Newly patented process designed to selectively leach PDC cutters

摘要

Newly patented Encore Bits process is announced to selectively leach portions of PDC cutters already mounted in drill bits. It involves coating the entire PDC cutter with an acid-resistant film, then removing the film from portions of the cutter where leaching is preferred. The cutter is then bathed in acid to remove the cobalt-catalyzing material.