Polishing with the carbon fibre brush
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20
Polishing with the carbon fibre brush
20.1
Preparation
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Prepare your workplace. Provide the necessary compo-
nents at the workplace:
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Cleaning device
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PTFE handle with carbon fibre brush
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Ground clamp
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Polisher cleaning electrolyte
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Distilled water for rinsing
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Paper towels
20.2
Workflow
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Switch the machine on.
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The power switch lights up.
The green control lamp lights up as soon as the mains
switch is switched on.
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Set the main switch to "Polish".
Never switch the device ON / OFF several times
in quick succession using the mains switch.
Switching on/off too quickly in succession can
damage the electronics in the unit. Wait at least
30 seconds after switching off the unit before
switching it on again.
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Dip the carbon fibre brush into the electrolyte.
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Pull the carbon fibre brush out again and let excess elec-
trolyte drip off.
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Place the brush vertically.
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Now lightly brush over the weld.
Never press the carbon fibre brush too hard.
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Let the brush glide over the workpiece in a circular (1-2 cm
diameter) motion.
Polishing takes more time than cleaning. (10 µm per min-
ute and cm²).
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Let the brush glide over the surface until you are satisfied
with the result.
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Dip the brush regularly into the electrolyte and rinse the
workpiece with demineralised water to prevent the com-
ponents from overheating!
Maximum polishing effect is achieved when the carbon
fibres are perpendicular to the workpiece surface.
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Only in this way can the arcs be created at the carbon fibre
tips that are crucial for the polishing process.
Depending on the nature of the weld, you may have to
brush over it several times to achieve the desired cleaning
effect.
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Dip the carbon fibre brush regularly into the container.
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Move the carbon fibre brush back and forth in the con-
tainer 2-3 times and squeeze out the fibres at the bottom.
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Dissolved oxides are removed.
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The carbon fibres can absorb fresh electrolyte.
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They achieve maximum cooling of the electrode and in-
crease the service life.
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Spray the surface with ultra-pure water immediately after
polishing.
It is best to use a spray bottle.
Use distilled or demineralised water. This way you avoid
unsightly white limescale edges.
The water hardness must be less than 10° dH.
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The abruptly evaporating water carries away the dissolved
impurities and electrolyte residues.
Alternatively, Neutralit can also be used.
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Dry the surface.
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Use a clean paper towel each time.
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This gives you a stain-free, dry surface.
After work:
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Carefully wipe off the excess electrolyte on the brush at
the edge of the container.
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Rinse the mass tongs with water.
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Close the wide-mouth container.
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Put the protective cap over the brush.
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Store all components in the transport box.
For more information on improving the polishing result, see
chapter “21 Tips for improving the cleaning and polishing re-
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