Drill bit is a kind of commonly used hardware tool product. Although the bit of the drill bit is relatively small, it cannot be separated from the modern industrial construction industry. The drill bit needs to pay attention to some matters during use, so as to ensure that it can be used normally. Can also ensure the safety of its use, what are the precautions for using the drill bit?
Drill bit use precautions:
1. Operate in different rock layers, select different types of drill bit, shaft pressure and speed according to the softness and hardness of lithology; work in soft rock formation, change the drill bit in the middle, strictly check the alloy on the palm of the old bit and the cone Whether the teeth have fallen off to the bottom of the hole, if there is any old bit residue in the hole, it is strictly forbidden to use the new bit in the original hole; when there is crack in the rock or rock crack caused by blasting and working in the goaf, reduce the axial pressure. And the speed to prevent the teeth from breaking.
2. When the drilling machine is perforated, it must follow the principle that the three elements of the perforation (wind pressure, axial pressure, and rotational speed) and the parameters recommended by the drill sample match.
3. Before the drill is drilled, please check the appearance of each part to verify whether the end face of the drill thread and the drill box and the factory number on the certificate are consistent; whether the drill bit has a new trademark mark on the exterior of the tooth to prevent counterfeiting.
4. The drill bit should be reasonably stored on the drilling machine to prevent dust and other debris from entering the drill bit.
5. When the new drill bit is drilled, it is necessary to run the low shaft pressure and low speed for 20-30 minutes, then gradually increase to the normal axial pressure.
6. When the new drill bit is newly opened, it is necessary to pay attention to clear the debris around the hole (rock, scrap metal, etc.). At the same time, the air should be slowed down and close to the surface to prevent drilling and impact damage to the drill bit.
7. When the drill is in the hole, it is forbidden to reverse the drill to prevent the drill bit from falling.
8. When the drill bit is in the hole and the air compressor suddenly stops working, the rock slag is easy to enter the drill bit. Therefore, it is strictly forbidden to rotate for a long time, resulting in bearing wear, repeated crushing of rock debris (or stuck), and the wear of the drill bit is accelerated.
9. During the normal perforation operation, the main air path of the air compressor cannot have a serious air leakage phenomenon to ensure sufficient air volume and wind pressure to prolong the service life of the drill bit.
10. It is strictly forbidden to use the curved drill pipe to avoid uneven force on the three teeth of the drill bit and accelerate the damage of the drill bit.
11. The drill bit should be protected from moisture and ventilation. It is strictly forbidden to bump the cone and thread during handling.
Concerned about surprises
Label: What are the precautions for using the drill bit?
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