Instructions for Using Core Drill Bits
2025-02-11
The usage instructions for the down-the-hole drill bit are crucial for ensuring its safe operation.
The use of the down-the-hole drill bit should be selected based on the hardness, abrasiveness of the rock, and the type of drilling rig (such as high air pressure, low air pressure), as different alloy teeth and tooth arrangements are suitable for drilling different types of rock. Before assembly, ensure that the splines of the drill bit are coated with grease and gently placed into the down-the-hole impactor chuck to avoid collision damage.
During use, ensure that the air pressure of the down-the-hole drilling rig is sufficient to avoid intermittent operation of the impactor or poor discharge of cuttings from the borehole. Additionally, regularly check the drill bit, including the condition of the alloy teeth, tail pipe, and impact end, to promptly identify and address issues such as wear, cracking, or corrosion.
During drilling, if metal objects fall into the hole, they should be removed promptly to avoid damaging the drill bit. When replacing the drill bit, pay attention to the Size of the borehole to avoid using a new drill bit with excessive wear in diameter but not yet drilled borehole, to prevent jamming. Worn drill bits can be appropriately re-sharpened to extend their service life, but ensure that the re-sharpened alloy teeth do not exceed the surface of the drill bit too much.
Furthermore, when drilling in highly abrasive formations, special attention should be paid to the wear condition of the drill bit, and the wear frequency should be controlled as needed to determine the frequency of re-sharpening. In summary, proper use and maintenance of the down-the-hole drill bit can not only improve drilling speed but also extend the service life of the drill bit and reduce construction costs.
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