Thanks guys this helped alot. and nice pics.. i have a ABCO not to far from where i live so ill go pick a tank up and continue. the flux core im using is just a pain. and im not a experienced welder so i hope that useing the argon will make this a little more easier..

Vinnie

 

The gas probably won't make each weld easier, but it will make it WAY easier to put together multiple stitch welds. The gas will serve you well.

 

o i no im not expecting the gas to make me look like a pro. I just am expecting to be able to actually get the job done with out cusing at the metal because all im doing is making a big mess. i burn through before i can puddle the whole

 

If you think flux core is messy, try good old fashioned stick welding. THAT'S messy. Lots and grinding and wire wheeling when you do that.

 

No, it's nothing like stick welding, but the flux mess still must be cleaned up before topping it with another tack.

 

Yeah, at least it cleans up rather easily with a wire wheel.

 

If you're MIGing in a sheet metal patch, you should be doing it by bouncing around all over it with small tacks. This is to prevent the concentration of heat in any one place so as to prevent warping.

If you're going to use a wire wheel every time you are about to weld over another weld, you will spend MUCH more time with the wire wheel than you will with the welder. Even then, there will be small particles of flux mixed in with the welds.

For the purpose of sheet metal patching gas is FAR superior to flux core. Flux core should be avoided at all cost for such a process.

 

Yeah. Gas shielded is very clean. Flux is good for welding heavier structural stuff that no one will see without using a lot of electricity.

 

Since i guess this would be a relative topic to post this question in i think i will do so. I'm helping a buddy weld in some pans in his car. Ive never done pans before so what should i use for settings/wire. Ive got 75/25 argon/oxy and so which wire should i use and what heat settings?

 

depends on your welder really. you need about 1A per 0.001" as a general guide. most of the sheet metal is about 0.030, and doubled up would be 0.060 or 50-60A. that's either 1 or 2 on most 110v MIG welders depending on whether you're doing butt welds or rosette welds or flanged welds. if you have an adjustable dial for voltage/amperage you can really dial it in.

0.023 or 0.030 wire. if you have oxygen in your gas without carbon, you've got the wrong stuff.