Products Description
LEANOMS
"Down-the-hole drill bits" refer to a specific type of drill bit used in down-the-hole (DTH) drilling techniques. DTH drilling is a method commonly used in mining, construction, and oil and gas exploration to penetrate hard rock formations.
In DTH drilling, a drill string with a hammer at the end is driven into the ground by applying force and rotation. Compressed air or other fluids are used to power the hammer, which delivers rapid impacts to the drill bit. The drill bit, in turn, breaks the rock by chipping or crushing it.
Down The Hole Drill Bits are designed to withstand the high impact forces and abrasive conditions encountered during DTH drilling. They are typically made of high-grade steel and feature a carbide button or insert at the tip for efficient rock penetration. The shape and arrangement of the buttons may vary depending on the specific drilling requirements, such as the type of rock formation and desired drilling speed.
These Down The Hole Drill Bits are available in various sizes and configurations to suit different drilling applications. They are commonly used in conjunction with DTH hammers, which provide the necessary energy for the drilling process.
Overall, Down The Hole Drill Bits are critical components in DTH drilling operations, enabling efficient and effective rock penetration in demanding geological conditions.
Down The Hole Drill Bits are used in various industries, including mining, construction, and oil and gas, to penetrate hard rock formations. While DTH drill bits are designed to be robust and durable, they can experience several failures during operation. Here are several failure types that can occur with Down The Hole Drill Bits:
Wear: Constant drilling in abrasive formations can cause wear on the cutting structure of the drill bit. The inserts or buttons on the bit can become dull or break, leading to reduced drilling efficiency and slower penetration rates.
Erosion: Drilling in formations with high water content or abrasive particles can lead to erosion of the bit's surface. The erosion can cause the cutting structure to become rounded or flattened, reducing its effectiveness and necessitating bit replacement.
Corrosion: Exposure to corrosive substances, such as certain types of rocks or drilling fluids, can result in corrosion of the drill bit. Corrosion weakens the bit's structure, leading to premature failure.
Fatigue: Continuous drilling operations can subject the Down The Hole Drill Bits to cyclic loading and stress, leading to fatigue failure. Fatigue cracks can develop in critical areas of the bit, ultimately causing complete failure.
Impact damage: During drilling, the drill bit can encounter unexpected hard objects or encounter excessive force, resulting in impact damage. This can lead to chipping or breakage of the cutting structure or other components of the bit.
Thread failure: DTH drill bits are connected to the drill string using threaded connections. Over time, the threads can wear or deform, leading to thread failure. This can result in the bit becoming disconnected from the drill string or losing stability during drilling.
Heat-related failure: Intense drilling operations can generate significant heat at the drill bit. If the bit is unable to dissipate heat efficiently, it can lead to thermal degradation, loss of hardness, and reduced performance.
Manufacturing defects: Occasionally, drill bits can have manufacturing defects that can cause premature failure. These defects can include issues with the materials used, incorrect heat treatment, or poor quality control during the manufacturing process.
It's worth noting that proper maintenance, monitoring, and regular inspection can help identify and mitigate these failure types, extending the lifespan and performance of DTH drill bits.
Specification
LEANOMS
Technical Parameters Of QL60 DTH Bits
|
Diameter |
Gauge Buttons |
Front Buttons |
Weight(KG) |
Part Number |
||||
|
mm |
Inch |
Flat Face |
Convex Face |
Concave Face |
Face Type |
|||
|
140 |
5 1/2 |
Φ18*7 |
Φ14*3 |
Φ15*4 |
/ |
Convex Face |
15.1 |
LR-QL50-140CV |
|
140 |
5 1/2 |
Φ16*8 |
Φ14*8 |
/ |
/ |
Flat Face |
15.3 |
LR-QL50-140FF |
|
146 |
5 3/4 |
Φ18*8 |
Φ15*8 |
/ |
/ |
Flat Face |
15.9 |
LR-QL50-146FF |
|
146 |
5 3/4 |
Φ18*8 |
Φ15*4 |
/ |
Φ14*3 |
Concave Face |
15.8 |
LR-QL50-146CC |
|
152 |
6 |
Φ18*8 |
Φ15*8 |
/ |
/ |
Flat Face |
16.4 |
LR-QL50-152FF |
|
152 |
6 |
Φ18*8 |
Φ16*4 |
/ |
Φ14*4 |
Concave Face |
16.2 |
LR-QL50-152CC |
