Gas Usage between MIG and TIg?
Tue, 31 Aug 2021 15:52:02 GMT
This is probably a stupid question but say you had a mig and a tig and both had the same gas pressure and same gas which would be more costly for gas usage does one use more gas then the other or are they pretty much the same and if you were choosing between a tig and a mig both around the same money which would be better. I am not the greatest money wise right now but am in need of a welder. I eventually will be doing tig work but currently at this time am not so am wondering should I get the MIG now and the TIG later when needed or get the TIG now and just use it on what im doing which I can do because its only steel but im worried that the TIG not only will be more costly with consumables which is a given but will suck more gas and increase my gas usage. Anyone got an answer to my silly question?
Reply:Just on speed alone the mig will use less gas,also for the tig you will be using argon and less costly carbon dioxide for the mig.There are various blends of gases for either process but more costlyTrailblazer 275 {2}Dynasty 200 DXMaxstar 200Millermatic PassportThermal Dynamics Cutmaster 82
Reply:My gas supplier charges the same for 100% AR or 75/25 AR/CO2. As said above, you will produce more weld with mig in the same amount of time you would with a tig."Where's Stick man????????" - 7A749"SHHHHHH!! I sent him over to snag that MIC-4 while tbone wasn't looking!" - duaneb55"I have bought a few of Tbone's things unlike Stick-Man who helps himself" - TozziWelding"Stick-man"
Reply:Originally Posted by William Paynesay you had a mig and a tig and both had the same gas pressure and same gas
Reply:Also mind you gas cost in welding ends up being 3% of the total cost of welding. If you do the math using 85A 15CO2 it costs about $0.002 an inch of weld. 2 tenths of a penny.It's slightly more for TIG as your travel speed is generally a little slower and deposition rate is lower. Looking at the overall cost of welding in general GMAW is cheaper because you buy wire on spools which is cheaper to produce than straight sections for tig welding. If you want to be super penny pinching you can buy rolls of mig wire straighten them and use it for tig welding (something we did at one shop since we had wire straighteners and expensive alloys).If you disregard the cost of the machine, costs between mig and tig are very close, they both have consumables (tips, tungsten, collets etc) But generally GTAW is a little more.All tolled though, the overall consumables cost of welding ends up being about 17-25 cents a foot. It's pretty cheap, and when I do cost evaluation we never pick the process based on cost of consumables, in fact I usually disregard them until the very end.Welding EngineerCertified Scrap Producer
Reply:Good responses.Sounds like a candidate for a Stick Welder to me.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:Mr. Payne,Not trying to be presumptuous.......but......the most important thing to ask you is,.....do you have any previous welding experience?
Reply:Yes I have welding experiance. I am not a pro but have welded before yes. I have stick welded before gas welded before and mig welded before and done a little bit of tig. I am building a hotrod right now and am working on the chassis. I want to build a race car after my hotrod which will require alot of TIG welding. I would love in my dreams a good ACDC welder but those machines prices are beyond me. I like MIG welding it quite easy to pick up and can do both steel and aluminium. But stuff im going to in the future with 4130 will require alot of TIG work. Thanks for all the advice it makes alot of sense and has really helped me look at my current welding needs.
Reply:TIG takes a lot more hood time to become proficient as compared to MIG. Your gas usage (cost) during the learning process with TIG will exceed that of MIG.
Reply:Originally Posted by joedirt1966TIG takes a lot more hood time to become proficient as compared to MIG. Your gas usage (cost) during the learning process with TIG will exceed that of MIG.
Reply:Wire welding is overall cheaper, faster and more efficient than either tig or stick. As always, choose the right process for the job first, worry about cost second.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:One thing not mentioned about tig welding is the post flow issue. Depending on the weld being done, post flow can range from 3 to 15 seconds. You will often use much more gas on post flow than you will on the welds themselves, especially when starting out, or on smaller welds.Mig is the most economical for your average welding.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:Whats the deal with gasless and other gases like CO2 rather then argon or argon mix. I keep hearing about them and stuff but try and stay away from it myself probably because of my own ignorance and hearing to many bad stories about not using the right stuff. I get really weary of stuff that could potentially effect the integrity of the weld.
Reply:Originally Posted by William PayneWhats the deal with gasless and other gases like CO2 rather then argon or argon mix. I keep hearing about them and stuff but try and stay away from it myself probably because of my own ignorance and hearing to many bad stories about not using the right stuff. I get really weary of stuff that could potentially effect the integrity of the weld.
Reply:Thanks have often wondered about that. As my experiance with mig has all been in shops with an argon mix with the apropriate wire.
Reply:why does stick penetrate more than Mig?
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