Upgraded my welder to MIG, CO2/ Argon mix. PSI recommendations |
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Upgraded my welder to MIG, CO2/ Argon mix. PSI recommendations |
Socalandy |
Dec 18 2009, 11:36 PM
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#1
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Its got to be Yellow!!! Group: Members Posts: 2,432 Joined: 29-August 09 From: Orange Member No.: 10,742 Region Association: Southern California |
With all the welding (IMG:style_emoticons/default/welder.gif) coming up on the -6 car I purchased the MIG conversion kit for my Lincoln. It is much cleaner and has better penitration but I'd like to get some feed back on where to set the PSI for the CO2/ Argon mix. Want to have enough but not waste it either.
seems to work well on 16 gage steel with 20psi |
TravisNeff |
Dec 18 2009, 11:45 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
I use 31-32psi. I use .023 wire and argon/co2 mix.
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Elliot Cannon |
Dec 18 2009, 11:53 PM
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#3
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
I use 25-27 psi with .023 wire with good results. You need just enough flow to prevent oxygen from getting to the weld. Oxydation (also known as rust) is bad for the weld and for the metal the car is made of. That's just a beginners opinion. Hopefully we'll hear from some of the experts.
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wayne1234 |
Dec 18 2009, 11:59 PM
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#4
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Member Group: Members Posts: 260 Joined: 6-April 09 From: indianapolis in Member No.: 10,238 Region Association: None |
Wow I'm using about(edited see below) 20PSI. Lincoln HD175 it is a 220 volt model but I dont think that would matter much. I use Lincoln wire Super Arc L56 it is .030 .. I have went through 4 of the 2lb rolls on my 914. and just got the bigger roll this time I forget the size of my tank it is about waist high, and it will last just a little better than 2 rolls. When I have welded outside on other projects I have turned up the psi due to wind.. going from the flux cored stuff you will love it.dont forget that roller feed wheel needs to be flipped for different size wires, and going to gas welding I had to switch the connections in the welder, on mine at least...
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wayne1234 |
Dec 19 2009, 12:17 AM
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#5
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Member Group: Members Posts: 260 Joined: 6-April 09 From: indianapolis in Member No.: 10,238 Region Association: None |
Ok I had to go look at my manual... and my welder.. oops there are 2 sets of measurements on my gauges, it appears that 10 CFH which stands for Cubic Feet per Hour is the same as 20 Psi,,, (IMG:style_emoticons/default/headbang.gif) DUH so your right there.. sorry
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Elliot Cannon |
Dec 19 2009, 12:23 AM
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#6
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
Solid wire should be DCEP or Elecrode Positive.
Flux core wire should be DCEN or Electrode Negative. That's as per the manual for my Millermatic 180. Your results may... |
TravisNeff |
Dec 19 2009, 12:27 AM
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#7
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
Yes, you need to reset the polarity of the welder. I can't remember where I came up with 31PSI, last time i was doing a lot of welding I was getting a lot of outside wind, anyways I think I fooled with it to where I liked the results.
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Bruce Allert |
Dec 19 2009, 12:29 AM
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#8
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Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
With all the welding (IMG:style_emoticons/default/welder.gif) coming up on the -6 car I purchased the MIG conversion kit for my Lincoln. I have an AC/DC Lincoln Tombstone welder. Did you put this conversion kit to a stick welder? ....b Attached image(s) |
TravisNeff |
Dec 19 2009, 12:34 AM
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#9
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
Yes, if you convert to 3/8" body panels...
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Bruce Allert |
Dec 19 2009, 12:37 AM
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#10
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Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
No, I mean the mig kit (IMG:style_emoticons/default/lol-2.gif) I have been welding aluminum with the stick with great results and thinner body panel stuff also. Migs are just easier.
......b |
Socalandy |
Dec 19 2009, 01:00 AM
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#11
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Its got to be Yellow!!! Group: Members Posts: 2,432 Joined: 29-August 09 From: Orange Member No.: 10,742 Region Association: Southern California |
thanks for the input guys, the kit came with super arch ,023 wire and I guess Im in the range unless the wind is blowing, I did switch from flux core and changed from Neg. electrode to positive. (IMG:style_emoticons/default/welder.gif)
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914_teener |
Dec 19 2009, 01:12 AM
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#12
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914 Guru Group: Members Posts: 5,198 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Andy,
AWS suggests.....and back in the days when I was an ME........ haven't been one in years cause we don't make anything here (US) anymore...... an 80% argon mix to 20-25% Co2 mix for carbon steel for thicknesses of less than .125. For over .125 use a 50-50 mix of argon C02. For non-ferrous a "tri mix" is best, that would be 90% helium 7% argon and 2% Co2. Flow rates of the gas will depend upon the transfer type...this is the arc transfer..this is difficult to describe but basically the voltage drop across electrode to the base metal. Also it will depend upon the conditions you are welding in and the cup you are using to sheild the weld surface plus the thickness of the metal you are welding. I have found that most instances about 30 CFH for a flat position weld should be fine. Since C02 is heavier than air then an out of position weld will require more CFH for adequate sheilding. The tri mix is really expensive so most folks use Co2. Hope this helps....... If you need any help...which it doesn't look like you do... by your car.... let me know. Rob |
Socalandy |
Dec 19 2009, 01:55 AM
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#13
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Its got to be Yellow!!! Group: Members Posts: 2,432 Joined: 29-August 09 From: Orange Member No.: 10,742 Region Association: Southern California |
Thanks Rob,
its $35 for a refill of Argon/CO2 on my half bottle. A few pics and the mix ratio from the local Airgas dealer. I ordered a cart after checking the price versus building one. It's not as portable as it was before Attached image(s) |
Elliot Cannon |
Dec 19 2009, 02:00 AM
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#14
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
Now get busy and weld up a little cart with casters for that stuff. (IMG:style_emoticons/default/welder.gif)
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scotty b |
Dec 19 2009, 09:12 AM
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#15
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
Holy beegeezus !! You guys are wasting ALOT of gas !! 12-15 cfh is ALL you need unless you are welding outdoors. 75/25 mix, .023 wire and 15psi is all you need for anything on a 914, unless you get to welding on the suspension. Even then you won't need any more gas flow, just larger wire and higher amperage.
And for all you folks that think you need to buy a 300 amp machine, all I have at the shop is a 140 Miller MIG and it is all I need on a car. I do have a 250 at home and a 200 amp tig, but the 140 mig is all I use at work for body work. |
pcar916 |
Dec 19 2009, 09:21 AM
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#16
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None |
Holy beegeezus !! You guys are wasting ALOT of gas !! 12-15 psi is ALL you need (IMG:style_emoticons/default/agree.gif) I've never used more than 15 psi |
jasons |
Dec 19 2009, 09:21 AM
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#17
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Jackstand Extraordinaire Group: Members Posts: 2,002 Joined: 19-August 04 From: Scottsdale, AZ Member No.: 2,573 Region Association: None |
I have pretty much the same welder, but mine is the 135. I run my gas (C25 same as you) at around 15lbs on the trigger. I believe I got that from the Lincoln manual.
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914_teener |
Dec 19 2009, 09:55 AM
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#18
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914 Guru Group: Members Posts: 5,198 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
I have pretty much the same welder, but mine is the 135. I run my gas (C25 same as you) at around 15lbs on the trigger. I believe I got that from the Lincoln manual. Yes...checked.... 15-20 CFH should be okay for 1/8 steel....our little cars unibody is just sheet metal. I am used to bigger stuff. You guys though are talking about 15 psi which is pressure...flow rate is different. I think somebody else already said that. Keep a short arc length...hold the end of the arc close to the base metal..short arc transfer is better with Co2. Have fun on your new car Andy. Rob |
ghuff |
Dec 19 2009, 12:04 PM
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#19
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This is certainly not what I expected down here. Group: Members Posts: 849 Joined: 21-May 09 From: Bodymore Murderland Member No.: 10,389 Region Association: MidAtlantic Region |
Holy beegeezus !! You guys are wasting ALOT of gas !! 12-15 cfh is ALL you need unless you are welding outdoors. 75/25 mix, .023 wire and 15psi is all you need for anything on a 914, unless you get to welding on the suspension. Even then you won't need any more gas flow, just larger wire and higher amperage. And for all you folks that think you need to buy a 300 amp machine, all I have at the shop is a 140 Miller MIG and it is all I need on a car. I do have a 250 at home and a 200 amp tig, but the 140 mig is all I use at work for body work. the man has spoken, and it has been declared. Really could you post like an FAQ of wire size and gas etc. for various areas of the 914? I am getting ready to do a bunch of stiffening stuff and seam welding. Also a couple 1" patches here or there. I would wish 10 million x good karma upon you and your ilk for generations to come. That kind of knowledge is awesome. |
McMark |
Dec 19 2009, 12:20 PM
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#20
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I've been using 12 psi for years now. But I'm always welding indoors.
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