255EXT Aluminum Tig Pulse Settiing Comparison/Suggestion

[travis1693]

Ultra high hertz on AC or on Pulse is just unpleasant, and the weld turns really sluggish. I like rapid wet in. When you turn up the pulse and the AC frequency, you begin to get a less progressive puddle. Now on thin material, that is good. But I like a pulse set around 90 to 100hz personally. For Pulse, no more than 150Hz is really good. 30-50% setting on balance (pulse time on) and 50 to 75% on pulse amps. That makes the most sense to me for good travel speed.

Did you get to talk with the guys today? One of them had to leave early...stomach virus or something. And it was a busy day when I talked with them around lunch time.

Yes I did and got everything figured out and running like a champ! (It was more operator error than anything) I was not aware that on advanced A/C Pulse that the amps were ratio'd out as I thought the welding amps were determined by the main amperage and only the background amps were controlled by the pulse settings. So basically speaking I had too much of a spread between the settings to achieve the desired results. Took your suggestions and dialed in from there and now getting consistent results every time.

I settled in on:
155 AMPS, 60% pulse time on, 30% Pulse amps (background),.8 PPS at 140 Hertz and just a little slower than 1/8" P/S travel speed.

One wouldn't think that 155 amps would be enough for 3/16 aluminum but based upon travel speed that works for me to keep up with it works very well. One thing that I forget to mention in my set up is I do run 75%argon/25%helium pre-mix from my supplier and it just makes EVERYTHING with aluminum go better IMO, cost a little bit more but I think its worth it. You were spot on about the HZ, by dialing it back a bit really helped keep the puddle out ahead!