Sandvik large top hammer type cylindrical drill bit The Sandvik GT60 drill with the new alloy is called the RT300 series and offers longer wear life, higher drilling efficiency and better hole wall forming quality. Thanks to the new generation of super hard alloy XT48 and the latest Uniface drill end face design, the new drill bit has better strength and wear life than previous products, and the end face distribution of impact energy is more reasonable and the powder discharge is smoother. The new RT300 will continue to strengthen the GT60 product line as a leader in the drilling tool market and significantly improve the performance of the top hammer rig, enabling efficient, low-cost drilling with a depth of 33 meters.
Sandvik large top hammer type cylindrical tooth bit local shape display High hardness and high toughness are the basic characteristics of WC cemented carbide for cylindrical bit. Generally speaking, it is difficult to balance the above two. If the hardness characteristics of the material are emphasized, the alloy will be more wear-resistant but the brittleness will increase significantly. On the contrary, if the toughness of the material is emphasized, the bit of the drill bit will be more flexible, but the wear resistance will decrease. . In order to break through the shackles of the above-mentioned materials, Sandvik has long been committed to the development of alloy hardness and toughness, and has made great progress, so that the drill products achieve excellent performance in both wear life and rock breaking efficiency. The above research and development is still making continuous progress, enabling users to continuously obtain higher operating efficiency and lower operating costs. Using a new type of cemented carbide and innovative parts such as cutting parts, powder holes and material rigidity, Sandvik RT300/GT60 drills can be drilled more efficiently, quickly and with high precision in the range of 92-152mm (35â„8-6in). Cut high-quality drill holes and save 50% fuel consumption compared to the same type of wind-driven down-hole drilling.
The emergence of XT48 alloy broke through the constraints of material properties
The new Sandvik RT300/GT60 cylindrical drill bit uses a spare part code with S48 or R48, which means a spherical or bullet-type cylindrical tooth with XT48 alloy. The high strength and high toughness of the XT48 alloy greatly enriches the application range of Sandvik cylindrical tooth drills under various rock conditions and has achieved excellent results. Soon, the alloy will also be used in open pit mines and engineering after the tunnel drill bit. The secret of XT48 alloy is the use of the latest manufacturing process technology, which allows it to have higher density and better grain uniformity than previous DP45 alloys. At present, Sandvik has applied XT48 alloy to drills with a diameter of less than 51 mm. It has achieved good application results under extremely harsh conditions that are prone to cause early failure of drill bits. The life of drills is almost 100% improved. The improvement in perforation efficiency is also excellent. Large-scale drills used in open-air step drilling, because more metal bodies can support the cylindrical teeth, the life of the drill can be increased by 10~30% based on different rock conditions, and the drilling efficiency is at least 5~10. % increase. More importantly, based on the latest XT48 alloy and Uniface end face design, this design combines the advantages of the previous Sandvik traditional flat and foveal drills, which means the drill bit can be used in a wider range of rock conditions. And enable users to further reduce the level of drilling tools and reduce the cost of drilling operations.
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