What is A Down The Hole Hammer Bit？
A Down The Hole (DTH) Hammer Bit is a drilling tool used in mining, construction, and exploration activities for creating holes in rock or other hard materials. The DTH hammer bit is a key component of the DTH drilling system.
What are the advantages of using a Down The Hole hammer bit?
Using a Down The Hole (DTH) Hammer Bit in drilling operations offers several advantages:
Faster Penetration Rates: DTH drilling typically provides faster penetration rates with an increase of 20%~30% compared to other drilling methods. The hammering action of the DTH hammer combined with the rotating drill bit allows for efficient and rapid drilling through hard rock formations.
Better Hole Straightness: DTH drilling tends to produce straighter holes, which is important in many applications. The straighter the hole, the more accurate the placement of explosives in mining or the installation of casings in geotechnical drilling.
Longer Bit Life: LEANOMS DTH hammer bits are designed to withstand the high impact forces and abrasion associated with drilling through hard materials. The lifespan is about 3 to 5 times that of industry peers. This durability results in longer bit life, reducing the frequency of bit changes and increasing overall drilling efficiency.
Versatility: LEANOMS DTH drilling is versatile and can be used in various applications, including mining, quarrying, water well drilling, geothermal drilling, and construction. Different types of DTH hammer bits are available to suit specific drilling needs and geological conditions.
Reduced Hole Deviation: DTH drilling typically experiences less deviation or deflection from the planned drilling path. The deviation value can be controlled within 5%. This is important for maintaining the accuracy of the borehole, especially in applications where precise hole placement is crucial.
Effective in Hard Rock: DTH drilling is particularly effective in hard rock formations where conventional drilling methods may be less efficient. The combination of percussion and rotation helps break and remove rock more effectively.
Efficient Dust Suppression: The use of compressed air in DTH drilling helps in clearing rock cuttings from the borehole, reducing the risk of bit binding and improving overall drilling efficiency. This also aids in dust suppression at the drilling site.
Suitable for Various Hole Diameters: LEANOMS DTH drilling tools can accommodate a wide range of hole diameters, making it adaptable to different project requirements.
How to choose a Down The Hole hammer bit according to the nature of the work?
Axial pressure, rotational speed, impact energy, and impact frequency are the primary factors influencing the Down The Hole hammer bit's drilling speed. The choice of parameters varies significantly for rocks of varying hardness. When drilling into a rock that has a low hardness, the Down The Hole hammer bit's drilling parameters should primarily satisfy the demands of rotary crushing and cutting; when drilling into a rock that is hard but poorly cemented, the drilling parameters should satisfy the demands of impact crushing to create volume crushing; and when drilling into the rock that is hard and dense, the drilling parameters should satisfy the demands of both impact and rotational rock crushing.
With over 20 years of experience in the Drilling Industry, we are experts in hard rock drilling. Choosing the right drilling tool is essential to your productivity and operating cost,and we know it. All LEANOMS DTH hammers and bits are built to last and manufactured to an exceptional standard. Our DTH hammers and bits provide the outstanding performance and productivity expected by drillers worldwide.
