Choose the Tungsten Carbide Mining Buttons for DTH drill bits

The selection of carbide button to meet the drilling performance requirements of down the hole drill bit needs to fully synthesize the rock characteristics, drilling conditions and bit design and fitment.

For high hardness rocks, such as granite, quartzite, etc., high hardness and good wear resistance should be selected tungsten carbide button. Generally speaking, carbide button with higher content of tungsten carbide (WC) have higher hardness. For example, ball teeth with WC content above 90% and appropriate binder (e.g. Cobalt Co) can effectively resist the wear of rock and maintain good drilling performance.

Under high-speed drilling conditions, the impact force on the cemented carbide button is high. Therefore, it is necessary to select carbide tipped button with high impact resistance. the arrangement of the button in a DTH drill affects the drilling efficiency and the force on the teeth. Reasonable arrangement of the button enables each button to share the drilling work evenly. Staggered button provide better rock breakage and reduce wear on individual button.

When selecting carbide button, consider whether their shape and size match the arrangement of the drill bit. Consulting a Jinxin expert can help you select the shape and size of carbide button to match your DTH drill bit and provide more professional service.