Drill bits are essential tools widely used in the construction and industrial sectors. Though small in size, they play a crucial role in various drilling operations. To ensure optimal performance and safety, it's important to follow specific guidelines when using a drill bit. Here are some key precautions to consider:
1. When operating in different rock layers, choose the appropriate type of drill bit, along with suitable shaft pressure and rotational speed based on the hardness or softness of the rock. In soft rock formations, it’s necessary to replace the drill bit during the process. Always inspect the old bit for any missing alloy or broken teeth before inserting a new one. If remnants of the old bit are left in the hole, do not use a new one in the same location. If cracks or blasting-induced fractures are present in the working area, reduce axial pressure and rotational speed to prevent damage to the cutting teeth.
2. During drilling, always match the three key parameters—air pressure, axial pressure, and rotational speed—with the recommendations provided by the drill bit manufacturer to ensure efficient and safe operation.
3. Before starting, check the appearance of the drill bit. Ensure that the thread end face, the drill box, and the factory number on the certificate all match. Also, verify that the drill bit has a genuine trademark on the tooth surface to avoid counterfeit products.
4. Store the drill bit properly on the drilling machine to prevent dust and debris from entering and damaging the tool.
5. When first using a new drill bit, start with low axial pressure and low speed for about 20–30 minutes, then gradually increase to normal operating conditions.
6. Before drilling, clear the area around the hole of any debris such as rock fragments or metal shavings. Slow down the air supply and keep the drill close to the surface to avoid impact damage to the bit.
7. Never reverse the drill while it is in the hole, as this can cause the bit to fall out and lead to potential damage or injury.
8. If the air compressor suddenly stops during drilling, rock debris may enter the bit. Avoid prolonged rotation, which can cause bearing wear and increased damage due to repeated crushing of debris.
9. Ensure that the main air line of the air compressor is free from significant leaks to maintain adequate airflow and pressure, which helps extend the life of the drill bit.
10. Never use bent drill pipes, as this can create uneven force on the bit’s cutting teeth and accelerate its wear.
11. Protect the drill bit from moisture and ensure proper ventilation. Handle it carefully to avoid damaging the cone or threads.
By following these guidelines, you can significantly improve the efficiency, longevity, and safety of your drill bit usage. Whether you're working in mining, construction, or any other industry requiring drilling, proper handling is essential.
**Tag:** drill bit, bearing wear, use process, cone, hole bottom
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