Here are a couple of basic gas tests. If you have the ball type flowmeter, make sure it goes to zero once the post flow stops, if not you have a big leak. Then turn off the bottle. If the pressure gauge goes down, you have a small leak.
Basic aluminum settings with foot pedal, top to bottom left to right:
Pulse switch OFF, ignore blue knobs
Amps 200, Arc force 1, AC freq. 100 Hz, Balance 30%, Switches AC, 2T, TIG (HF)
Preflow 1, Postflow 10, Upslope 0, Downslope 0, Start Amps 5, End Amps 5
Argon set to around 8-10 lpm or 16-20 cfh
Hold tungsten about .060" off the metal and hit the pedal, for 1/8" plate, you will need about half pedal to start to form a puddle. It will take a little time about 5 seconds or so in one place, before you can begin to move.
Some of your plates didn't look too clean. Try new material first if you can. If there is corrosion, or chemicals that have permeated the plate, forget about welding it. All the wire brushing in the world won't help.
Last edited by Rambozo; 07-29-2012 at 02:27 AM.
Long arc, short arc, heliarc and in-the-dark!
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