Tungsten Carbide Button in rock drilling

There are three main groups of rock drilling methods: percussive, rotary crushing and cutting rock drilling. In percussive and rotary crushing rock drilling the bit buttons are working as rock crushing tools as opposed to cutting rock drilling, where the tungsten carbide button work rather as cutting elements. A rock drill bit generally consists of a body of steel which is provided with a number of inserts comprising tungsten carbide. Many different types of such rock bits exist having different shapes of the body of steel and of tungsten carbide button as well as different numbers and grades of the inserts.

For percussive and rotary crushing rock drilling, tungsten carbide button inserts often have a rounded shape, generally of a cylinder with a rounded top surface, generally referred to as a button.

For cutting rock drilling, tungsten carbide button inserts often are provided with an edge acting as a cutter.



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