imaport Siena SN270BT Manual De Instrucciones página 55

FAULT
Premature Blade Wear
Blade Breakage
PROBABLE CAUSE
Faulty running-in of blade
Teeth positioned in the direction opposite
the cutting direction
Poor quality blade
Too fast advance
Wrong cutting speed
Defects on the material or material too
hard
insufficient lubricating refrigerant or
wrong emulsion
Faulty welding of blade
Too fast advance
wrong cutting speed
Wrong tooth pitch
Ineffective gripping of the part in the vice
Blade touching material at beginning of
cut
Remedy
REMEDY
See Material classification and blade selection
in the Blade running –in section.
Turn teeth in correct direction.
Use a superior quality blade.
Decrease advance, exerting less cutting pressure.
Adjust the braking device.
Change speed and /or type of blade. See chapter
on Material classification and blade selection
in the section Blade selection table according to
cutting and feed speed
Material surface can be oxidized or covered with
impurities making them, at the beginning of the
cut harder the blade itself
area or inclusion inside the section due to
productive agents used such as casting sand
welding wastes etc Avoid cutting these
materials or perform cutting with extreme care
cleaning and remove such impurities as quickly
as possible
Check level of liquid in the tank. Increase the flow
of lubricating coolant checking that the coolant nozzle and pipe are not blocked
emulsion percentage
The welding of blade is of utmost importance. The
meeting surfaces must perfectly match and once
they are welded they must have no inclusion or
bubbles the welded part must be perfectly
smooth and even They must evenly thick and
have no bulges that can cause dents or instant
breakage when sliding between the blade guide
pads
Decrease advance, exerting less cutting pressure.
Adjust the breaking device.
Change speed and /or type of blade.
See chapter on Material classification and blade
selection in the section Blade selection table
according to cutting and feed speed
Choose a suitable blade .See Chapter
classification and blade selection
Check the gripping of the part.
At the beginning of the cutting process
lower the saw arm before starting the blade
motor
or have hardened
Check the
Material
never