by generalair | Mar 19, 2019 | Tech Talks
A High Speed Option to Ultra Slow TIG Traditionally, GTAW lends itself well to the welding of thin gauge aluminum. On AC polarity, the operator easily strikes a balance between oxide surface cleaning and penetration. Second, the operator controls heat input...
by generalair | Mar 18, 2019 | Tech Talks
The Future of Submerged Arc Welding In Colorado, constant voltage (CV) DC polarity is still used in most submerged arc (sub-arc) applications. It is still used, in large part, because the systems are old and robust, living long lives. Reverse (DC+) polarity is most...
by generalair | Mar 18, 2019 | Tech Talks
A Better Way to MIG Weld Sheet Metal Power Mode, a Lincoln Electric GMAW technology, has been around since 2001. It is on all the PowerWave series machines. For instance, it is on the Invertec V350 (with advanced pulse panel) and the more affordable PowerMIG 350 MP....
by generalair | Mar 18, 2019 | Tech Talks
X-Ray Quality Welds, Fast For some time, the preferred method of open root pipe welding has been a cellulosic stick electrode (6010) for the root pass or a low hydrogen rod (7018) on the fill/cap passes. However, stick welding pipe has notoriously low arc-on-time and...
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...
