.co...DF/MWMF_BD.pdf

I'm guessing that the "M" is for mixed gas, and the "C" 100% CO2. So I think it should be fine. I read something about using CO2 would have a slightly lower tensile strength, but I don't think enough for me to worry when welding bollards, and plow frames.

Just ordered the 580 to 320 adapter from Mcmaster, will order the little one from amazon. If the one lb doesn't work out , I can always use it to carbonate something (water, cider, beer).

Happy Election Day !

Re: How much weld time from 1lb of CO2 ?

I'm all about working smart too, The little bottles would probably work out ok for that, especially if you can bring a few with you. If you were buying new ones that's where I'd think the 5 pound would be useful to get more weld time and still light weight.
As for the regulator, I use a regular one with a cga 580 to cga 320 adapter

Re: How much weld time from 1lb of CO2 ?

Originally Posted by albrightree

I wonder if the CO2 will work with the dual shield I already have ?

Most likely. Check the class.

Re: How much weld time from 1lb of CO2 ?

I have plenty of bottles of Argon, and AR/CO2. I traded in my 60 cf argon/CO2 back to straight argon again to do portable aluminum spoolgun welding. My other 2 bottles are 300cf Argon, and AR/CO2 mix at the home shop. I figured the 20 lb CO2 would be the back up or portable tank for mobile jobs. The real question was about using the soda stream 1lb tanks as I have more than I need now that I can reload at home now. I figured it might be handy for small jobs like welding a fender back on, or fixing a dock plate , or walk over platform at work quickly . Most small repair jobs are about an hour of fit-up to 10 minutes of welding. So I think a re-fillable 1lb would come in handy. Trust me, I've done my share of lifting 300 cf cylinders onto scissor lifts, and hooking together 12ft, and 25 ft hoses together to reach a weld job on top of a tank 40 ft in the air. Never been afraid of hard work or getting dirty, done plenty of both. Just why waste time and energy if its unnecessary. Now I need to find a regulator for the CO2 that fits the welder, all my regulators are CGA580,and I think the CO2 is a CGA320 .I will need to check. I will also need a small kegulator for the 1lb CO2 cartridge .

I wonder if the CO2 will work with the dual shield I already have ?

Re: How much weld time from 1lb of CO2 ?

Originally Posted by ronsii

[/COLOR]
Cool!!!!!

You will find is CO2 is use is Ag/farm equipment, Furniture, Fencing any where they having to keep the cost down.

The places that like mix gas is Machine Shops, Repair Shops, and any where low production with high cost labor.
Code work requiring may require mix gas too.

Dave

Re: How much weld time from 1lb of CO2 ?

Originally Posted by MinnesotaDave

Yep, I use co2 almost exclusively as well. I use the 20lb tanks but also have a 5 pounder.

I've even welded car body panels with 0.035" wire and co2. Welds just fine
(the 0.035 was already in the machine, just left it)

Added bonus, the duty cycle on a mig gun is at it's highest with straight co2.

Cool!!!!!