Diamonds advance composites drilling: optimum tool design is critical.

The article explores the development of three brazed polycrystalline diamond (PCD) solid carbide drills with three different PCD grades and optimum tool geometries. Topics discussed include four different technologies to produce synthetic diamond-based drills for composite materials, and a brazing technology that will bond the PCD to tungsten carbide. Results and analysis of the experimental study on the performance of three drills with different PCD grades are also discussed.