29
tUngsten tip preperation
tUngsten eXtension
tUngsten grinding
correct torch and rod positioning
dc
standard parts
gas lens parts
general purpose 3 X dia
general purpose 3 X dia
MaX: 6 X dia. (in draft-free areas)
-grind longitudinally (never radially)
-truncate (blunt) end
-diameter of fl at spot determines amperage capacity
the included angle determines weld bead
shape and size. generally, as the included
angle increases, penetration increases and
bead width decreases.
Use a medium (60 grit or
fi ner) aluminum oxide wheel.
taper length: 2-3 X dia
flat: 1/4 to 1/2 X dia
typical tip geometry
for inverter
typical tip geometry
for transformer
Ball tip by arcing on non-ferrous metal at low current dcrp (ep) then slowly
increase current to form the desired ball diameter. return setting to ac.
Maximum Ball size: 1 X dia
ac
take special note that the fi ller rod is in the
shielding gas during the welding process.
filler rod
75°
15°
shield gas
vertical
15°-30°
travel direction
