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11.3 Tooth pitch
S (MM)
Bis 2
2 ÷ 5
5 ÷ 10
More than 10
Till 20
20 ÷ 50
11.4 Cutting and advance speed
The cutting speed (m/min) and the advance speed (cm
shadings) are limited by the development of heat close to the tips of the teeth.
The cutting speed is subordinate to the resistance of the material (R = N/mm
the dimensions of the widest section.
Too high an advance speed (= lowering of the saw frame) tends to cause the disk to deviate from the ideal
cutting path, producing non-rectilinear cuts on both the vertical and the horizontal plane.
11.5 Blade running-in
When cutting for the first time, it is good practice to rung in the tool making a series of cuts at low advance
2
speed (30-35 cm
/min on material of average dimensions with respect to the cutting capacity and solid section
of normal steel with R=410-510 N/mm
11.6 Blade structure
Most saw blades used, are made of high-speed steel (HHS) of average (HHS/Gmo5) of high Quality
(HHs/Mo5 + Co5) with treated teeth. The one mentioned last distinguishes itself from the others through
durability, resistance when cutting, no tensions in the grounding and better absorption of lubrication fluid
during cutting operation.
11.7 Blade type
They differ essentially in their constructive characteristics, such as:
-
Shape of the tooth
-
Cutting angle of the tooth
Shape of the tooth
Toothing A: Normal fine toothing
Toothing AW: Fine toothing with changing side-back
Toothing B: Normal coarse toothing with or without cut
of the chip breaker
Division
4 – 6
8
8
8
8
10
2
/min = area travelled by the teeth when removing
2
). Generously spraying the cutting area with lubricating coolant.
-27-
Form
Speed
B profile
1
C tube
1
C tube
1
C tube
1
C tube
1
C tube
1
2
), to its hardness (HRC) and to
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