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How to Repair Geological Drill Pipe and Drill Bit-Yikuang Science and Technology
Release time:
2021-08-17
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The essence of geological drill pipe and drill bit is to make the impactor dive into the hole during the drilling process to reduce the energy loss caused by the impact work transmitted by the drill pipe, thereby reducing the impact of the hole depth on the drilling efficiency. The drilling apparatus for drilling a potential hole is a potential hole drill. In China, yq-80,yq-100,qz-165 and other types of geological drill pipe are commonly used in underground mines. 1. in the process of drilling geological drill pipe and drill bit, the propulsion beam should be tightly attached to the rock and do not move. If the propulsion beam moves in the borehole, bending stress will be generated, which in extreme cases can cause abnormal fracture of the drill pipe. 2. not allowed in advance
Geologydrill pipeThe essence of the drill bit is to make the impactor dive into the hole during the drilling process to reduce the energy loss caused by the impact work transmitted by the drill pipe, thereby reducing the impact of the hole depth on the drilling efficiency. The drilling apparatus for drilling a potential hole is a potential hole drill. In China, yq-80,yq-100,qz-165 and other types of geological drill pipe are commonly used in underground mines.
1. in the process of drilling geological drill pipe and drill bit, the propulsion beam should be tightly attached to the rock and do not move. If the propulsion beam moves in the borehole, bending stress will be generated, which in extreme cases can cause abnormal fracture of the drill pipe.
It is 2. not permitted to initiate the percussion function of the drill bit before the advancing beam and drill pipe contact the rock.
3. the drill bit can damage the bit and cause the string connection of the bit to become loose, resulting in energy accumulation and ablation pits. In the process of rock drilling, the drill bit should try to avoid empty drilling.
4. holes shall be opened at low impact and low thrust. It is recommended to activate the high impact function after the drilling depth reaches 20cm.
It is 5. to provide as much slag medium as possible.
6. if the slag medium switch is turned on too late, it may cause blockage and blockage of the drill bit slag hole.
7. as long as the drill bit operation is carried out, the drill bit should be closed. The gap between the drill sleeve and the drill pipe and the drill sleeve and between the drill sleeve and the drill sleeve should not be too large. The worn drill sleeve must be replaced.
The 8. impact pressure should always be determined according to the specific rock conditions. If the rock becomes soft or breaks, the impact pressure must be reduced.
It is 9. to replace the drill tail washer in time. If the washer is damaged, the lubricating oil will leak out quickly, which will quickly damage the drill tail drive sleeve and the drill tail itself.
"To do a good job, we must first improve the geological drill pipe and drill bit", in the drilling industry, in order to drill efficiently and quickly, and to ensure that the chisel has a reasonable and sufficient drilling life, it must be suitable for different rocks to match the thread chisel.
The best choice for soft rock conditions: full ballistic teeth and large vertical slag discharge grooves can effectively remove large debris and greatly improve drilling efficiency. Abrasive rock, medium hard to hard rock: larger trapezoidal teeth and slag grooves can perfectly balance service life and perforation rate.
The short geologic drill pipe easy-return bit is more suitable for fractured rock mass, and has higher borehole verticality, which can transfer impact energy to rock mass more effectively, thus providing excellent bit steering. For hard, hard and abrasive rocks, the optimized surface and large spherical cylindrical tooth drill can extend the service life. The large slag discharge holes and grooves ensure that the chips are effectively blown from the holes to the ground. Higher hardness, strongerPDC BitsProper strength, hardness and wear resistance can be ensured, and a good heat treatment process can provide better fatigue strength. The stronger geological drill pipe can better fix the alloy tooth drill bit and reduce the risk of the alloy tooth drill bit falling off. Its surface is harder and tougher, which can improve the performance of the drill bit and reduce the risk of fracture of the alloy tooth.
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