struers Discotom-5 Gebrauchsanweisung Seite 26

Error
The cut-off wheel wears down too
quickly.
The cut-off wheel does not cut
through the workpiece.
The workpiece breaks when
clamped.
The sample is corroded
22
Discotom-5
Instruction Manual
Explanation
The feed speed is too high.
Insufficient cooling.
The cut-off wheel is too soft for the
task.
Incorrect choice of cut-off wheel.
Cut-off wheel worn.
The cut-off wheel gets caught in the
workpiece.
The workpiece is brittle.
The sample has been left in the
cutting chamber for too long.
Insufficient additive for cooling fluid.
Action
Reduce the feed speed.
- Check that there is enough water
in the Recirculation cooling unit.
- Check the cooling water hoses.
See Consumables section, 'Cut-off
Wheels'.
See Consumables section, 'Cut-off
Wheels'.
Replace the cut-off wheel.
Support the workpiece and clamp it
on both sides of the cut-off wheel so
that the cut stays open.
Place the workpiece between two
polystyrene plates.
Note! Always cut brittle workpieces
very carefully.
Remove the sample directly after
cutting. Leave the protection guard
open when you leave the machine.
Use Struers Additive for cooling
fluid in the cooling water at the
correct concentration. Check with a
refractometer. See Maintenance
section.