Carl Wilson
Member
- Messages
- 1,957
- Location
- Moray
Hi All,
Ok. I'm not by any means a welder but have done a bit of tig. My friend came over with a couple of mild steel brackets to weld.
Steel was about 1/16th of an inch thick.
When I started the arc everything was OK then after the up slope peaked the pool and arc became incredibly bright, so much so that I couldn't see what I was doing, even with my helmet darkness level at max. Tungsten was getting really hot and balling up, and every so often small sparks were being shed, not clear if from the pool or the torch.
I managed to get the job done but not seen anything like this before. At some points it was like the polarity was wrong, but I had it in DCEN.
About 12 lpm argon flow, pureshield argon, number 7 cup, 2.5 mm tungsten. Lanthanated.
So what was the brightness, sparking and overheating tungsten all about?
Ok. I'm not by any means a welder but have done a bit of tig. My friend came over with a couple of mild steel brackets to weld.
Steel was about 1/16th of an inch thick.
When I started the arc everything was OK then after the up slope peaked the pool and arc became incredibly bright, so much so that I couldn't see what I was doing, even with my helmet darkness level at max. Tungsten was getting really hot and balling up, and every so often small sparks were being shed, not clear if from the pool or the torch.
I managed to get the job done but not seen anything like this before. At some points it was like the polarity was wrong, but I had it in DCEN.
About 12 lpm argon flow, pureshield argon, number 7 cup, 2.5 mm tungsten. Lanthanated.
So what was the brightness, sparking and overheating tungsten all about?