DTH(down the hole) Hammers

DTH (Down-The-Hole) Hammers Product Introduction

Overview
DTH (Down-The-Hole) Hammers are high-performance drilling tools engineered for efficient, deep-hole excavation in demanding applications such as mining, oil and gas exploration, water well drilling, geothermal energy development, and infrastructure construction. By delivering direct impact energy to the drill bit at the bottom of the borehole, DTH Hammers significantly enhance drilling efficiency, even in complex geological conditions involving hard rock formations. Renowned for their durability, reliability, and low maintenance costs, DTH Hammers are a critical component of modern drilling operations worldwide.

Core Technological Advantages
1. High-Efficiency Impact System
– Optimized piston and valve sleeve design enables high-frequency, high-energy impacts, ensuring rapid penetration through extremely hard rock layers such as granite and basalt.
– Direct energy transfer to the drill bit minimizes energy loss, achieving 30% faster drilling speeds compared to conventional rotary drills.

2. Wear Resistance & Extended Service Life
– Critical components (e.g., cylinder, piston, drill bit) are crafted from aerospace-grade alloy steel and coated with tungsten carbide, enhancing wear resistance by 50% for abrasive environments.
– Modular design allows quick replacement of wear parts, reducing downtime and maximizing productivity.

3. Versatility & Compatibility
– Compatible with multiple drill rig types (top-hammer, rotary) and adaptable to borehole diameters ranging from 3 to 16 inches (76–406 mm), with drilling depths extending to hundreds of meters.
– Integrated air reverse circulation system ensures efficient cuttings removal and bit cooling, enabling stable performance in challenging formations (e.g., aquifers, fractured zones).

4. Energy Efficiency & Sustainability
– Low air pressure requirements (1.0–3.5 MPa) reduce energy consumption, while advanced bit designs minimize rock debris generation, aligning with global green mining standards.

Typical Applications
-Blast Hole Drilling (Mining): Precision-controlled hole depth and diameter for optimized blasting efficiency and ore recovery.
-Oil, Gas & Geothermal Wells: Rapid deep-rock drilling to accelerate project timelines.
-Hydraulic & Infrastructure Projects: Ideal for anchor holes, foundation pile holes, and tunnel pre-excavation surveys.
-Emergency Rescue & Exploration: Rapid deployment in complex geological conditions for resource exploration or disaster response.

Product Series & Selection Guide
DTH Hammers are available in a comprehensive range to meet diverse operational needs:
-Light Series: Designed for small-diameter (3–6 inches / 76–152 mm) and shallow-depth drilling, offering high mobility.
– Medium Series: Balances efficiency and durability, widely used in mining and infrastructure projects.
– Heavy Series: Engineered for ultra-deep holes and extreme hard rock, featuring reinforced impact structures and advanced cooling systems.

Selection Support: Tailor your choice based on rock hardness, target borehole diameter/depth, and equipment specifications. Complimentary technical consultation services are available.

Service Commitment
– Global Technical Support: 24/7 expert assistance, including on-site troubleshooting and operator training.
– Spare Parts Network: Strategic inventory hubs ensure critical components arrive within 48 hours to major mining and construction sites.
– Warranty: 12-month warranty on core components, backed by lifetime maintenance support.

Conclusion
DTH Hammers combine cutting-edge innovation with robust engineering to deliver efficient and reliable drilling solutions for the most challenging projects. Whether tackling extreme geological conditions or large-scale industrial operations, our products and services empower clients to achieve higher productivity and lower total cost of ownership.The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Air Consumption / Operating Pressure

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Air Consumption / Operating Pressure

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