The Benefits of Using DTH drill pipes

A 'Down-the-Hole' Hammer is probably the most important component on the drill rig and the DTH system holds many advantages over other alternatives, for instance:  Rotary Drilling is fine for large diameter holes in softer more friable rock but less effective in hard rock or where small diameter holes are needed. Top Hammer (Drifter) drilling systems can produce satisfactory results for short hole drilling in hard homogenous rock conditions but would likely experience difficulty in deep holes and in soft ground with large diameters. The DTH system is by far the most versatile and can be used very successfully in a wide range of ground conditions from soft, through medium to very hard.

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Small diameter holes with deep capability are all within the scope of the DTH system, which is recognized for providing clean, truly aligned bore holes at high drilling rates with minimal operating cost.

Some unique features of the DTH system:

• Capable of drilling in almost all ground conditions.
• Constant energy directly behind bit provides speed with less power loss and greater hole accuracy.
• Rigid drill string improves hole alignment.
• Air flow volume provides efficient flushing and cleaner holes.
• Choice of hole diameters are available with the same hammer.
• Easy to service and maintain.
• Large chip drilling provides speed with minimal dust emission.

These factors are very important to users operating in the many applications within the drilling industry, which can include:

Open Pit Mining, Aggregates Blast Hole ' Water Well ' Oil & Gas ' Rock Anchor ' Ground Consolidation ' Pile ' Seismic ' Geothermal ' Directional and Mineral Exploration Drilling.

Mincon DTH Hammers provide customers with these distinct benefits, as well as being able to operate across a wide air pressure range and still continue to provide maximum output with comforting reliability.

Mincon Hammers incorporate unique designs, use special steel and undergo closely guarded processes to make them stand out from other makes.

Mincon offer:

• Additional Flushing capability for cleaner holes, particularly at depth.
• Case hardened outer components for reduced wear in abrasive rock.
• Heavy Duty options for tougher conditions.
• Reversible Wear Sleeves on the larger models for extra life.
• Effective Check Valve for drilling in wet holes.
• Unique internal mounting concept removes need for shims or special tools.

Mincon has been at the bleeding edge of DTH design for the past three decades and have been firmly established as 'Leaders in Rock Drilling Technology'.

DTH Drilling Advantages

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DTH drilling offers several advantages over top-hammer drilling for larger, deeper holes in medium-hard formations. Because the hammer is at the bottom of the hole, power loss is minimal as the hole deepens. That means energy is not lost in the drill string and penetration rates do not markedly decline with depth'provided that backpressure does not rise significantly in the borehole. DTH drilling is most suitable for hole diameters of 4'10 inches, with some exceptions.

Compressed Air Power

Quieter Drilling

DTH Drilling Applications

The essence of submerged rock drilling is to make the impactor submerged in the hole during the drilling process in order to reduce the energy loss due to the impact work transmitted by the brazing rod, thus reducing the impact of the hole depth on the drilling efficiency. The rock drilling equipment for submerged rock drilling is a submerged drilling rig, which is an impact rotary drilling rig with an internal structure different from that of a general rock drilling rig, with its gas distribution and piston reciprocating mechanism is independent, i.e., the impactor. The front end is directly connected to the drill bit and the rear end is connected to the drill pipe. When drilling, the impactor is submerged in the hole, and through the air distribution device (valve), the piston (hammer body) in the impactor reciprocates and strikes the braze tail, which makes the drill bit impact the rock at the bottom of the hole. The high-speed rotation of the impactor in the hole is achieved by a separate rotation mechanism, i.e. by an electric motor or wind-driven rotating device outside the hole, through the drill pipe connected to the back end of the impactor. The rock powder produced during rock drilling is flushed out of the hole by the wind-water gas mixture, which is injected into the impactor through the center of the drill pipe by the powder discharge mechanism, and then enters the bottom of the hole through the gas slot on the impactor cylinder.

Contact us to discuss your requirements of DTH Drill Bits. Our experienced sales team can help you identify the options that best suit your needs.