Multiple tool inserts, typically between 40 and 60, are usually brazed individually onto a single drill bit, especially when used in down-hole fixed-cutter, hammer, or rock drill rebuild and ...

These inserts may be tungsten carbide inserts (TCI) or a polycrystaline diamond compact (PDC). Induction heating is ideal for pre-heating the drill bit to 600°C to prepare the torch brazing of the ...

Brazing techniques play a pivotal role in the fabrication of diamond tools, where the challenge is to achieve robust, durable bonding between diamond abrasives and metallic alloys.