Polycrystalline diamond tools cutting process

As PCD composite film with high hardness and wear resistance, it must use a special processing technology. Currently, the main use of the composite sheet machining PCD EDM wire cutting, laser processing, ultrasonic machining, high-pressure water jet technology, such as several methods.
Process methods - Process Features
EDM - highly concentrated pulsed discharge energy, a powerful explosive discharge of the PCD material of the metal melt, some diamond graphitization and oxidation, some diamond off, technology, high efficiency Ultrasonic machining - Machining efficiency is low,  cubic boron nitride  consumption, dust pollution Laser processing - non-contact processing, high efficiency machining deformation, poor process
In the processing method, EDM better results. PCD in the presence of the bridge combined EDM composite sheet becomes possible. In conditions of a working fluid, a pulse voltage to the electrode near the metal working fluid is formed at the discharge channel, and the local produce sparks, polycrystalline diamond instantaneous high  synthetic diamond  can melt off, thereby forming the desired triangular, rectangular or square head blank. EDM efficiency PCD composite sheet and surface quality by the cutting, PCD size, thickness and the electrode quality and other factors,  Polycrystalline diamond  choice which is critical cutting speed, experiments show that increasing the cutting speed will reduce the surface quality, the cutting speed is too low will produce "arch wire" phenomenon and reduce cutting efficiency. Increased PCD inserts will reduce the thickness of the cutting speed.