How to choose tungsten carbide button shape for rock button bits?

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How to choose tungsten carbide button shape for rock button bits?


1.Domed/Round Button

Domed/round buttons are usually used as gauge buttons of DTH bits , suitable for very

abrasive and very hard formations.


2.Parabolic/Semi-Ballistic Button

Parabolic buttons are usually used as gauge buttons and front buttons of DTH bits ,

suitable for medium abrasive and hard formations.

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3.Ballistic Button

Ballistic buttons are usually used as front buttons of DTH bits , suitable for medium

abrasive and medium hard formations , They can also be used as gauge buttons if the

rock is soft.


4.Sharp Buttons

Sharp buttons are usually used as front buttons of DTH bits for soft formations , suitable

for high rotation speed and low bit broken rate soft rock.