A: Enough space for cuttings to evacuate the hole efficiently;
B: High-performance design for harsh and abrasive conditions formations;
C: Components Replace Easy to Save Drill Cost;
D: Choose Right DTH Drill Rods;
E: Choose Right Friction-welded joints;
A: Enough space for cuttings to evacuate the hole efficiently:
As experienced, the smallest hole diameter a DTH hammer can drill is its nominal size. i.e. standard 102 mm (4 inches) hammer will drill a hole down to a minimum diameter of 102 mm (4 inches). The limiting factor is the outside diameter of the hammer dth, because as the hole diameter reduces due to diameter wear of the dth hammer bit, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 25 mm (1 inch), so for a 102 mm (4 inches) hammer the maximum hole size is 127-130 mm (5 inches).
The right drill bits are determined by the type of application, hole size, and type of rock formation, the size of the hammer DTH should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole efficiently.
B: High-performance designed DTH Rock Tools for harsh and abrasive conditions formations:
VD DRILL DTH hammers are purpose-matched for all rock types and applications where high performance and low total cost per drill meter are the main criteria.
- ) VD Drill’s DTH Hammer with a common design is a suitable choice for dth drilling in quarries, shallow water well drilling, and underground blast hole drilling.
- ) VD Drill’s standard DTH hammer is the optimum selection for demanding conditions in abrasive formations. It has the same internal components as the common design, but with larger OD of the drive chuck and wear sleeve. These also protect the top sub from excessive wear when rotating out of the hole through broken rock. Each hole hammer is made from quality alloy steel and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and the head of DTH Hammer is fitted with a top sub-fitted with tungsten carbide buttons for wear protection in harsh and abrasive conditions.
Each DTH hammer can be quickly and easily adjusted to different compressor air pressures and air volumes, making our hammers fit all drill rigs, operating at different altitudes and climates.
C: Components Replace Easy to Save Drill Cost:
DTH drilling to greater depths with Higher penetration rates (More efficient) and lower fuel consumption (cost-effective).
As experienced, a hole hammer used in dth hammer drilling should be replaced when it has lost 10% in net penetration rate. The total drilling cost per meter increases drastically when productivity drops. All VD hole hammers have the rebuild option with components, components consisting of external and internal wear parts. This is a valuable option particularly in abrasive to medium abrasive formations. With a unique combination of the highest quality in design, production, and material, the hole hammers can be rebuilt with sustained performance. They are faster, lighter, more service friendly, and longer lasting than ever before.
The components each have different life cycles and as each of them wears out, they can individually be replaced, creating more efficiency. This also provides greater cost savings for operators in the long term.
D: Choose Right DTH Drill Rods:
DTH Pipe (tubes) made from cold-drawn tubing provide a superior surface finish and tolerance compared to tubes made from hot-rolled tubing. A better finish reduces the risk of metal chips from the tubes, called scaling. Scaling that flows through the hammer is a significant cause of premature hammer failure.
E: Choose Right Friction-welded joints:
Friction-welded joints add strength. Heat treating the threads of end-pieces ensures optimum durability and power of the thread profile. Preserving the thread profile keeps coupling and uncoupling smooth, without adding time to the average rate of penetration.
One-stop-shop – a total solution
We offer a complete range of DTH drilling tools including DTH hammers, drill bits, DTH pipes ( DTH drill rods), adapters (Subs), casing tubes, breakout benches machines, and DTH button bit grinding machines…
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Please read How to choosing right DTH Hammer : https://drillbitsupplier.com/how-to-choose-the-right-dth-hammer/
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