Latest - running smoothly
5083 Al plate 6mm thickness
5356 GMAW wire 1.2mm (47thou") diameter
in spray at
and about 22.8V reported.
Smooth run, no manipulation.
Looks good. Is good?
Only remaining problem is the restarts. Often burn-back to the torch
/ contactor tip. Blob of Al against contactor tip which prizes off
without harm if quick off the trigger.
Not yet worked out how to avoid that.
If I could solve that, I'd be doing rather well.
No other problems remaining
I'm left totally puzzled why Pulse is used on this 6mm thickness when
you'd be a "clean" spray anyway...
In spray doing overhead - 4F/PD - no metal ejection, not getting
Basis to insist on CV spray, as getting covered in burns using Pulse,
which was ejecting a drop of spatter per pulse.
Now finding every other position good.
I was worried the weld beads are too smooth suggesting excessive heat
input - but
- am on only about 210A to 220A (Linc.Elec. A for 9.8m/min with
1.2mm-dia wire) at just under 23V - low-end of L.E. volts range.
- any drop in V by a tiny amount or wire-feed-speed / Amps causes a
coarse unwetted bead and raspy arc - only just in spray
indicate the concern is misplaced - the beads are smooth and that is
the way it is not problem (the reference state being Pulse welded bead
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