Miller CST 280 Manual do Proprietário - Página 37
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7-3. Preparing Tungsten For AC Or DC Electrode Negative (DCEN) Welding
1
2-1/2 Times
Electrode Diameter
4
Ideal Tungsten Preparation − Stable Arc
4
Wrong Tungsten Preparation − Wandering Arc
2
1
2
3
1
2
3
1
Tungsten Electrode
2
Tapered End
Grind end of tungsten on fine grit,
hard abrasive wheel before weld-
ing. Do not use wheel for other jobs
or tungsten can become contami-
nated causing lower weld quality.
1
Stable Arc
2
Flat
Diameter of this flat determines
amperage capacity.
3
Grinding Wheel
Grinding wheel should be dedi-
cated to grinding tungsten only.
4
Straight Ground
1
Arc Wander
2
Point
3
Grinding Wheel
Grinding wheel should be dedi-
cated to grinding tungsten only.
4
Radial Ground
Ref. S-0161 / Ref. S-0162
OM-217 655 Page 33