Arc-Zone Sharpie A-PTGK-DX Betriebshandbuch - Seite 6
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Selecting the Grind Angle
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Follow your equipment supplier's suggested grind angle specifications or perform tests to
determine the optimal electrode preparation for your application .
Refer to the chart below for general guidelines .
15°
Sharper Electrode (Narrow Angle)
Wider weld bead
Easier arc starting
Less amperage
Grinding the Electrode Taper
With the correct collet in the angle disc, insert the tungsten electrode into the collet
(SEE FIGURE-1) and rotate for one 360º rotation while exerting consistent pressure so the
tungsten is contacting the grinding wheel . Repeat until tungsten reaches desired taper .
Release pressure from grinding wheel after each rotation of the
tungsten electrode .
Releasing in this way allows wheel to cool and greatly extends
wheel life .
Changing the Diameter of the Tungsten
Identify the proper size collet from the two stored in the top of the
head assembly . Your grinder was shippped from the factory with
1/16" (1 .6mm), 3/32" (2 .4mm) and 1/8" (3 .2mm) collets . A .040"
(1 .0mm) collet is available as an option .
Remove collet using wrench supplied with your grinder, and
switch with the desired collet in the angle disc assembly .
Adjustable Collet Instructions
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Adjusting the Grinder Angle ( on DX Model only )
Loosen set screw to allow the brass collet holder to pivot for
grinding different taper angles . ( SEE FIGURE-2 )
Once desired angle is located, tighten set screw in the collet
holder and grind tungsten to desired taper .
When the Outer Diameter of the Wheel is Worn
Loosen set screw and turn the brass screw to advance the collet
(and corresponding tungsten contact point) toward the center of
the wheel . ( SEE FIGURE-2 )
4 / 12
35°
45°
Improved arc stability
Less weld penetration
Shorter electrode life
60°
90°
Blunter Electrode (Wider Angle)
Narrower weld bead
Harder arc starting
More amperage
120°
180°
Increased potential for arc wander
Better weld penetration
Longer electrode life
FIGURE-1
FIGURE-2
2-Pivot
the brass
collet
holder
to adjust
the grind
angle
1-Loosen
set screw
on the
brass
adjuster
shaft