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{"title":"Light Weight DTH Drilling Tools API REG Thread Drill Rod For Water Well Drilling","imgUrl":"https:\/\/img.chinax.com\/nimg\/f4\/04\/43ea51677f94c1190c5156573a33-200x200-1\/light_weight_dth_drilling_tools_api_reg_thread_drill_rod_for_water_well_drilling.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"76mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
{"title":"Friction Welding DTH Drill Rods for ROC L6 Drill Rig 5.5 - 9 mm Thick 5 Meter","imgUrl":"https:\/\/img.chinax.com\/nimg\/bf\/7d\/7e36a0c8ca1bf70c79719e95b01d-200x200-1\/friction_welding_dth_drill_rods_for_roc_l6_drill_rig_5_5_9_mm_thick_5_meter_length.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"102mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
{"title":"API REG Thread Forging DTH Drilling Tools , DTH Drill Rods for Rock Blasting","imgUrl":"https:\/\/img.chinax.com\/nimg\/8c\/22\/a0ccb8feabc251f95f2a4db6b127-200x200-1\/api_reg_thread_forging_dth_drilling_tools_2c_dth_drill_rods_for_rock_blasting_drilling.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"60mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
{"title":"3'' Middle Pressure DTH Button Bits Tools , Down The Hole Hammer Bits","imgUrl":"https:\/\/img.chinax.com\/nimg\/13\/46\/00e57324296a62e2cb3418bc76a5-200x200-1\/3_27_27_middle_pressure_dth_button_bits_tools_2c_down_the_hole_hammer_bits.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"DHD3.5-90mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
{"title":"5 Inch DTH Drilling Tools Down The Hole Button Bits For Big Diameter Hole","imgUrl":"https:\/\/img.chinax.com\/nimg\/5e\/01\/bfbbfc81c0d55b3c00efcd582afe-200x200-1\/5_inch_dth_drilling_tools_down_the_hole_button_bits_for_big_diameter_hole_drilling.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"127mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
{"title":"Tungsten Carbide DTH Drilling Tools Forging Type DTH Mining Drill Bits","imgUrl":"https:\/\/img.chinax.com\/nimg\/57\/b0\/4253b02a77f14aedf1dc0581cd0e-200x200-1\/tungsten_carbide_dth_drilling_tools_forging_type_dth_mining_drill_bits.jpg","attrs":{"Brand Name":"JCDRILLS","Model Number":"115mm","Certification":"ISO,CE","Place of Origin":"Hebei,China"}}
6 Inch High Pressure Down The Hole Drill Bit For DTH And Water well drilling
Application
What are ‘Down-the-Hole’ (DTH) Drill Bits and how are they used?
Down-the-hole drill bits are used with down-the-hole hammers for drilling holes through a wide range of rock types.
In conjunction with our DTH hammers, our drill bits are designed with a splined drive for rotating the bit in the ground. Drill bits are available in a range of different sizes and configurations so they can drill a wide range of holes sizes, in different ground conditions.
How have DTH Drill Bits developed?
Down-the-hole drill bits are used with down-the-hole hammers for drilling holes through a wide range of rock types.
In conjunction with our DTH hammers, our drill bits are designed with a splined drive for rotating the bit in the ground. Drill bits are available in a range of different sizes and configurations so they can drill a wide range of holes sizes, in different ground conditions.
Rapid advances in drill bit technology have occurred throughout the last 40 years. The first type of drill bits used with down-the- hole hammers were ‘cross bit’ design. Four chisel shaped lengths of tungsten carbide were brazed creating stresses within the drill bit thereby limiting its life. A further disadvantage of the cross bit design was that the majority of the carbide was situated around the centre of the bit face and not towards the outer edge of the drill bit where there is the most rock to cut.
In the late 1960s however, the button bit was introduced; this was a landmark in the progress of DTH equipment, which led to bit lives previously unheard of.
Cylindrical button inserts were precision ground to extremely close tolerances and pressed into the bit as an interference fit. This resulted in improved carbide insert retention by eliminating brazing stresses and other defects associated with brazing and braze materials.
Buttons inserts are distributed more efficiently than cross bit inserts by providing more cutting power where it is needed at the outer edge of the drill bit face.
In many cases, the need to sharpen the drill bit was eliminated
with the arrival of the button bit and the improved cutting action provided While the cross bit design is still used in some rotary and drifted applications where the rock is very soft, the button bit is now used in virtually every DTH application.
Characteristics
- Advanced hammer designs with high power and air efficiency increases productivity - Tailored product offering covers all your applications and conditions - Easy service and maintenance designs reduces machine downtime - Generic and proprietary shank options give you flexibility and reliability
Packing& Delivery
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1999
Total Annual:
30 Million-40Million
Employee Number:
250~300
Ecer Certification：
Verified Supplier
Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related access... Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related access...
