Try going for a wire of 023 inches when welding sheet metal.
How to mig weld sheet metal flux core.
This includes a flux cored welder welding gloves a welding mask safety goggles slag chipping hammer and a spool of flux core wire step 3 load the wire into the machine by following the proper instructions that came with your machine.
So if you are welding 12 gauge mild steel with a thickness of 0 100 you would set the machine at 100 amps.
The steel must be free from any rust paint or other contaminants.
Tig welding sheet metal forget the larger 1 8 inch tungsten electrode and use a smaller one.
Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal.
Before you start welding you will need to make sure you have all the tools required.
To weld sheet metal with solid wires use electrode positive ep or reverse polarity.
The settings for flux core wire and non ferrous metals will be completely different.
However flux cored arc welding can also be performed without shielding gas.
When welding mild steel a good rule of thumb is to set the amperage level at 1 amp for every 0 001 of thickness.
Step 1 cut the steel to size.
Short bursts or tacks will help.
Although fcaw is known for being a process that can get away with welding dirty metal it is.
Clean it with a carbon steel wire brush.
Flux core is a welding process which uses a tubular wired electrode with a flux filled encore.
While wire feed welding sheet metal go for short bursts of welding instead of a going on a long bead.
Https goo gl frdnss we continue to get tons of questions on some of the basics of flux cored welding.
It is also addressed as flux cored arc welding fcaw.
You can use a stainless brush to clean with if that is all you have step 2 gather all your equipment.
Metal thickness amperage settings.
For sheet metal i use ine welding wire and it is just as good as their flux cored wire if you want you can grab one here.