Mig welding mild steel using 100% argon shielding gas
Mig welding mild steel using 100% argon shielding gas
(OP)
Is it ok to use 100% argon gas to weld mild steel plates ?
Plate thickness is 1/4" to 3/4".
Currently we have no mixed shielding gas such as 80/20.
We are using solid wire .
We noticed during fit up that some of the tack welds did
not hold.
Is there a proceedure to follow that will allow us to
maintain structural integrity, while using this
combination of parent metal/ gas / & wire ?
Plate thickness is 1/4" to 3/4".
Currently we have no mixed shielding gas such as 80/20.
We are using solid wire .
We noticed during fit up that some of the tack welds did
not hold.
Is there a proceedure to follow that will allow us to
maintain structural integrity, while using this
combination of parent metal/ gas / & wire ?





RE: Mig welding mild steel using 100% argon shielding gas
Argon + 1% O2 can be used for both flat and horizontal Fillet welds - Spray Transfer mode.
Argon + 2% O2 can be used for both flat and horizontal Fillet welds - Spray Transfer mode.
Argon + 8% O2 can be used for both flat and horizontal Fillet welds - Spray Transfer mode and All position - Short Circuit Transfer Mode.
Argon + 1% O2 can be used for both flat and horizontal Fillet welds - Spray Transfer mode.
75% Argon + 25% CO2 most commonly used for short-circuit transfer - all position
100% CO2 can be used for both flat and horizontal Fillet welds - Globular Transfer mode and all position - Short Circuit Transfer mode.
Here are a few links that might be helpful
http://www.esabna.com/EUWeb/MIG_handbook/592mig1_1.htm
http://www.weldreality.com
RE: Mig welding mild steel using 100% argon shielding gas
RE: Mig welding mild steel using 100% argon shielding gas