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Troubleshooting, Blade and cutting problems, Troubleshooting – blade and cutting problems – Wilton FK350-4 User Manual

Page 18

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18

Troubleshooting

Troubleshooting – Blade and Cutting Problems

Problem Probable

Cause

Solution

Incorrect lubricant/coolant fluid

Ensure proper coolant flow.

Material too hard

Check the cutting speed, feed speed and air pressure
parameters and the type of blade you are using.

Disc not worn--in correctly

With a new blade it is necessary to start cutting at half
feeding speed. After the wearing--in period (a cutting
surface of about 300 cm2 for hard materials and about
1000 cm2 for soft materials) the cutting and feed
speeds can be brought up to normal values

Disc with excessively fine
tooth pitch

The swarf wedges into the bottom of the teeth causing
excessive pressure on the teeth themselves

New blade inserted in a
partially completed cut

The surface of the cut may have undergone work
hardening. When starting work again, use a lower
cutting speed and head feed speed. A tooth from the
old blade may be left in the cut: check and remove
before starting work again.

Teeth breaking

Work piece not clamped firmly
in place

Any movement of the work piece during cutting can
cause broken teeth: check the vise, jaws and clamping
pressure.

Feed speed too slow

The blade runs over the material without removing it:
increase feed speed.

Cutting pressure too high

Reduce cutting pressure.

Blade speed too high

The teeth slide over the material without cutting it:
reduce the blade speed.

Insufficient coolant

Check the coolant level and clean coolant lines and
nozzles.

Incorrect fluid concentration

Check and use the correct concentration.

Rapid tooth wear

Material defective

The materials may present altered zones either on the
surface, such as oxides or sand, or in section, such as
under-cooled inclusions. These zones, which are
much harder than the blade, cause the teeth to break:
discard or clean these materials.

Feed speed too high

Reduce blade speed.

Teeth in contact with material
before starting the cut

Always check the position of the blade before starting
a new job.

Broken blade

Insufficient coolant

Check the coolant level and clean coolant lines and
nozzles.

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