BANDSAW OPERATIONS - OD1646 - LESSON 2/TASK 2
(2) The band speed may be too high, causing abrasion.
Reduce the saw
band speed as needed.
(3) The saw band pitch may be too coarse.
Choose a band with a finer
pitch.
(4) Premature dulling of the saw band teeth can occur if the wrong type
of coolant is used, or if no coolant is used.
(5) The feed pressure may be too light.
Increase the feed pressure, as
required to eliminate the problem.
(6) The coolant may not be covering the saw band.
Make adjustments as
needed.
(7) The cutting rate may be too high.
(8) The material being cut may have faults, such as a heavy scale,
inclusions, or hard spots.
(9) The material analysis may be incorrect.
(10) Saw band vibration can cause premature dulling of the blade.
To
eliminate saw band vibration, perform the troubleshooting steps listed in
paragraph 5c, starting on page 80.
(11) If a chipped tooth is lodged in the cut, the saw blade will dull
prematurely.
(12) Chip welding can also cause premature dulling of the blade.
(13) If the inserts are too large for the blade width, the inserts may
hit the set teeth, causing the blade to dull prematurely.
h.
Troubleshooting the Malfunction: MOTOR RUNS BUT THE BAND DOES NOT
MOVE.
Several conditions could cause the band to remain stationary even
when the motor is running.
(1) The drive belts could be broken, or they may be off the pulleys.
Replace or adjust the belts as needed.
(2) Too much oiling of the variable pulley may have caused the pulley
(and subsequently the belts) to be coated with oil, causing the belts to
slip.
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