In-lab micro drill test of brazed diamond bit

The brazed diamond drill has been widely used because of its high lifespan and high efficiency. The geological drilling test requires a lot of manpower and material resources. In order to optimize the brazing and sintering process, the drill matrix formulations compatible with different strata are studied. φ36-7B, φ36-11B micro drills are brazed and then tested with in-lab drill to study and optimize the brazing process. Results show that the carcass and diamond are well combined in the high-temperature and low-pressure sintering environment, that φ36-7B bit has higher drilling efficiency at similar wear per unit, and that the addition of WC particles can effectively improve the wear resistance of the φ36-11B bit matrix.