Precautions for the use of drill bits How to ensure safe use

Drill bit is a kind of commonly used hardware tool products. Although the size of the drill bit is relatively small, it is inseparable from the modern industrial construction industry. Some things need to be paid attention to during the use of the drill bit, so as to ensure that it can be used normally. , It can also ensure its safety in use. What are the precautions for the use of drill bits?

Precautions for the use of drill bits:
1. When working in different rock formations, choose different types of drill bits, axial pressure and speed according to the hardness of the lithology; working in soft rock formations, replacing the drill bit in the middle, strictly check the alloy on the back of the palm of the old drill bit and the cone If the teeth have fallen off to the bottom of the hole, if there are residues from the old drill bit in the hole, it is strictly forbidden to use a new drill bit in the original hole; when the rock has cracks or the rock cracks caused by blasting and the work in the goaf, reduce the axial pressure And speed to prevent crappy teeth.
2. When drilling rigs, they must follow the principle of matching the three elements of the drilling (wind pressure, axial pressure, and speed) with the parameters recommended by the drill bit sample.
3. Please check the appearance of each part of the drill bit before going down the well to verify whether the end face of the drill bit thread is consistent with the factory number on the drill bit packing box and certificate; whether there is a trademark mark on the surface of the drill bit tooth palm to prevent counterfeiting.

4. The drill bit should be reasonably stored on the rig to prevent dust and other debris from entering the drill bit.
5. When a new drill bit is drilled, it should be used with low axial pressure and low speed for 20-30 minutes, and then gradually increase to normal axial pressure.
6. When making a new hole with a new drill bit, pay attention to removing the debris around the hole (rocks, scrap metal, etc.), while rotating, ventilate and slow down, close to the surface, to prevent sudden drilling and impact damage to the drill.
7. When the drilling tool is in the hole, it is strictly prohibited to reverse to prevent the drill bit from falling into the well.
8. When the drill bit is in the hole and the air compressor suddenly stops working, rock slag can easily enter the drill bit. Therefore, it is strictly prohibited to rotate for a long time, which will cause bearing wear, repeated broken slag (or stuck), and accelerated bit wear.
9. During normal piercing operations, the main air path of the air compressor must not have serious air leakage to ensure sufficient air volume and air pressure to extend the service life of the drill.
10. It is strictly forbidden to use curved drill rods to avoid uneven force on the three palms of the drill bit and accelerate the damage of the drill bit.
11. Storage of drill bits should be moisture-proof and ventilated. In the process of transportation, it is strictly forbidden to knock the cones and threads.