This video is about tig welding aluminum on AC at 50hz and at 250hz.
there was a noticeable difference at the 2 different settings. 50hz got completed penetration and 250hz did not penetrate.
I tried to keep travel speed the same for both welds by using a motorized welding positioner turntable.
Ck worldwide mt200 ac/dc tig welder set at 90 amps, AC balance set to 6 using 3/32" (2.4mm) 2% lanthanated electrode and 4943 aluminum filler rod.
This is part 3 in a "how to tig weld aluminum" series. this video is about AC frequency adjustments and when to use different frequency settings.
Rule of thumb here is higher frequencies seem to help on thinner aluminum and lower frequencies help on thicker aluminum...especially for tig welding...
Andrew Cardin did the welding in this video while Jody handled the filming.
165 amps, arc force set to 10 using a Lincoln PowerMIG 210mp. We decided to use some leftover rods so that we show lots of restarts because being able to make a good restart is a fundamental skill... especially in overhe...
Aerospace tig welding tests almost always involve a fixture like the one shown in this video. Little details like how you place the chill bars can make a big difference.
Even though it would be rare to weld plain 304 stainless for aerospace, the tips still apply.
Typical test material for th...
