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B.
Watering :
Except
for certain
applications, the
diamond sawing
should be carried
out with abundant
watering. The water
pressure is of
little importance
so long as the flow
is sufficient.
The
values tabulated
apply to a
conventional watering
system (I). The
Golconda
system
(II) allows a
better water
distribution as well
as
a flow
reduction from 0.9 to
0.7 as compared with
the tabulated
figures. These are
determined
by taking into
account such factors
as type of material,
cut
and feed
speed.
The
segment speed should
be selected according
to hardness and
abrasiveness
of the material to be
cut; together with
the feed speed it
affects the cutting
speed and the tool
life.
It
is therefore
important to suit the
peripheral speed to
the material to be
sawn in
Table
C.
Peripheral Speed :
The
segment speed
should be selected
according to
hardness and
abrasiveness of the
material to be cut;
together with the
feed speed it
affects the cutting
speed and the tool
life.
It
is therefore
important to suit
the peripheral
speed to the
material to be
sawn.
Recommended
Peripheral speeds
in m/s :
| Materials |
Standard
peripheral
apeed |
High
Speed
Machine
power from |
| 100
to 130 HP |
120
TO 160 HP |
| Quartziferous
granites |
25
to 30 |
80
80
|
90
90
|
| Low
quartziferous
granites |
30
to
40 |
| Marbles |
40
to 50 |
| Travertines |
45
to
60 |
| Sandstones |
40
to
65 |
D.
Machine power
The
power should be
determined by the
blade
diameter and
the type of material
cut
Recommended
power : kw = hp x
0.736
E.
Choice of Blades :
We
particularly
recommend that the
blade used should be
suited to material to
be cut. Each material
or group of materials
has its own
particular hardness
and abrasive
properties.
The
type of blades is
determined by these
two factors. It is
easy to foresee
therefore that a
change of material
can be fatal to the
tool life.
A
blade intended for
sawing marble, for
example, will be
completely worn after
sawing a few meters
of soft sdandstone,
which is softer but
more abrasive than
marble.
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