About Saw Blade Cutting 294

1. Idling: Especially when the new substrate is first used, it needs to idle for about 30 minutes. In the high temperature season of summer, it also needs to idle with water. The purpose is to further eliminate the impact of welding the blade on the substrate and enhance the memory of the saw blade to maintain its internal quality under high-speed rotation.

2. The amount of waste material shall not be less than 0.5m3 and shall be placed securely. The bottom surface shall be padded with square wood, firmly stuffed, and the waste material shall be located in a symmetrical position on the workbench to ensure the stability of the workbench and the waste material, without any shaking or shaking.

3. Adjust the travel switch according to the length, width, and height of the waste material to ensure that the lifting of the saw blade and the travel of the material cart are within a reliable and effective range. Before sawing, the blade edge of the saw blade should be at most 10-20mm away from the raw material. After sawing, the distance between the saw blade and the bottom of the raw material should be 20-40mm. Before the saw blade moves left and right on the blade holder, the saw blade should be completely removed from the raw material saw blade, and the distance should not be less than 150-200mm to prevent the saw blade from hitting the raw material.

4. The trial cutting can only be carried out after the saw blade has stabilized during idle operation. It is not allowed to start the saw blade when it comes into contact with the raw material. During cutting, the saw blade should not be stopped from rotating and must be removed from the saw blade before stopping.

5. If any shaking of the waste material is found during cutting, the cutting should be stopped immediately. The work can only continue after the waste material is firmly fixed. During cutting, it is not allowed to move the waste material arbitrarily.

6. If the saw blade shows obvious deceleration or even clamping during cutting, it may be due to belt slipping, loose clamping nuts, excessive cutting depth, or excessive cutting speed, and should be adjusted in a timely manner.

7. The linear speed should be suitable for the hardness and wear resistance of the processed stone. It is recommended to choose the linear speed in the table below to cut different types of stone. Tip: When the online speed is not high, increasing cutting efficiency will reduce the lifespan of the saw blade.

8. The feed speed mainly depends on the performance of the processed material. For each material, there is a certain range of feed speed when the cutting depth is constant. If the speed is too high, it will accelerate the wear and even fall off of the diamond, causing the saw blade to consume too quickly. If the speed is too low, it will also make the saw blade self sharpening process unable to proceed normally, resulting in "dullness, slipping" and loss of cutting ability. In general, the feed rate should be slow during cutting and uniform during sawing. For common typical materials, when the cutting depth is 20mm, the following feed rate table is recommended for your reference. When the thickness changes, the cutting rate can be converted according to the cutting area (cm2/min). Tip: For the first cutting or the first three walks of each board, it should be halved.

9. For medium hardness stones such as marble and limestone, the cutting depth can be cut through in one go. For hard stones and those with high abrasiveness such as granite and sandstone, the cutting should be done in steps. When cutting granite with a single saw, the cutting depth is generally 10-20mm, and when cutting marble, the cutting depth is 50-100mm. When cutting hard granite with multiple double-sided saws, the cutting depth is 3-5mm each time. It should be determined based on the hardness of the stone, the performance of the saw blade and saw machine used. The following efficiency table is recommended for your reference. Common material cutting efficiency table note: "Level 1" represents low-power precision machining; Level 2 represents high-power rough machining.

10. When the rotation direction of the saw blade is the same as the feed direction of the stone, it is a forward cutting, otherwise it is a reverse cutting. During reverse cutting, due to an upward vertical force, there is a potential to lift the stone. Therefore, in order to stabilize the stone, under the same conditions, it is advisable to use forward cutting as much as possible. When using reverse cutting, the cutting depth should be reduced, generally to 1/3 to 1/2 of the forward cutting.