by generalair | Mar 18, 2019 | Tech Talks
Arc Stability Inverter power sources have been around for decades. As reliability now equals that of the older transformer rectifier (TR) design, they are more popular than ever. One reason is superior arc quality. TR DC output is rectified from 60 Hz AC...
by generalair | Mar 18, 2019 | Tech Talks
It’s All About Productivity Yes, the stick process still has its place in the welding world. But for structural applications where 7018 is still ubiquitous, it’s highly inefficient. 7018 is 65% efficient, meaning 35% of what you buy doesn’t go into the weld. It...
by generalair | Mar 18, 2019 | Tech Talks
A voltage sensing, or “across-the arc” wire feeder is very popular and very misunderstood, so let’s start from the beginning. What is a feeder? What is it? A feeder, usually in a suitcase or pelican box, that can run on a constant voltage (CV) power...
by generalair | Mar 15, 2019 | Tech Talks
Not All Constant Voltage is Equal Constant Voltage (CV) is the most common output for wire processes, but both Miller and Lincoln sometimes use the term loosely. The Miller Bobcat volt-amp curve (Figure 1), for example, looks nothing like a traditional CONSTANT...
by generalair | Mar 14, 2019 | News
My Experience with the Millermatic 255 On a recent pulsed MIG demo with the new Millermatic 255, I noticed a strange arc length quirk. This machine, like all Miller pulsing machines, has an arc length range of 0 to 100, 50 being nominal and the logical place to start...
