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Hi all - I use CO2 for MIG welding steel. I am wondering what my options are for CO2 ( carbon dioxide ) gas cylinder / bottle ? Unlike high-pressure mixed gas (Ar/CO2), there appear to be several sources of CO2 - some quite inexpensive. Searches on the Weldingweb, revealed a hit/miss splatter of conventional looking high-pressure cylinders, 20 lb cylinders (application unknown), beer/soft drink cylinders, fire extinguishers, paint-ball cylinders, etc. It would be great if all this information was located in ONE THREAD!So, can you enlighten me - and us all?What CO2 cylinder / bottle / tank do you use, where do you get it and what does it cost for the cylinder and how much for the gas fills?*** The Cheaper - the Better! ***Rick V
Reply:Originally Posted by Rick VHi all - I use CO2 for MIG welding steel. I am wondering what my options are for CO2 ( carbon dioxide ) gas cylinder / bottle ? Unlike high-pressure mixed gas (Ar/CO2), there appear to be several sources of CO2 - some quite inexpensive. Searches on the Weldingweb, revealed a hit/miss splatter of conventional looking high-pressure cylinders, 20 lb cylinders (application unknown), beer/soft drink cylinders, fire extinguishers, paint-ball cylinders, etc. It would be great if all this information was located in ONE THREAD!So, can you enlighten me - and us all?What CO2 cylinder / bottle / tank do you use, where do you get it and what does it cost for the cylinder and how much for the gas fills?*** The Cheaper - the Better! ***Rick V
Reply:Gnm109 - thanks for the response (I was starting to get lonely.)On the 20 lb tank:OK on the ~$25 to exchange - that sound cheap... but a few questions:1 - 'exchange': Is this (a) a fill while you wait - or as it sounds, (b) you drop off your MT tank and leave with a full one?2 - Did you have to purchase this tank initially? If so, how much was that?3 - What is a HazMat fee.... and how much is that?Rick V
Reply:If you are going to weld with the CO2, you should get your gas from a welding supply, instead of getting paintball, beer/soda cylinders, or fire-extinguishers. When you weld, you need high quality welding gas to avoid moisture and other impurities that may be in the gas meant for uses other than welding.
Reply:I too, use CO2. Where I got the bottle... if I told ya, I'd have to kill ya. Just joking, Had it for years, can't remember where. I get it exchanged at the local welding supply house. If memory serves, it's like 20 bucks plus taxes, fees, title,... on a 20lb tank. ( though I could probably borrow a CO2 tank from work's soda fountain, regulator is the same ).
Reply:Originally Posted by Rick VGnm109 - thanks for the response (I was starting to get lonely.)On the 20 lb tank:OK on the ~$25 to exchange - that sound cheap... but a few questions:1 - 'exchange': Is this (a) a fill while you wait - or as it sounds, (b) you drop off your MT tank and leave with a full one?2 - Did you have to purchase this tank initially? If so, how much was that?3 - What is a HazMat fee.... and how much is that?Rick V
Reply:Gnm109 - thanks for the clarification. Hey the ~$25 per fill sounds great... but the $150 initial buy-in looks pretty steep.Geez, it's like the old joke... "Well I gotta Good News and I gotta Bad News!"Your dual option: a choice between either 100% Argon or 100% CO2 sounds a good way to proceed considering your equipment.So, I wonder where Slamdvw got his tank / bottle / cylinder ??? Sounds like once you have an acceptable container, you can operate very economically on CO2 for less than 1/2 the price of mixed Ar/CO2.Weldrwomn has a concern about CO2 gas quality. I wonder though. I mean we are talking about welding - blowing gas (with air swirling around) over an arc and hot metal. We don't need medical quality gas and further we are not dissolving it a beverage (beer / soft-drink) that we are going to ingest. While I could see the need for dry gas, I doubt that welding CO2 gas is the purest from of CO2 available. Heck, they dope up mixtures of Argon, helium, oxygen, CO2 - and charge you more; I doubt that trace amounts of other gas will have a great affect - especially on MY WELDS!! Ha, Ha! You guys/girls response been useful... still waiting to hear about other possible sources for CO2.Rick V
Reply:Originally Posted by Rick VGnm109 - thanks for the clarification. Hey the ~$25 per fill sounds great... but the $150 initial buy-in looks pretty steep.Geez, it's like the old joke... "Well I gotta Good News and I gotta Bad News!"Your dual option: a choice between either 100% Argon or 100% CO2 sounds a good way to proceed considering your equipment.So, I wonder where Slamdvw got his tank / bottle / cylinder ??? Sounds like once you have an acceptable container, you can operate very economically on CO2 for less than 1/2 the price of mixed Ar/CO2.Weldrwomn has a concern about CO2 gas quality. I wonder though. I mean we are talking about welding - blowing gas (with air swirling around) over an arc and hot metal. We don't need medical quality gas and further we are not dissolving it a beverage (beer / soft-drink) that we are going to ingest. While I could see the need for dry gas, I doubt that welding CO2 gas is the purest from of CO2 available. Heck, they dope up mixtures of Argon, helium, oxygen, CO2 - and charge you more; I doubt that trace amounts of other gas will have a great affect - especially on MY WELDS!! Ha, Ha! You guys/girls response been useful... still waiting to hear about other possible sources for CO2.Rick V
Reply:http://www.harborfreight.com/cpi/cta...emnumber=92821My Babies: HF Drill pressHF Pipe Bender3 4.5" Black and Decker angle grindersLincoln Electric PROMIG 175that´s it!
Reply:Originally Posted by elvergonhttp://www.harborfreight.com/cpi/cta...emnumber=92821
Reply:Hi all,I looked into CO2 and C25 (Argon 75% / CO2 25%) prices in Ottawa and present the welding and fire-fighting gases prices below.[By the way, to convert the Canadian dollar to US$, multiple by 0.88, that is the Canadian dollar = 88 cents US. So, if it says $100, that's $88 to you Southern Boys]BOC Prices Ottawa October 12, 2006Cylinder.....Gas......Volume......Rental......Own. ......RefillK..............CO2......~50 lbs.....$95.75/yr...No.........$ 56.75C..............CO2......~15 lbs.....$67.05/yr...No.........$ 32.25T...............C25......~330 cf.....$95.75/yr...No.........$148.50M..............C25......~120 cf.....$95.75/yr...No..........$ 64.75C..............C25......,~ 55 cf......$95.75/yr...No.........$ 47.50C..............C25.......~55 cf.......................$282.......$ 47.50Air Liquide Prices Ottawa October 12, 2006Cylinder.....Gas......Volume......Rental......Own. ......Refill?...............CO2......~64 lbs.....$72.00/yr...No.........$ 78.00?...............CO2......~50 lbs.....$72.00/yr...No.........$ 58.82?...............CO2......~20 lbs.....$57.95/yr...No.........$ 31.64?...............C25......~290 ft3....$72.00/yr....No.........$148.62?...............C25......~124 ft3....$72.00/yr....No.........$ 84.00?...............C25......~ 40 ft3......................$185......$ 49.00Davidson Fire Extinguisher - (Purchase only: used tank (hydro'ed) + new valve)Cylinder.....Gas......Volume.............Rental... ...Own.......Refill?...............CO2.....~ 5 lb (...40 cf)....No............$ 95....$16.00?...............CO2.....~10 lbs (..80 cf)....No............$115....$16.50?...............CO2.....~15 lbs (120 cf)....No............$130....$17.60?...............CO2.....~20 lbs (160 cf)....No...........$155.....$21.00Refills of your own tank are done while you wait.So, what have we got so far?Based on 120 cubic foot cylinders of C25 or 15 lbs of CO2 (1 lb CO2 = 8 cf), C25 costs 2 to 5 times as much as CO2 depending on the source of CO2.1 From the Fire Fight Guy: CO2- a 20 lb tank holding 160 cubic feet cost $155 to purchase, $21 to fill (7.5 cf/$).2 From the Welding Guy: CO2- a 20 lb tank holding 160 cubic feet is ~$60/yr rental cost, $31 to fill (5.2 cf/$).OR3 From the Welding Guy: CO2- a 50 lb tank holding 400 cubic feet is ~$72/yr rental cost, $60 to fill (6.6cf/$)4 From the Welding Guy: CO2- a 64 lb tank holding 512 cubic feet is ~$72/yr rental cost, $78 to fill (6.6cf/$)So, the best deal on volume of gas for the buck is #1: 7.5 cubic feet per dollar from the Fire Fight Guy.Comparing the 160 cubic foot options, in 2.5 years of rental you could pay off the purchase price of the fire extinguisher tank.Rick V
Reply:My local supplier is pretty good, just got my 380 tank for MIG filled for $38. John - fabricator extraordinaire, car nut!- bleeding Miller blue! http://www.weldfabzone.com
Reply:I am wondring if there may be other sources for CO2 gas cylinders / tanks / bottles - other than welding gas suppliers and fire extinguisher companies?Any ideas?Rick V |
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发表于 2021-9-1 00:59:17