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NEW DIAMOND DTH Bits Carbide teeth and drill face selection
Date:2018/9/28 10:36:55

  NEW DIAMOND DTH Bits Carbide teeth and drill face selection

The hard-bonded gold tooth of the down-the-hole drill bit mainly bears the high-frequency stress wave from the impactor, directly transmits the high-frequency stress wave to the rock surface and participates in the cutting work. The working condition of cemented carbide teeth is extremely complicated when working, especially the edge alloy teeth. Under the action of high-frequency impact force, bending moment and torque occur, and it is easy to form broken teeth or broken teeth. The alloy tooth shape and the distribution of the alloy teeth should be considered and the corresponding alloy teeth should be selected for different rock hardness, different geological structures and drill practice.





Center Drop Bit

 For high penetration rates in soft to medium hard and fissured rock formations,Low to medium air pressure.

Concave Face

The all-around application bit face apecifically for medium hard and homogenerous rock formations.Good hole deviation contol and flushing capacity.

Convex Face 

    For high penetration rates in soft to medium hard with low to medium air oressure,it is the most resistance to steel wash,and may reduce the load and wear on gauge,but poor hole deviation control.

Convex Concave Face

    This shape of the head is suitable for all rock formations, especially in medium hard and lithologically uniform rock formations. Mainly used for large aperture drills, the drill has good guiding effect and good slagging effect.

Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations.Desiged for high air pressures and good resistance to steel wash step gauge bit.

Flat Face Bit

This kind of face shape is suitable for hard to very hard and abrasive fock formations in applications with high air pressures.Good penetration rates an resistance to steel wash.


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