OUTIL COMPOSITE COMPORTANT UNE PARTIE ACTIVE EN DIAMANT POLYCRISTALLIN ET PROCEDE DE FABRICATION DE CET OUTIL

摘要

The composite tool (1) comprises a sintered metal carbide support (2) and a polycrystalline diamond active part (3) having an inner surface (4) of metallurgical connection to the support (2) and an outwardly facing working surface (5). The working surface (5) comprises corrugations (7) which are substantially parallel to one another and form successive projecting zones (7) and hollow zone (8) on at leasst a part of the working surface (5). The composite tool is in particular intended for drilling to a great depth, such as drilling oil wells.