Tungsten Carbide Button Distribution Optimization on Drills (1/2)

The main component of tungsten carbide button is the hard phase of WC and the binder phase of Co, which has high hardness, high strength, excellent wear resistance and corrosive resistance and perfect impact resistance. So it can be widely used in high-pressure DTH (drill-the-hole), oil drilling, tunneling, mining industry and civil architecture. Due to its excellent wear resistance and impact resistance, compared with other materials, and it has higher drilling speed and the life span of drills and bits will be extended so that it does not need to change buttons constantly, which improves the overall efficiency and reliefs the labor.

On the basis of ensuring the stable properties of tungsten carbide buttons, the quantity and the distribution of buttons on drills and bits are also the significant factor on drilling performance. The essence of .tungsten carbide button distribution optimization on drills is based on keeping the excellent drilling properties and has the least number of buttons and the best location. Practically, a reasonable distribution of tungsten carbide button is beneficial for reducing the consumption of rock drilling, improving the drilling rate and in case of the wear of cutting buttons early to ensure the best cutting performance. Take DTH drill as an example, the bottom center of the distribution by the number of buttons surrounded, and one of the lowest penetration rates determines the drill bit ROP (rate of penetration), and the lowest life expectancy button also determines the life of the drill bit.

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