Hi everyone,
Just acquired an RTech ProMig 250 (took advantage of a open box special and saved a few extra ££)
I've mig welded a few times before with a similar equipment but using argon 85%/co2 15% mix from Air Liquide - for the moment, since I'm just welding mild steel 2 - 4mm steel on the weekends, I'm using pure CO2 for economic reasons.
The welding parameters sheet from R-Tech specifies the voltage / wire speed settings for Argon/CO2 5% mix but not pure CO2 - and I've noticed immediately that if I use those settings, I can't get a proper arc or weld (too cold, unstable arc, etc). I've been reading up on it and know that for pure CO2 I have to bump up the voltage to keep a proper arc, and I've managed to do some decent beads, but since I'm still learning, I'd like to get some decent starting points - did anyone measure the output voltage under load of the Promig 250 and has a table to share ?
Thanks !
Best regards,
Just acquired an RTech ProMig 250 (took advantage of a open box special and saved a few extra ££)
I've mig welded a few times before with a similar equipment but using argon 85%/co2 15% mix from Air Liquide - for the moment, since I'm just welding mild steel 2 - 4mm steel on the weekends, I'm using pure CO2 for economic reasons.
The welding parameters sheet from R-Tech specifies the voltage / wire speed settings for Argon/CO2 5% mix but not pure CO2 - and I've noticed immediately that if I use those settings, I can't get a proper arc or weld (too cold, unstable arc, etc). I've been reading up on it and know that for pure CO2 I have to bump up the voltage to keep a proper arc, and I've managed to do some decent beads, but since I'm still learning, I'd like to get some decent starting points - did anyone measure the output voltage under load of the Promig 250 and has a table to share ?
Thanks !
Best regards,