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MIG with flux core and gas

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MIG with flux core and gas

Postby TDubs » Sat Sep 30, 2017 10:09 am

Hi Guys,

I'm trying to figure a couple of things out. I've been doing MIG with .030 flux core and getting decent welds on 1/8" steel using a 180 amp MIG unit. A friend of mine who is a former industrial arts teacher keeps telling me to add a 25/75 tank of argon/co2 to my kit and that I'll get much better welds. The only thing that really bothers me with my welds is cleaning off the splatter. I'm getting good penetration as I've cut some of my test welds and they're solid.

My question is, if I add the tank, can I still use flux core or should I go to flux-less MIG wire?

Thanks,

Terry
Terry

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Re: MIG with flux core and gas

Postby MinnesotaDave » Sat Sep 30, 2017 10:25 am

You have 3 options
-stay with self-shielded fluxcore
-buy dual-shield fluxcore that is designed for the addition of gas shielding
-switch to solid mig wire and use 75/25 or 100% co2

Solid wire is cheaper and much cleaner. Both flux core types will have more cleanup after welding.
I used solid wire most of the time.
Outside I have used self shielded flux core when needed, but if the wind is low, I continue using solid wire.

When you switch to solid wire, remember to change your polarity opposite of self shielded fluxcore.
Dave J.

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Re: MIG with flux core and gas

Postby ODIS » Sat Sep 30, 2017 12:23 pm

I have found using 100% co2 with my 210 MVP welder to work just fine. I have gotten very little spatter when I get it dialed in and the cost of a 20lb bottle and a 10LB spool of .030 wire to be less than the cost of Lincoln or Hobart flux core. I'm on my next spool and still have plenty of gas left.
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Re: MIG with flux core and gas

Postby TDubs » Sat Sep 30, 2017 2:24 pm

Thanks Dave and Odis,

Gas and clean wire it is. I'll get a tank next week with clean wire and give it a whirl. Thanks for the reminder on polarity change Dave. I read that in the manual when I first bought my machine. But it's always good to have a reminder.

Thanks again,

Terry
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