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What are the shapes of drill bit alloys for rock drill rods?
When the impact power is insufficient (insufficient air pressure of pneumatic rock drills, performance changes of hydraulic rock drills, etc.), the work of conical teeth is more effective, but the abrasion resistance is poor.
Mar 27th,2025
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What are the shapes of drill bit alloys for rock drill rods?
There are roughly several shapes of alloy teeth used in carbide ball teeth in rock drill products: hemispherical teeth, bevel teeth, parabolic teeth, wedge teeth. Hemispherical teeth have high energy utilization and good rock breaking effect under the condition of sufficient impact power of hydraulic rock drills. The alloy teeth are strong and wear-resistant. Conical alloy ball teeth are easy to drill into rocks and have a high drilling speed. When the impact power is insufficient (insufficient air pressure of pneumatic rock drills, performance changes of hydraulic rock drills, etc.), the work of conical teeth is more effective, but the abrasion resistance is poor.
Parabolic ball teeth are the crown shape between bevel teeth and hemispherical teeth, which are mainly produced and used by foreign alloy factories or joint ventures. Wedge-shaped ball teeth are suitable for hard and abrasive rocks.
