Struers Unitom-2 Manuel D'instructions page 22

Error
Cutting Problems
Discoloration or burning of the
workpiece.
Unwanted burrs.
The cutting quality differs.
The cut bends to a side.
The cut-off wheel breaks.
18
Unitom-2
Instruction Manual
Explanation
The hardness of the cut-off wheel is
inappropriate for the hardness /
dimensions of the workpiece.
Inadequate cooling.
The force on the cut-off-wheel is too
high.
Wheel too hard.
Too high force on the cut-off wheel
near the end of the operation.
Lack of support.
Cooling water hose clogged.
Insufficient cooling water.
The force on the cut-off-wheel is too
high.
Incorrect mounting of the cut-off
wheel.
Incorrect clamping of the workpiece.
Not enough support of the
workpiece.
Wheel too hard.
The force on the cut-off-wheel is too
high.
Inadequate cooling.
Action
See Section Consumables, Cut-off
Wheels.
- Check that there is enough water
in the recirculation cooling unit.
- Check the cooling water hoses.
Apply a lower force on the cut-off
wheel.
See Section Consumables, Cut-off
Wheels.
Reduce the cutting force near the
end of the operation.
Support with two cutting tables
(optional).
Clean the cooling water hose and
the cooling tube. Check the water
flow by turning the cooling valve to
cleaning position.
Refill tank with water. Remember
Struers Additive for cooling fluid.
Apply a lower force on the cut-off
wheel.
- Check that the hole has the
correct diameter.
- Check cardboard washer on both
sides of the cut-off wheel. The nut
must be tightened properly.
Make sure that only one of the
quick-clamping devices is tight. The
other device (optional) should only
press lightly.
Use support tools (optional) if the
geometry of the workpiece makes
support necessary.
Support with two cutting tables
(optional).
See Section Consumables, Cut-off
Wheels.
Apply a lower force on the cut-off
wheel.
- Check that there is enough water
in the recirculation cooling unit.
- Check the cooling water hoses.