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Guide
for cutting |
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A: Rotate the saw blade without
cutting: Especially when first-
time using the new saw blade, the
blade should be rotated without
cutting for over 30 minutes, and
should be used with water in summer
hot weather . The purpose is to
eliminate the influence of segment
to the saw blank during the welding
course, and keep high internal quality
memory when the saw blades is runing
under high speed.
B: The stone block should not be
smaller than 0.5m3, and which should
be settled steadily in symmetrical
position to avoid any vibration.
C: According to the length, width,
and height of stone block to adjust
the runing switch, the rise and
fall of saw blade or the block vehicle
should be in valid range. Before
the cutting the distance between
segment and the highest position
of stone block should be 10-20mm.
After the cutting the distance between
the segment and the bottom of stone
block should be 20-40mm. When the
cutting of saw blade is changed
from left to right or right to left,
the blade should be out of stone
block completely, the distance should
be at least 150-200mm to avoid the
strike of blade to the block.
D: The saw blade can only cut the
block after steady rotation, when
the segment is touching the stone
block the saw blade can not be loaded
to run(rotate), also when the blade
is under cutting in the block the
ratation can not be stopped until
the blade is out of block completely.
E: Under cutting if find the stone
block is vibrating, please stop
the cutting immediately, only when
the block is settled steadily the
cutting can be continued. Under
cutting the stone block can not
be moved freely.
F: Under cutting if find any unnormal
low cutting speed or the blade is
nipped, it is possible that the
strap is sliding or the compaction
nuts become less crowded or the
cutting depth is too much or the
feed speed is too fast, which concerned
should be adjusted in time.
G: The leaner speed should be adapted
to the hardess and the type of abrasive
of stone, we suggest the following
leaner speed according to different
type stone.
According
to the above expressions, we recommend
the following sheet for your reference:
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THE
RELATIONS BETWEEN DIAMETER
AND RPM |
DIAMETER
(MM) |
Leaner
Speed (m/s) |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
RPM
of Main Motor (r/min) |
200
mm
250
mm
300
mm
350
mm
400
mm
450
mm
500
mm
550
mm
600
mm
700
mm
800
mm
900
mm
1000
mm
1100
mm
1200
mm
1300
mm
1400
mm
1500
mm
1600
mm
1800
mm
2000
mm
2200
mm |
2390
1910
1590
1360
1190
1060
960
870
800
680
600
530
480
430
400
370
340
320
300
270
240
210 |
2870
2290
1910
1640
1430
1270
1150
1040
960
820
720
640
570
520
480
440
410
380
360
330
290
250 |
3340
2670
2230
1910
1670
1490
1340
1220
1110
960
840
740
670
610
560
510
480
450
420
380
330
300 |
3820
3060
2550
2180
1910
1700
1530
1390
1270
1090
960
850
760
690
640
590
550
510
480
440
380
350 |
4300
3440
2870
2460
2150
1910
1720
1560
1430
1230
1070
960
860
780
720
660
610
570
540
490
430
380 |
4780
3820
3180
2730
2390
2120
1910
1740
1590
1360
1190
1060
960
870
800
740
680
640
600
550
480
430 |
5250
4200
3500
3000
2630
2330
2100
1910
1750
1500
1310
1170
1050
960
880
810
700
660
600
530
480 |
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H: Feed Speed, this is depend on
the perforamnce of cutting tools
usually means the quality of segment.
every type tool when the cutting
depth is confirmed then the feed
speed has its own range. If the
speed is too high, then the diamond
of segment will be exhausted quickly
even fall form the bond, then the
life of the segment will be short.
If the speed is too low, then the
blade's sharp-self course can not
be conducted normally so that the
blade become blunt to lose cutting
ability. As usual, the feed speed
should be slow when the blade enter
the cutting, and average when it
is cutting. Regarding normal typical
material, when the cutting depth
is 6mm, we recommend the following
list of feed speed for your reference,
when the thickness is changing,
the cutting speed can be calculated
with cutting area(cm2/min).
Please
note: The feed speed of initial
cutting or the first three cutting
course of every piece slab should
be half of usual speed.
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FEED
SPEED OF COMMON MATERIAL (Unit:
mm/min) |
Material
Name |
GRANITE |
MARBLE |
CONCRETE |
CORUNDUM |
FEED
SPEED |
500-800 |
2000-3000 |
500-700 |
70-125 |
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I: Regarding the cutting depth of
medium hard stone such as marble,
limestone which can be cut out one
time, as to hard or abrasive stone
such as granite, sandstone which
should be cut for more times. By
using single blade to cut granite,
as usual the cutting depth is 4-8mm,
cut marbel the cutting depth is
15-30mm, multi-blades two sides
cut hard granite, the cutting depth
is 3-5mm, anyhow, the cutting depth
should be decided by the the hardness
of stone, the performance of saw
blade and cutting machines.
J: If the rotation direction of
the saw blade is same as the movement
direction of stone, we call it same-direction-cutting,
otherwise we call it contradict-direction-cutting.
When the cutting is under contrary
direction, there is a rising vertical
strength which makes a trend of
lifting up the stone block. So,
in order to make the block steady,
under same cutting conditions, should
try to use same-direction-cutting.
When under contradict-direction-cutting
the cutting depth should be reduced,
as usual it should be 1/3-->1/2
of same-direction-cutting depth.
K: Sum up the above mentioned, the
basical requirement of cutting technics
is: regarding soft hard for easy
cutting stone, the cutting can be
slow with deep cutting depth, as
to the hard stone the cutting is
just contrary. To the same type
stone and corresponding cutting
machine & saw blade, the cutting
parameter should be subjected to
high efficiency, good quality slab,
long life of segment and saw blade,
this four points is relevant. When
the cutting speed of the saw blade
can not keep in a certain number,
this means the blade is blunt, should
reduce the cutting depth and increase
the feed speed to make the blade
sharp.
L: Recommended cutting technics
of Multi-blades for reference: |
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Technics
| Material |
Soft
Marble |
Hard
Marble |
Soft
Granite |
Medium
Hard Granite |
Hard
Granite |
Leaner
Speed (m/s) |
45-50 |
40-50 |
35-40 |
30-35 |
25-30 |
Cutting
Depth (mm) |
300 |
300 |
4-5 |
3-4 |
1-2 |
Feed
Speed (mm/min) |
120-140 |
60-70 |
60 |
60 |
60 |
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