Hey All
Dont mean to lower the conversation here but I need some help with MIG welding. I have only worked with a basic Miller with a voltage dial and a wire feed dial--adjust until you have correct penetration and no splatter. (Not that I was ever good at tuning one of those either)
This new machine is giving me alot of grief and if I could pick the darn thing up, I would toss it out the window.
It is an AFTEK MV 445, hooked to a Thermal Arc 2410 (the wirefeed/gun component). The gas is 75AR/25CO2. The tech came at one point and the machine is in good working order--so I cant blame it on that. The demand pulse knob is turned up all the way--where the tech had it--but I might have switched the gas since he's been here. I am pulling the gun (should I be pushing) and the voltage is set at 85 and the wire feed is 2.5 (the knob seems very sensitive, I just breathe on it and it makes a big difference). The material is 3/16" mostly butt joints, with a few fillet joints.
The problem isnt so much penetration, it is the look of the bead. I dont have any splatter, but either I have too much build up or it is pretty flat with a ridge in the center--both ugly to my eye. How do I get a bead that looks good?
Remember I am a TIG welder so I might be expecting something that isnt possible. Pictures would be a great help--all I have found (so far) are photos of people learning to weld on their old clunkers in Britain.
Rebekah