Button Bit
2.Used with medium and large hydraulic or pneumatic rock drills for mine exploitation, tunnel boring, drift support, hydropower projects, and rock anchor hole drilling, etc.
3.It is especially suitable for brittle rocks and performs excellently in medium-hard to hard and highly abrasive rock formations.
4.It has a wide range of coverage. Common specifications include Φ32mm, Φ34mm, Φ36mm, Φ38mm, Φ40mm, Φ42mm, and it can be customized to larger sizes such as Φ76mm and Φ89mm.
Product introduction
Button Bit is a very important tool in modern drilling engineering. Its head is brazed with multiple spherical or conical hard alloy teeth, and it mainly breaks rocks by relying on the impact and crushing action of these button teeth.
Button Bit product Parameter (specification)
|
Parameter Name |
Connection method |
Unit |
Tungsten carbide bit diameter |
|
Stud-tooth type |
Tapered connection |
mm |
Φ38- Φ42 |
|
Stud-tooth type |
Waveform Threaded R32 t=12mm |
mm |
Φ55- Φ75 |
|
Stud-tooth type |
Waveform Threaded R32 t=12.7mm |
mm |
Φ45- Φ76 |
|
Stud-tooth type |
Trapezoidal thread connection T38 |
mm |
Φ64- Φ102 |
|
Stud-tooth type |
Trapezoidal thread connection T45 |
mm |
Φ76- Φ115 |
Product feature and application
Structural features:
Scientific Tooth Arrangement Design: The arrangement of the columnar teeth has been optimized. It adopts a five-wing, seven-tooth layout, where the central tooth is slightly higher to facilitate positioning and create a free face for the side teeth; the side teeth are inclined outward to ensure that the drilling diameter is larger than the drill body diameter, preventing jamming. This design helps bridge rock fractures, allowing each columnar tooth to bear a reasonable rock-breaking area.
Optimized cutting edge and gap angle: The gap angle (the inclination angle of the side of the bit body) can effectively reduce the contact area between the bit body and the hole wall, thereby lowering friction resistance and the risk of bit sticking, typically set at 3-5 degrees. A reasonable tooth layout design ensures good balance for the stud-type bit when breaking rock.
Application fields:
Mining: Open-pit mine blasting holes, underground mine tunnel driving, and stope backfilling drilling.
Infrastructure Construction: Railway/highway tunnel boring, water conservancy and hydropower projects (such as diversion tunnels), large slope anchoring.
Stone Mining and Secondary Crushing: Intelligent mining of Decorative Stones such as Marble and Granite, and Secondary Crushing of Large Rock Blocks.
Petroleum and Geology Exploration: Oilfield Drilling, Geological Sampling, Water Well Drilling, etc.
Production details
Made of high-quality alloy steel to withstand high-frequency impact loads. Its shape is optimized with a gap angle design to reduce friction with the hole wall.
The tungsten carbide bit body is designed with powder discharge grooves and flushing holes, which use high-pressure air or water to discharge rock powder and cool the drill bit.
Why choose us
1.The economic benefits are significant
The most direct advantage of the column-toothed bit is its extremely long service life. Since its 'non-wear life' (the working time from the new bit being put into use to the first resharpening) far exceeds that of traditional blade-type bits, it can significantly reduce auxiliary time for stopping work to replace or resharpen tools. This means that in large engineering projects, the overall project progress can be accelerated while saving material costs and labor costs from frequent bit replacements. Research data shows that in some applications, its drilling speed can be increased by 24% to 43.7% compared to the Single-point chisel bits, the service life can be extended by 1.02 times, and the bit cost can be reduced by 20%.
2.Operational performance is excellent
The drilling quality is high. The arrangement of the chisel teeth has been optimized in design, ensuring stable lifting of the drill bit, producing round and neat boreholes, which helps improve blasting effects or support quality. The powder discharge effect is good. The drill head body is designed with a slag guide groove-type arc groove powder discharge structure and flushing holes, which can effectively discharge rock powder using high-pressure air or water, reduce repeated crushing, maintain high drilling speed, and cool the drill bit.
3.The device has strong adaptability and a wide range of application scenarios
The column-tooth type bit is an ideal partner for modern heavy-duty rock drilling equipment. Its combination with hydraulic rock drilling rigs is regarded by industry insiders as the optimal supporting configuration for modern rock drilling technology.
FAQ
Q: In what situations should Button Bit be prioritized?
A: 1.Complex and fragmented rock formations: When rock fractures are well-developed and hardness is uneven, the distribution design of the chisel teeth can better balance the force, making it less likely to get stuck with the drill rod and ensuring high drilling stability.
2.Pursuing high efficiency and long service life: Its one-time non-grinding service life is much higher than that of matrix bits (such as Single-point chisel bits, cross drill bits), which can significantly reduce auxiliary time for replacement and grinding, thereby accelerating engineering progress and lowering comprehensive costs.3.High drilling quality is required: The holes drilled by the button-type rock drill bit are more circular in shape, with good hole straightness, which helps improve blasting efficiency or support quality.
Q: What are the essential operational precautions when using Button Bit?
A: 1.Drilling Tips: When starting to drill, the impact energy of the rock drill should be set low. Once the drill bit has smoothly penetrated the rock, gradually increase it to the normal parameters. This can prevent the alloy teeth from chipping due to excessively high local stress.
2.Ensure smooth powder discharge: Make sure there is sufficient water pressure or air pressure for powder discharge. Unsmooth powder discharge will cause the rock powder to be re-ground by the drill bit, leading to excessive wear and jamming of the drill rod.
3.Avoid brute-force operations: During the operation, reduce the thrust to minimize the stress on the ball tooth bit.
4.Abnormal Handling: If encountering abnormally hard foreign objects or a sudden increase in resistance during drilling, stop the operation immediately for inspection. Forcing through will cause severe damage to the drill bit.
Q: How to determine if a Button Bit needs resharpening or replacement?
A: 1.Regular Inspection: The wear condition of the钎头 alloy teeth and shell should be inspected regularly.
2.Grinding timing: When the width of the platform formed by the wear of the alloy teeth reaches a certain limit, timely grinding is required. Continuing to use it will sharply reduce the rock drilling speed and increase energy consumption.
3.Replacement Standard: If the tip shows conical wear, the body is swollen or cracked, or the alloy teeth are chipped or broken, it should be replaced immediately to avoid creating a waste hole.
Q: How to maintain and store button bits?
A: 1.Post-use cleaning: After use, the rock powder and moisture on the钎头 should be cleaned thoroughly. 2.Grinding: When the cutting edge wears to the extent that resharpening is required, it should be promptly resharpened by a professional or using dedicated equipment to restore its performance. 3.Storage: Drills should be stored properly on the drill rig to prevent dust and other debris from entering the interior of the drill. It is recommended to store them in a dry place.
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