9lrac9... Here, new to the W/F just another old guy with tons of experience, and still learning something new about welding and people that weld thats the interesting part. a lot of people have some interesting way to aprroach different weld proscesses. My question today is tell me the good and the bad of flux core wire in welding mild steel. I have a 135/ Mig with .035 flux core and it's a 220amp machine, and I'm welding a roll cage 1 3/4 .120 wall, will it be strong?

9lrac9:)

9lrac9... Here, new to the W/F just another old guy with tons of experience, and still learning something new about welding and people that weld thats the interesting part. a lot of people have some interesting way to aprroach different weld proscesses. My question today is tell me the good and the bad of flux core wire in welding mild steel. I have a 135/ Mig with .035 flux core and it's a 220amp machine, and I'm welding a roll cage 1 3/4 .120 wall, will it be strong?

9lrac9:)


Ahha, the good and the bad. Flux core welding is aligned with the likes of stick or SMAW welding. The flux has it's good points, and it's bad. The flux can change the properties of the weld, adding ductility, or tensile strength, the trade off is dealing with the flux, the other good thing is you don't need to run a shielding gas, so you can weld in a wind storm.

In a controlled environment, usually MIG or gas welding is the process of choice. If you were welding outside, IE. a bridge, flux core would be the process of choice. I have yet to see a suitcase welder full of MIG wire, they always do FCAW for structural work outside of a controlled environment, plus the flux can add desirable properties, the only advantage over SMAW is you have a endless supply of filler material vs. a stick welder, time is money.

MC