In MIG setting on a 350P, there is no Amp setting. Just Voltage and wire feed speed. I do have "Arc Control", which is a value from 0-99, but am not clear on what it does for me.
One likely problem is my grounding. I didn't think to do it like I normally do, which is clamp a vise grip to the part and connect the ground clamp to the vise grip. I'll have to remember to do that when I get back out there.
Chris
Wire feed speed/IPM and amperage are the same and as I stated earlier, if the amps were measured with a meter or you had a built in meter you (or the person watching the readout) could see an increase or decrease as stickout changes. ....and, I had to watch a youtube video on the 350P setup in order to give (attempt) a lucid response. If I believe everything I hear I don't need an employee, I just buy the welder.
If I understood correctly, when going through the setup you have the option of viewing wire feed speed or amperage. This would be done while in set up, and you would change between the two settings by turning the knob on the right. When you are out of setup mode the left knob controls voltage and the right knob controls the amperage (wfs). The following link has some helpful information but holding true to most information regarding welding theory, the arc control/inductance setting explanation is lacking. There is a direct correlation between volts/amps and penetration/fusion. i.e. The appearance of the weld bead with or without the inductance feature, which would be accomplished with voltage when welding within the parameters set for the filler metal.
https://www.millerwelds.com/resources/welding-resources/basic-electricity
My interpretation of the inductance setting which is used in the short arc mode, controls the amperage in the short arc process. Keeping in mind that voltage is fixed, the inductance setting helps stabilize the amperage used in the pinching force of the short arc cycle to squeeze the molten metal off the end of the filler wire being fed. The cycle is occuring at at rate of, or up to 200 times a second. That's a lot of keystroke to explain something that really doesn't pertain to the FCAW process that we're discussing with the dual-shield wire, but **I had to know** what the arc control setting is supposed to do.
The short arc metal transfer process in GMAW (MIG) welding isn't deep penetrating, so the emphasis is placed on "wetting" better know as fusion, better know as how well is my weld bead sticking to the base metal. The same isn't true for FCAW or solid wire in the spray mode transfer in regard to penetration and lack of fusion usually isn't a common weld defect, so a lot of concern isn't given.
Back to the issues running the ".035 ESAB Dual Shield II 70 Ultra, E71T-1/T-1M/T 12M". Just dial back the wire feed speed and if you wish set the arc control on 40-50 ( I don't think it's in play with this process) and you will see things improve. After that it's just some fine tuning. If you wish to play with the .062" wire, I think your machine has what it takes but I don't see any reason to change out feed rolls, liner and contact tips just to play with that much fire.
Now I need to get back to my shop drawings. Keep us posted on the progress.
