Technical Support

Technical Support

At SANSO, our specialized technicians are ready to solve all the problemsencountered by our customers in the stone processing lines as well as help themto improve their products to the best.

Guide for Cutting
A. Saw blade idle running: Especially when using a new saw blade for the firsttime, the blade should be rotated without cutting for over 30 minutes, andwater should be used for the idle running in hot summer days. The purpose is toeliminate the influence of segment on the saw blank during the welding process,and help ensure quality cutting when the saw blades are running underhigh speed.

B. According to the length, width and height of stone block, adjust the travelswitch, so the rise and fall of saw blade or the charging wagon can be keptwithin an effective range. Before cutting, the distance between segment and thehighest position of stone block should be 10-20mm. After the cutting, thedistance 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, and the distance should beat least 150-200mm to prevent the blade from striking against the block.

C. The saw blade can only cut the block aftersteady rotation. When the segment is touching the stone block, the saw bladecan not be loaded to run (rotate); also when the blade is cutting the block,the rotation can not be stopped until the blade is out of the block completely.

D. In case that the stone block is vibrating in the process of cutting, stopthe cutting immediately. Cutting can be continued only when the block issettled steadily.

E. If there is any unnormal low cutting speed or the bladeis nipped while cutting, it is possible that the strap is sliding or thecompression nuts become less crowded or the cutting depth is too much or thefeed speed is too fast. This should be adjusted in time.

F. The linear speed should be adapted to the hardness and the abrasiveresistance of stone; we suggest you select from the following linearspeeds for cutting different types of stone.

The Relations Between Diameter And RPM

Diameter

(MM)

Linear Speed (m/s)

25

30

35

40

45

50

55

RPM of Main Motor (r/min)

200 mm

2390

2870

3340

3820

4300

4780

5250

250 mm

1910

2290

2670

3060

3440

3820

4200

300 mm

1590

1910

2230

2550

2870

3180

3500

350 mm

1360

1640

1910

2180

2460

2730

3000

400 mm

1190

1430

1670

1910

2150

2390

2630

450 mm

1060

1270

1490

1700

1910

2120

2330

500 mm

960

1150

1340

1530

1720

1910

2100

550 mm

870

1040

1220

1390

1560

1740

1910

600 mm

800

960

1110

1270

1430

1590

1750

700 mm

680

820

960

1090

1230

1360

1500

800 mm

600

720

840

960

1070

1190

1310

900 mm

530

640

740

850

960

1060

1170

1000 mm

480

570

670

760

860

960

1050

1100 mm

430

520

610

690

780

870

960

1200 mm

400

480

560

640

720

800

880

1300 mm

370

440

510

590

660

740

810

1400 mm

340

410

480

550

610

680

700

1500 mm

320

380

450

510

570

640

660

1600 mm

300

360

420

480

540

600

600

1800 mm

270

330

380

440

490

550

530

2000 mm

240

290

330

380

430

480

480

2200 mm

210

250

300

350

380

430


G: Recommended Cutting Techniques of Multi-blades

Granite Class

Cutting Depth (Forward + Backward)

Feeding Speed(m/min)

Class 1

1.2-1.5mm + 1.1-1.3mm

12-15

Class 2

0.7-1.0mm + 0.6-0.9mm

12-15

Class 3

0.5-0.6mm +0.4-0.5mm

11-13


H. Feed speed mainly depends on the performance of cutting tools (which usuallymeans the quality of segment). Every type of tool, given a certain cuttingdepth, provides feed speed which falls within aspecific range. If the speed is too high, the diamond of segment will beconsumed quickly and even fall from the bond, and thus the life of the segmentwill be short. If the speed is too low, the blade's self-sharpening can not beconducted normally so that the blade becomes blunt to lose cutting ability.Generally speaking, the feed speed should be slow when the blade cuts in, anduniform when it is sawing.

I. Regarding the cutting depth, the medium hardness stone such as marble andlimestone can be cut out at one time. Hard or abrasive stone such as granite,sandstone should be cut several times. When using a single blade for cuttinggranite, the cutting depth is generally 4-8mm, and for cutting marble, thedepth w is 15-30mm. When multi-blades are used for double-sided cutting of hardgranite, the cutting depth is 3-5mm. Anyhow, thecutting depth should be decided on the basis of the hardness of stone, theperformance of saw blade and cutting machines.

J. If the rotation direction of the saw blade is the same as the movementdirection of stone, we call it same-direction-cutting; otherwise we call itcontrary-direction-cutting. In the process of contrary-direction-cutting, thereis an upward vertical strength which tends to lift the stone block. So, inorder to make the block steady, under the same conditions, it is recommended totry to use same-direction-cutting. As for contrary-direction-cutting, thecutting depth should be reduced, and should be 1/3-->1/2 ofsame-direction-cutting depth.

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