Down-the-Hole (DTH) drilling technology is one of the key innovations in modern rock-drilling engineering. As the core component of the entire drilling system, the DTH drill bit directly determines drilling efficiency, service life, project costs, and construction safety. The DTH drill bit is connected to the DTH hammer via a precision spline joint; during high-speed drilling operations, it must withstand the intense cyclic impact loads generated by the hammer piston, continuous rotational torque, and severe abrasive wear from cuttings. This demanding operating environment places extremely stringent requirements on the drill bit’s material properties, structural design, and manufacturing processes: the drill-bit body must exhibit high strength and fatigue resistance, while the carbide inserts must possess excellent impact toughness and wear resistance to ensure stable performance under complex geological conditions.

In recent years, breakthroughs in tungsten carbide sintering technology have led to the development of ultra-coarse-grained and nanocrystalline cemented carbide materials. These new materials seamlessly combine high toughness with exceptional wear resistance, overcoming the performance limitations of conventional cemented carbide inserts and significantly expanding the application scope of DTH drill bits under extreme operating conditions.

Luoyang Jinlu Cemented Carbide Tools Co., Ltd. is a specialized manufacturer with many years of deep expertise in the field of rock drilling and engineering tools, with a long-standing focus on the R&D and production of DTH hammer drill bits. The company’s Rock Drilling Tools Division offers a comprehensive product portfolio that includes rock drilling tools, shearer picks, general engineering tools, and wear-resistant crushing tools. Leveraging advanced manufacturing processes, rigorous end-to-end quality control, and continuous independent R&D and innovation, Jinlu has established core technological strengths in the design and manufacture of DTH drill bits, providing global customers with high-performance, long-life, and cost-effective drilling solutions.

The core competitiveness of Jinlu’s down-the-hole drill bits stems from three irreplaceable technological advantages:

(1) End-to-end in-house R&D of tungsten carbide materials We independently control everything from powder formulation and sintering processes to alloy tooth forming; our ultra-coarse-grained cemented carbide ensures high toughness and outstanding wear resistance.

(2) High-Reliability Solid-Tooth Drill Bit Substrate Finite-element simulation and engineering testing are used to optimize the tooth-fixing structure, significantly reducing the likelihood of tooth loss and tooth breakage.

(3) Exclusive design for hard rock Optimizing the arrangement of cutting teeth, ensuring proper gas venting and smooth chip evacuation, thereby enhancing drilling efficiency and operational stability.

Compared with similar products, Jinlu’s DTH drill bits boast superior impact resistance, exceptional performance in ultra-hard rock formations, extended service life, and reduced downtime. Backed by independent R&D and large-scale production, these products offer competitive pricing and outstanding value, complemented by expert selection guidance and comprehensive global after-sales service. For medium- and large-scale mining operations and engineering contractors, choosing Jinlu means greater efficiency, lower costs, and more reliable construction assurance.