Problems and Solutions

Wear on the teeth is smooth towards the ends, and the corners of the teeth are rounded

POSSIBLE REASONS
A.) Wrong break-in procedure.
B.) Band speed is high for the material which is being cut. This situation accelerates tooth wear due to overheating of the tip of the saw tooth.
C.) A low feed rate can cause the saw tooth to rub into the material rather than enter it. It generally occurs free-cutting materials like stainless steel and tool steel.
D.) Hard materials being cut such as "fire cut edge" or abrasive materials being cut such as "fiber reinforced alloys".
E.) Insufficient cutting fluid that is used inappropriate rate or unsuitable applications.

There are high wear marks on the teeth on both sides of the saw surface.

POSSIBLE REASONS
A.) A broken, worn, or missing support guide allows the teeth to touch the side guides.
B.) Side guides are not suitable for saw width.
C.) Retracting the saw before the cut is complete.

There are high wear marks on only one side of the teeth.

POSSIBLE REASONS
A.) Worn wheel flange may allow the sides of the teeth to touch the surface of the wheel or run smoothly on the flangeless wheel.
B.) Loose or misplaced side guides
C.) The blade does not stand upright to the cut.
D.) The blade that rubs against the cutting surface during (m/min&mm/min) the return cut of the machine head.
E.) Teeth rubbing against machine parts such as swarf brush set, guard.

Gear fractures at the corners and ends (spaced type) of the teeth

$Gear fractures at the corners and ends (spaced type) of the teeth$

Gear fractures at the corners and ends (spaced type) of the teeth

POSSIBLE REASONS
A.) Wrong break-in procedure.
B.) Blade selection that is not suitable for application.
C.) Handling damage due to improper opening of the folded saw.(curve saw)
D.) Improper placement or compression of material.
E.) Excessive feed rate or feed pressure.
F.) Striking hard spots or dross in the material.

Color change at the tips of the teeth due to excessive frictional heat during use

POSSIBLE REASONS
A.) Insufficient supply of cutting fluid due to improper fluid ratio and/or improper application.
B. Extreme saw speed
C.) Improper feeding rate.
D.) Reverse placement of the saw.

Welding of swarfs to the tip and surface of the teeth due to high heat or pressure during cutting

POSSIBLE REASONS
A.) Insufficient supply of cutting fluid due to improper fluid ratio and/or improper application.
B.) Worn, lost or misplaced swarf brush.
C.) Improper saw speed.
D.) Improper feding rate.

Color change at the tips of the teeth due to excessive frictional heat during use

POSSIBLE REASONS
A.) Improper or insufficient break-in procedure.
B.) Worn, lost or misplaced swarf brush.
C.) Excessive feed rate or feed pressure.
D.) Vibration or movement of the cut material.
E.) The speed of the teeth is not suitable for the size of the lateral surface of the material being cut.
F.) Improper placement of the cut material.
G.) Insufficient supply of cutting fluid due to improper fluid ratio and/or improper application.
H.) Hard spots in the cut material.
I.) Saw speed is slow for the material being cut.

Filling under the teeth with the cut material

POSSIBLE REASONS
A.) The speed of the teeth is very sensitive, insufficient space between teeth.
B.) Large swarfs occur due to overfeed rate.
C.) Worn, lost or misplaced swarf brush.
D.) Insufficient supply of cutting fluid due to improper fluid ratio and/or improper application.

There are marks of excessive wear on both sides of the saw.

POSSIBLE REASONS
A.) Swarfed or broken side guides.
B.) Side guide adjustments are made too tight.
C.) Insufficient cutting fluid along side guides.
D.) Insufficient supply of cutting fluid due to improper fluid ratio and/or improper application.

Wear marks between teeth on the front surface of the saw and the rear surface of the reverse side of the saw

POSSIBLE REASONS
A.) Loose side guides.
B.) Swarfed, worn or defective side guides.
C) The saw is rubbing against a part of the machine.
D.) Side guides reached their maximum capacity.
E.) Accumulation of swarfs in side guides.

Saw breaking between teeth. Breaking start.

POSSIBLE REASONS
A.) Overloading the support guide.
B.) Inappropriate saw tightness.
C.) Side guides reached their maximum capacity.
D.) Improper beam bar settings.
E.) Side guide settings are too tight.
F.) Extremely worn teeth.

A fracture occurs between the teeth and then it proceeds at an angle towards the back of the saw.

$A fracture occurs between the teeth and then it proceeds at an angle towards the back of the saw.$

A fracture occurs between the teeth and then it proceeds at an angle towards the back of the saw.

POSSIBLE REASONS
A.) Excessive buckling type pressure has occurred.
B.) Excessive buckling from the saw wheel to the guides due to the end of the capacity of the guide arms.
C.) Widening of the guide arms when cutting small lateral surfaces (very large surface)
D.) Excessive preloading of the support guide.

The break started from the back of the saw. The beginning of the fracture is understood from the flat area above the fracture area.

$The break started from the back of the saw. The beginning of the fracture is understood from the flat area above the fracture area.$

The break started from the back of the saw. The beginning of the fracture is understood from the flat area above the fracture area.

POSSIBLE REASONS
A.) Excessive preloading of the support guide causes the rear Ridge to harden and eventually break.
B.) Overfeed rate.
C.) Improper saw tracking (trace), friction of the rear tread on the wheel flange
D) Worn or damaged support guide.

Heavy rear tread wear will cause a polished appearance or abnormal crevices on the saw surface. Corners can also be crushed.

POSSIBLE REASONS
A.) Overfeeding rate.
B.) Extreme support guide prelaod.
C.) Improper saw tracking (trace), friction of the rear tread on the wheel flange.
D.) Worn or damaged support guide.

To see if the saw is breaking at the weld, look at the edges of the break to see if there are any grinding marks from the weld finish.

POSSIBLE REASONS
A.) All factors that cause body breakage can cause breakage at the weld site.
(See Observation No: 11, 12 ,13)

On its outer surface,

POSSIBLE REASONS
A.) Side guides too tight - friction close to the channel.
B.) Extreme “preloading” - Progress of the saw by overloading the rear support guides
C.) Worn band wheels cause unstable tension.
D.) Overfeed rate.
E.) Guide arms reached their maximum capacity.
F.) Improper saw tracking (trace), friction of the rear tread on the wheel flange.

On its outer surface,

POSSIBLE REASONS
A.) Side guides too tight – back surface friction.
B.) Worn band wheels causes unstable tension.
C.) The guide arms are opened very separately from each other.
D.) Overfeed rate.

When the edges of the loop were held, the saw lost its normal shape. This indicates that the smoothness has changed during use.

POSSIBLE REASONS
A.) Excessive saw tightness.
B.) All conditions that cause the saw to be "long" (#16) or "short" (#17) on the outside.
C.) Narrow diameter material cutting.

If a broken saw bends from one end to the other when it stands on a flat surface, this indicates that the smoothness changes during use.

POSSIBLE REASONS
A.) Excessive saw tightness.
B.) All conditions that cause the saw to be "long" (#16) or "short" (#17) on the outside.
C.) Narrow diameter material cutting.

Excessive wear on small channels only indicates insufficient channel capacity compared to the swarfs formed.

POSSIBLE REASONS
A.) Overfeed rate.
B.) Speed of band is too slow.
C.) Use of less spaced teeth according to the size of the cut material.

SSS