Tungsten Carbide Button Shape Optimization

Tungsten carbide button bits applied in rock drills have different shapes: hemispherical button, conical button, parabolic button and wedge button.

As the long hole drilling being widely applied than before, the requirement for tungsten carbide button quality applied in related equipments also enhances. Hemispherical button and conical button are the most widely applied in industry. During the application process, it can be observed that regular tungsten carbide hemispherical button can be easily passivating. Tungsten carbide conical button due to its wiry bit, can be cracking under big crash and super hard rock. Thus button profile can affect its properties in a certain degree.

Researchers invented a kind of tungsten carbide button which can resist blunt. This kind of button combines the shape of hemispherical button and conical button. It turns out that this kind of tungsten carbide button is of higher hardness and wear resistance, also drill velocity is faster.


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