CUTTING EDGE
MARVEL 8 MARK III
© MARVEL MFG. CO., INC. MANUAL 8SDN10871N (04/08)
E-1
Metal sawing is influenced by several elements
or combinations of elements which are always
present during the cutting cycle. Some of those
elements are:
−
Machinability of material
−
Condition of material (surface condition
and hardness
−
Size and shape of material (cross
section)
−
Blade condition
−
Blade type
−
Blade speed and feed pressure
−
Type and condition of coolant
Because so many factors affect the performance
of a cut, the information given in cutting charts
and guides should be used as a starting point
when setting feed pressure and blade speeds.
FEED PRESSURE
Generally, the feed pressure increases as the
material size or cross section increases.
CUTTING RATE
The actual cutting rate achieved depends on the
feed pressure, blade speed, blade type,
condition, etc.
If the cutting rate is too low, the saw chips will
have a powdery appearance. If the cutting rate is
too high, the chips will be thick and cause the
teeth to strip. The proper cutting rate will
produce a clean, curled chip.
BLADE SPEED
The blade speed is expressed in surface feet per
minute (SFPM). To obtain recommended blade
speeds for a particular material consult
information supplied by the blade manufacturer.
For this machine, consult information for a
(1.25") blade.
NOTE: The following page may be used to
record your most commonly cut materials and
their appropriate feed pressure and blade
speed.
