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Spot Welding Machine for Flux core mig, with gas?

Spot Welding Machine for Flux core mig, with gas?

Welding Automation for Flux core mig, with gas?

laser Welding Machine for Flux core mig, with gas?

Welding Automation for Flux core mig, with gas?

Welding Automation for Flux core mig, with gas?

Platform Spot Welding Machine for Flux core mig, with gas?

Platform Spot Welding Machine for Flux core mig, with gas?

Flux core mig, with gas?


Tue, 31 Aug 2021 14:34:58 GMT
I have heard you can use flux core wire with gas, in a mig welder.I also heard that flux core lets you weld thicker material, than with gas.  Is there a big difference, in thickness ability, between gas and flux?How about, when using flux core, with gas? I'm using a Handler 140.
Reply:Well, your welder should have a chart on the little flappy door and it says the max and min thickness for each wire thickness, and type. I know my Lincoln 140 is quite a big difference between max thickness. You could check yours.
Reply:"Flux core mig" with gas is called dual shield, and it's a special kind of flux core wire, not the usual self shield wire someone just added gas too. Your small mig really doesn't have the power to run dual shield wire, and there's really no advantage to trying to do so with a small unit like that.As far as welding thicker material with FC vs solid wire, if you look at the ratings chart on your unit, you notice that you have a slight advantage using FC wire over standard gas mig with 75/25 gas. 100% CO2 is usually about the same as FC or just slightly under in ratings. ( Note all those small machines are overrated as far as thickness when you factor in real world conditions) If you want to get the most out of that machine, FC might be your best bet.However you aren't going to stretch that machine very far. It simply doesn't have the output to do thicker stuff. When you start moving up to bigger migs, the FC vs solid wire comparison on thickness starts to become a non issue. If the machine has the power, it really won't matter if you use FC or solid as far as thickness. Now you are starting to look at things like deposition rate and alloy contents, total heat input etc as to which wire you want to run.Maybe if we understood what you are trying to accomplish, we could help answer a bit better. I have a feeling your question is really about something else..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:there are lots of people on this site that know more than me about this. this is what I knowThe flux core that use's gas is known by lots of name's, such as dual shield. It can be hard to find in wire size smaller than .035. It is usually used for heavy steel welding. It does weld hotter, but does use more amps to weld. The big advantage is its more ductal than hard wire. I don't think dual shield wire is a good choice for your handler 140. Maybe somebody on here can tell you more about self shielded wire, because I don't know much about it other than it usually uses electrode negative. If it was me I would stick to hard wire with c25 gas or maybe Co2.Good luckEsab 253 mig welderHobart 210 mvp w/ C25 gasmiller 225 a/c stick welderO/A torchHF 40 amp plasma cutter
Reply:You can run a little CO2 coverage with flux core. I run about 4L/min, which isnt really enough to provide a complete artificial atmosphere.Biggest thing is it makes less spatter, and a better looking weld.You want to use CO2 because the flux core depends on some reaction with oxygen to work properly. Using a little CO2 does not appear to lessen the extra penatration you get naturally from using flux core.You might be able to use C25 but only use a tiny amount, like 10cfh or less. Since CO2 works so well with self shielded wire and since CO2 is a lot cheaper than argon I never bothered to try argon mixtures.I run hard wire with about a 50% or more CO2 to argon mix.I don't normally run flux core these days.If I need more power I just break out the arc welder.
Reply:Mad welder, obviously you don't do anything that has to meet any sort of standards or codes. Adding CO2 or any other gas to gasless flux core wire, changes the chemical composition of the weld bead. The extra additives in the flux count on so much oxygen in the atmosphere to work correctly. If Lincoln or some other wire manufacturer thought adding CO2 or some other shielding gas would work, they'd make a note of it. Suggesting that someone just use gas "because" is complete BS.You may be able to get away with that sort of home weld chemistry design on yard art and stuff where it doesn't matter, but please don't go suggesting others do so..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWMaybe if we understood what you are trying to accomplish, we could help answer a bit better. I have a feeling your question is really about something else.
Reply:Originally Posted by pirateYeah, I really was was wondering, what I should have for lunch.I thought my question was simple.Amount of difference between flux core, and flux core, with gas, as far as welding thickness.
Reply:Originally Posted by pirateYeah, I really was was wondering, what I should have for lunch.
Reply:Originally Posted by pirateYeah, I really was was wondering, what I should have for lunch.I thought my question was simple.Amount of difference between flux core, and flux core, with gas, as far as welding thickness.
Reply:Originally Posted by Broccoli1For Lunch? Your manual. If your machine could handle Dual shield there would be a setting listed in the chart.Your question is simple and DSW answered it. He ALSO inquired about exactly what you want to do BECAUSE you mentioned that you have a Handler 140 and that limits what you can do.
Reply:Originally Posted by MinnesotaDaveBuffalo bacon cheeseburger with fries.
Reply:Originally Posted by vwguy3Dang you Dave! now I'm hungryI'll add chili and cheese to the fries.
Reply:Originally Posted by DSWMad welder, obviously you don't do anything that has to meet any sort of standards or codes. Adding CO2 or any other gas to gasless flux core wire, changes the chemical composition of the weld bead. The extra additives in the flux count on so much oxygen in the atmosphere to work correctly. If Lincoln or some other wire manufacturer thought adding CO2 or some other shielding gas would work, they'd make a note of it. Suggesting that someone just use gas "because" is complete BS.You may be able to get away with that sort of home weld chemistry design on yard art and stuff where it doesn't matter, but please don't go suggesting others do so.
Reply:Originally Posted by mad welder 4The instructions say gas not required. There were no warnings, cautions or notes against using gas.If using gas was going to cause the world to end I think they would mention something about it.The only thing I have used flux core plus CO2 was on my welding carts and hedge hogs which are kind of like sculptures that stop vehicles.If oxygen is so important to the weld then I should be taking some special precautions when welding at high altitudes, right?Because  above 9000 feet where I work some times there is 1/3 less oxygen compaired to sea level.There is substantially less oxygen up there, so are all open air flux core welds automatically bad?
Reply:Thats C25 and agree it should not be used.I ran 4l/min, thats less than 8.5scfh, most regulators dont even read that low, because its about half of what you need to run any kind of effective artifical atmosphere. If I try to use 4l/min of CO2 only with hard wire it makes a porous weld that clearly sounds like a popping inadequate shielded weld as it goes down.Some of The CO2 will disassociate in the arc. If aluminum is the problem metal the liberated oxygen from the CO2 will be more attracted to the aluminum than the carbon.I figure spatter is just wasted wire, time and money in the form of a messy fire hazard.I am just trying to make the process more efficient, if no one tried to improve efficiency of the welding process we would still be using an open fire and a hammers.
Reply:Originally Posted by mad welder 4Thats C25 and agree it should not be used.I ran 4l/min, thats less than 8.5scfh, most regulators dont even read that low, because its about half of what you need to run any kind of effective artifical atmosphere. If I try to use 4l/min of CO2 only with hard wire it makes a porous weld that clearly sounds like a popping inadequate shielded weld as it goes down.Some of The CO2 will disassociate in the arc. If aluminum is the problem metal the liberated oxygen from the CO2 will be more attracted to the aluminum than the carbon.I figure spatter is just wasted wire, time and money in the form of a messy fire hazard.I am just trying to make the process more efficient, if no one tried to improve efficiency of the welding process we would still be using an open fire and a hammers.
Reply:Originally Posted by SuperArcYour idea of "improving efficiency" by adding a shielding gas to FCAW-s type wire has already been tested under lab conditions years ago.   You're not reinventing water here.   I suppose that you're the type that if told by General Motors' engineers to use  "Diesel fuel" exclusively in their Diesel engines, you'd still try to "improve efficiency" by pouring regular unleaded gasoline  into your tank, just to see if they were right or not.
Reply:The other thing not mentioned in that article is that the gas especially Co2 has a cooling effect on the weld. Don't try reinventing the wheel, its round so it works .Miller xmt304,  Miller S22 p12, Miier Maxstar SD, Miller 252 w 30A, Miller super32p12, Lincoln Ranger 9, Thermal Arc 181I with spoolgun, Hypertherm 10000 ,Smith torches. Esab 161lts miniarc.
Reply:Originally Posted by cepyeah but, if you take a 120-volt drill motor, and plug it into 220-volt. You won't believe how fast it goes......................... For awhile!

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