Induction VS arc force

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Does anyone know what the difference is between inductance control and arc force control? Are they just two terms for the same thing? I know that inductance control allows the operator to adjust the volt-amp curve to fit a particular need but am not sure about 'arc force' control.
Reply:Slope controls the volt amp curv, inductance conterols the rate of current rise of the short circuit current and the fluiddity of the puddle.  arc force is connected with the vot-amp curv.  John  Arc Force gives more penetration.SMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:I can explain in use terms.  Turn the arc force down and the stick weld is smooth as butter.  The arc in gentle and quiet. The arc also wants to wander.  The weld is flatter and cools slower so the weld looks smoother.  Bead is flat, smooth and wide with low arc force.  Low arc force welding vertical up doesn't work too well, the bead wants to sag because it cools slower and the arc wants to wander.  So more helps in that case.High arc force makes the arc want to dig into the base metal more.  The arc is more forceful and direct or "crisp".  The puddle cools faster, so the bead is taller and narrower.  The sound has more POPs in it and more spatter.  Dry 7108 with low arc force is a dream to weld with.  Damp 7018 will do nothing but stick to the base unless I turn the arc force up.  6010 likes more arc force than 7018.High arc force beads are more rippled, deeper penetrating and have more spatter.  Inductance is the time it takes for the voltage to return to welding volts after a short in MIG welding.  Changes in inductance can make up for changes in gas, or size of wire being used.  Lots of inductance for straight C02, much less for C/25.  If you use lots of inductance with C/25, it will "double short" or burn off too much of the wire at once and make it hard to control the puddle.  Penetration will decrease with more inductance and C/25.Do some experimenting on your own.  Start in the middle.  Run a bead or two.  Turn it all the way up and try again.  Turn it all the way down and see how that works.  You will soon find out there is no ultimate setting, it changes with each job, size of rod and position of weld.With the MIG, get he optimum wire speed and volts.  Fine tune with the inductance.  Always start in the middle and go from there.  My machine in the shop goes from -10 to +10.   AG8 runs best at +2, Co2 runs best at +10.   C/25 works pretty good at Zero. On both of my machines, the inductance knob and arc force knob are the same one, they change when I change processes.I asked the same question when I first joined this board.David Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Where Inductance does the most good is when mig welding stainless steel. To test this compare welding at 0 against 8 or 10, the higher inductance helps wet the puddle out, while at 0 the arc becomes sluggish and does not tie in at the toes very well, I'm assuming you have an Inverter if it has Inductance and Arc force controls, on some machines the arc force is shown as a "Dig" control, what the dig does in stick mode is sense a short circuit at the start of the arc, (ever stick a 7018 to the plate?) and ramp up the amperage for a split second to clear this short.
Reply:Thanks guys!    From what I am reading, my understanding is this: induction and arc force are essentially the same thing, except called differently for the two process of MIG and stick. As you turn up the dial, the volt amp curve slope changes and amperage responds faster and higher when the machine senses a drop in voltage. In GMAW short circuit it results in a higher 'pinching effect' and more wire burned of per short. In stick the higher setting results easier striking, more penetration and a rougher appearance weld.Am I on track?
Reply:In regards to stick welding, I've never noticed that arc force makes it easier to strike the arc.  A 'hot start' setting on the welder helps with this.  Arc force will reduce the likelihood of sticking the rod during welding; or in other words, it will help keep the arc if the distance between the work and electrode gets too small.On the downside, I've noticed while welding thinner material that arc force can also result in large holes in the base metal.  If it's set too high, and kicks in, the surge in current provided can make it difficult to maintain the proper size puddle or keyhole.-Dave Originally Posted by jpurdyThanks guys!    From what I am reading, my understanding is this: induction and arc force are essentially the same thing, except called differently for the two process of MIG and stick. As you turn up the dial, the volt amp curve slope changes and amperage responds faster and higher when the machine senses a drop in voltage. In GMAW short circuit it results in a higher 'pinching effect' and more wire burned of per short. In stick the higher setting results easier striking, more penetration and a rougher appearance weld.Am I on track?
Reply:Just my opinion,  You need to go to AWS's web site or get some books from them and read the definitions of Slope, Inductance and Arc force.  You are on the rong track.  JohnSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:Plain and simple Inductance is arc on time. --Gol'
Reply:Good info on effect of inductance in short arc MIG.http://content.lincolnelectric.com/p...ture/c4200.pdf, http://www.millerwelds.com/interests...rs/pdf/MIG.pdf,