|
|
Post by Repete on Aug 28, 2005 19:21:22 GMT -4
What do folks think about the tri-gas for Mig welding? I've only used the CO2/Argon, and the only experience I had with tri was a friend swearing at it - it spattered too much. Maybe depends on the diameter of the wire - I prefer to use .026. Any thoughts?
|
|
NW
Jeeper
Posts: 207
|
Post by NW on Aug 29, 2005 8:28:02 GMT -4
I have welded with both, and found similar results. The tri-gas supposedly has more penetrating power (from the addition of O2) but I found no real differnence. If you want more power go FCAW or stick. I did notice a small amount fo splatter, but that was controlable when I adjusted the gas flow rate.
-Neil
|
|
|
|
Post by georgecrooks on Aug 31, 2005 13:54:13 GMT -4
splatter with tri gas . your doing some thing wrong mor splatter with co2. i have used metal match steel no splatter even on a $300 canadian tire mig.migs like clean metal plain and simple.
|
|
NW
Jeeper
Posts: 207
|
Post by NW on Aug 31, 2005 15:43:02 GMT -4
Try turning the flow rate down. A little splatter and the weld looks like solder. I am used to FCAW, and I like it so I don't know what a "lot" of splatter is with MIG. In the business that most of us are in here, I will venture to say that it won't make a whole lot of difference, get what ever you want. If you're doing thin use gas, if you got medium use flux cored, and thick is stick. If your buddy says it splatters, and george says no someone is talking crap, and you gotta ask the guy at the counter over at liquid air. My point is if you like the Ar-CO2 then stick with that, concentrate on better prep and technique for better results. PS I don't think a little splatter is anything to swear about  |
|
|
|
Post by Repete on Aug 31, 2005 16:15:17 GMT -4
I asked the guy at the counter, and he said that they have had a few folks complain about spatter with the tri-gas. But he said also that it's all what you're used to... I'm used to 75/25 Blueshield, so I went with that.
As far as what I've seen, the friend I saw trying Tri-gas and spattering welds beautifully with 75/25 - and he was in "the business". Maybe its a matter of experimentation to make it work right.
Builtfordtough, why would you go with flux core for medium welds... I seem to get better penetration with gas - better burn in.
|
|
NW
Jeeper
Posts: 207
|
Post by NW on Aug 31, 2005 16:26:13 GMT -4
Well, Lincoln E says that the FC will penetrate better, so I decided to test it, I butt welded some 5/16 steel together with both, and the FC held out a lot longer under the press. Maybe if I was really good, I could get better results with the gas.
|
|
|
|
Post by georgecrooks on Sept 1, 2005 7:57:21 GMT -4
didnt mean to emply people talking crap neil LOL. just that i have used metal match steel quite a bit(3 gas mix i do believe?) and no splatter on my part nice gas for sheet metal.i did enough 78-87 GM car rear frame rails with it that i care to remember .
|
|
NW
Jeeper
Posts: 207
|
Post by NW on Sept 1, 2005 9:27:53 GMT -4
I did find after some use I got the feed and flow set up and it was makming some nice welds, but like I said I wouldn't say they were better or worse than the AR-CO2.
Anyone know about strength? The machinery's handbook says that the O2 in trigas gives it more power..
|
|
justajeep
Moderator 
Valley - VP
Bear River, NS
Posts: 7,214
|
Post by justajeep on Sept 1, 2005 10:04:22 GMT -4
I use Autoweld from Praxair. It doesn't say on the label what's in it, just that it's a gas mixture. It's supposed to be for welding dirty metals (like Jeeps), and it works very well. I just made a tailgate for a trailer from a crusher screen and used painted angle iron, and it was no problem to weld without grinding anything.
You can also get MIG wire that is for welding dirty metal too, but it costs close to $50 for an 11 lb roll.
I've used CO2 before and I don't know that it actually spattered more, but it definitely gives a shower of sparks, and has a sizzling sound while welding.
|
|
|
|
Post by MudLite on Sept 1, 2005 11:31:40 GMT -4
Builtfordtough, why would you go with flux core for medium welds... I seem to get better penetration with gas - better burn in. Gas will give you a cleaner weld, but it also cools the weld down. This shouldn't be a problem with 3/16 and a good 208 welder. You should have plenty of penetration for rocker guards and bumpers.  |
|
|
|
Post by Repete on Sept 1, 2005 15:03:25 GMT -4
Mudlite, hey man - nice to see you coming on board. I didn't know about cooling the weld... but I know I'm getting much better welds using the gas as compared to the flux.
|
|
|
|
Post by MudLite on Sept 2, 2005 13:52:43 GMT -4
Mudlite, hey man - nice to see you coming on board. I didn't know about cooling the weld... but I know I'm getting much better welds using the gas as compared to the flux. Been here for a while, what took you so long? ;D |
|
