Rock Drilling Bit For Mining R28

The R thread button drill bit is a drilling consumable in mining work, tunneling, bolting, quarry, water well drilling and so on. The cutting head is equipped with hardened buttons which made from tungsten carbide that crush and break rock as the bit rotates and is stuck by the hammer.

It is designed to be equipped with top hammer drilling rig. The top hammer mechanism delivers percussive force directly to the bit, which transfer the energy to the rock. And the rotation of the bit ensures even wear and efficient rock removal.

The R thread rock bit are used in variety of rock drilling operations, including rock bolting in tunneling and construction, construction drilling for foundations and infrastructure projects, blast hole drilling in mining and quarrying.

• Example: BS(B)37R25-633A
• B: Button bit
• S:spherical button; B: ballistic button
• 37: Bit Diameter is 37mm
• R25: Thread R25
• 6: Gauge button numbers
• 3: Front button numbers
• 3: Face flushing holes
• A / B / C: Bit face design

The skirt material takes 45CrNiMoVA. And it is processed after heat treatment, making its hardness around HRC43-48. The carbide is made of YK05 or Element 6 tungsten.

Tungsten carbide YK05 and Element Six carbide are the most two popular material in the market. YK05 is cost - effective and widely used for standard top hammer drilling bits. However, Element Six carbide offers higher-end, customized solutions, often with better performance in extreme drilling conditions but at a higher cost. Gdrills, if no any customer directions, usually takes Element Six to be a guarantee of quality.

The button shape varies from spherical, ballistic, and conical. The spherical teeth usually used for hard rock. The ballistic bit features fast penetration and less impact resistance. It is designed for soft to medium rock. With balanced in durability and penetration, the conical tungsten bit is applied for medium-hard rock most.

Hot pressing method is applied for tungsten carbide button insertion. This technology ensures buttons would not dislodge in high impact drilling and reduces the risk of carbide button loss, improving bit lifespan than cold pressing inserting one.

• Test place: IRON ORE IN DAHONGSHAN,YUNNA,CHINA
• Test time: June 2024
• Rock formation: 60% magnetite, 40% hematite,gangue mineral is quartz.
• Hardness: Ore body F14-16, Flushing water PH-6.9-8.0
• Test model: Button bit R32-45mm
• Test result: 368 meters drilled and no buttons dropped off or broke

This testing was operated at Dahongshan Iron Ore, Yunnan, China, in June 2024, which proves that the hot-pressed button bit (R32-45mm) performance well under challenging geological conditions. Even though the rock was made from  60% magnetite, 40% hematite, with quartz gangue, and a rock hardness of F14-F16, the bit achieved an impressive 368 meters of drilling depth.

Hot Tags: rock drilling bit for mining r28, China rock drilling bit for mining r28 manufacturers, suppliers, factory, carbide button bit, button bit for rock drilling, taper button bits, dth button bit, button drill bit, R Thread Button Drill Bit