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 veryabrasive 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.

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.