71m and inductance setting

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we got a new mig at the shop a millermatic 350p,with a 20 foot whip. so i figured i'd try her out and i must say this machine runs way too hot.    i grabbed a piece of quater inch plate and set the machine at around 24 v and 210 to 220 for the wire speed and nothing but a flat to concave bead nothing seemed to work i even cranked the wire but it just rolled.I noticed the induction setting defaults at 30 should it be a little higher lower. I never really played with arc control settings before!
Reply:What size wire? What gas are you running?What is your gas flow rate?What polarity?(71m is a reverse polarity wire).The manual for 305p shows the inductance should be 20-40 for steel using 75-25 argon co2 mix gas. Also the manual shows to adjust machine to 19.0 volts and 220 wire speed for .045 and 19.5 volts and 330 wire speed for .035I've personally have ran .045 at 300 inches a minute and depending on power source 24 -26 volts using an LN-25.Last edited by Dipper Welder64; 01-22-2007 at 06:28 PM.
Reply:sorry forgot that .045
Reply:the settings in the manual are way off....i am running c25 up around 30-35 cfh.i am quiet new to flux core mostly a hard wire guy, i just like the profile that your can get from hard wire.I have a book from ed craig and here are some settings he states in the book, now i know every machine is different but it has to be a good starting point!Vertical up25 volts / 210 wfs26volts / 280 wfsFlat and horizontal26volts/280wfs28/35029/42028/49030/56030/63031/700setting are for 15-25% c02
Reply:If You can try running 75-25 argon/co2 mix, it will have better weld characteristics and less splatter.
Reply:is that not what c25 is....lol
Reply:The distributor here calls it 75-25
Reply:having a background in hard wire i always listen for a sizzin sound but i find that the 71 m has more of a kind of squeaking sound is that what i wanna hear?
Reply:For me it's totally different from mig, its alot smoother because your sprayin. Did you check you polarity?
Reply:So, what did you figure out with the inductance setting?
Reply:lower inductance less heat high more heat.works well at around 85 where i run for aluminum.