An In-Depth Classification of Threaded Drill Bits
Threaded drill bits, also known as top hammer drilling tools, serve as a cornerstone in both jumbo tunneling and deep-hole rock drilling operations. A wide array of these products exists, including connection ends, couplings, drill rods, and an assortment of bit designs like cross, X-type, and button bits. These come in various thread profiles such as R25, R28, SR28, R32, R3212, R38, HL38, T38, T45, T51, T60, ST58, and ST68, catering to specific drilling needs and machinery compatibility.
Construction and Manufacturing
The production of threaded drilling tools involves the use of specialized steel for enhanced strength and durability. The outer profiles are crafted using state-of-the-art CNC (Computer Numerical Control) machines, ensuring precision and consistency. These components undergo rigorous heat treatment processes within vacuum furnaces, including quenching, tempering, and carburizing to increase surface hardness and resistance to wear.
Button bits, in particular, are made from high-quality hard alloys and are secured using a robust fixation process. The surfaces of these bits are treated with advanced electrostatic vacuum spraying techniques for painting, which not only enhances corrosion resistance but also gives the product a distinctive finish.
Drill Rods and Quality Assurance
Drill rods, also known as top hammer rods for jumbo and deep-hole applications, are manufactured from one of the best steels available globally. The steel is produced through a series of metallurgical processes, including EBT electric arc furnace melting, LF furnace refining, VOD furnace vacuum degassing, followed by casting, forging, peeling, and core rolling manufacturing techniques. The rods are then threaded using CNC machines and undergo holistic gas permeation and wind cooling processes, ensuring exceptional internal quality.
These rods have been put to the test in several major hydropower construction projects across China, where they stood up to well-known international brands in on-site comparative trials. The comprehensive performance indicators of these rods are now nearly on par with imported products. However, what sets our products apart is the competitive pricing, which is just 60% of the cost of their imported counterparts, offering a significant advantage in terms of cost-effectiveness. The main product specifications include R25, R28, SR28, R32, R3212, R38, HL38, T38, T45, T51, T60, ST58, and ST68.
In summary, threaded drill bits and rods represent a crucial segment of rock drilling equipment, designed to withstand the most challenging drilling conditions. By harnessing advanced materials and
