Guide for cutting
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:
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
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.
FEED SPEED OF COMMON MATERIAL (Unit: mm/min) Material Name GRANITE MARBLE CONCRETE CORUNDUM FEED SPEED 500-800 2000-3000 500-700 70-125
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:
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

Here is some advice for using core drill bits.TOP Diamond Tools wish you smooth work.