Tungsten Carbide – Polycrystalline Diamond Buttons Impact Resistance (1/2)

Tungsten carbide – polycrystalline diamond button is based on tungsten carbide and punching for polycrystalline diamond welding, which makes this composite buttons not only have excellent hardness and impact resistance, but also the defect of wear resistance can be made up by polycrystalline diamond. Theoretically, tungsten carbide – polycrystalline diamond buttons can be perfectly suitable for the requirements of impacting resistance of DTH drills. In order to prove this inference, related researchers design the interior impact test, which was calculated using the results of DTH drill buttons at the construction site of the state power to withstand the impact of granite, the impact test simulates the maximum extent carbide - PCD composite buttons as the actual working environment DTH drill buttons.

The experiments use tungsten carbide – polycrystalline diamond button reference φ115 DTH drill diameter edge button φ16mm by comparing the number of different inserts welded polycrystalline diamond (1-4) composite ball gear respectively 30J, 50J, 70J the number of times the impact energy of the impact, the impact is 100 times. If tungsten carbide – polycrystalline diamond buttons do not break within 100 times under the impact energy, we can confirm that this impact energy within the safety value. Afterwards, combining different types of DTH drill requirements for impact resistance buttons, it is possible to obtain more rigorous carbide - polycrystalline diamond composite buttons can meet the respective DTH drill impact resistance requirements.

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