welds too dark ...?

[FQ200turbo]

iam praticing some welds, but they always stay too dark, argon gas, the material its 2mm stainless steel, 1.6 red tung, i use two different thick fillers, diferent gas pressure, different amp, different gas delay, some fast and some slow, an help ? thanks in advance

 

[hotrodder]

Can you post a bigger pic, can't quite make out the detail

Advice is pretty much the same as the last time you asked although obviously changes to torch angle don't apply with flat plate/sheet. Running a bunch of beads on a small offcut won't help- heat quickly builds up so after a couple of welds you'll have no chance of getting clean results unless you let it cool down.

Pretty much wasting your time unless the backside is purged/protected with solar flux as the back of the weld will oxidise and (partial pen welds aside) those oxides will end up in the weldpool resulting a sluggish puddle, dark and scummy welds