Working Principle of Rock Drill Bit
When a rock drill bit is used, the core is driven into the material. The abrasive teeth on the bit teeth will wear away a thin layer of the surface. As soon as the chip breaks off, it turns over and drives another one into that hole. In addition to driving a new chip into the hole, it also removes some of the material from around its tip to enable better rotation and control when drilling further.
Drawback of rock drill bit:
- High core temperature: The high-speed impact of the core drill cutting abrasive rock material will produce high heat. This overheating can cause the binder of cutting materials to be launched and the grinding surface to crack, and the speed will decrease sharply.
- High penetration rate: When drilling rocks, it generates a large amount of dust due to large rock pieces being broken from the hole surface and powdery stones filling up. This causes an increase in dust concentration in the drilling process, resulting in a greater risk for individuals working near or within this cloud of dust.
- High rpm: High speeds and rotations can cause the matrix materials of the rock to enter the working area and block the installation of cutting tools, causing damage to the tool tips, wear on the drill bits, and even breakage.
- High head pressure: When drilling deep holes, head pressure in general can be quite large. This material will not only affect the performance of drill rig but also increase drill rig instability during drilling. Hydraulic pressure is often used when drilling rock, which means that there is a lot of heat generated by hydraulic equipment, causing wear on hydraulic components such as cylinder liners.
How to operate rock drill bit?
The operation of rock drill bit mainly includes the following aspects:
- When using a diamond core drill, it is not possible to know in advance that you will hit a large stone or crystal before reaching a depth greater than 10 meters. This is because rocks below this depth are mostly filled with air and water, while above this depth they are mostly filled with solid materials. In order to avoid being broken by a large stone or crystal suddenly appearing during drilling, it is necessary to determine if you will encounter a large stone or crystal before drilling, and change the direction of drilling by at least 45 degrees.
- When using a diamond core drill, it is not possible to know in advance that the drilling will suddenly encounter large stones or crystals before reaching a depth greater than 10 meters. Therefore, large stones and crystals cannot be easily broken when using a diamond core drill.
- When using rock drill bit, it is recommended to choose an appropriate size and speed of rotation. For example, the bit with smaller diameter can drill faster but with shorter drilling depth. On the other hand, a bit of large diameter can drill slower but with longer penetration depth.
Conclusion:-
Rock drill bit is widely used to drill rocks in all kinds of mining or mining projects. It can drill into any non-flammable, non-explosive, non-magnetic material. Besides, it also has the advantages of large hole diameter, long hole length and high drilling speed. For example, the rock drill bit is widely used in oil and gas exploration. In addition, it is also an important product for building subway projects because they can easily dig tunnels under the sea without flooding or suffering from other unexpected accidents.
