Elements faced with superhard material

Details Elements faced with superhard material Elements faced with superhard material

1995-06-16

1997-03-18

Rachuba, M.

Cutters, for shaping

Comprising cutting edge bonded to tool shank

407119, 175428, 408144, B23B 2714

Patent

active

056116497

ABSTRACT:
A preform element, suitable for use as a cutting element on a rotary drill bit, includes a polycrystalline diamond facing table bonded to a tungsten carbide substrate, the rear surface of the facing table being formed with an array of elongate ribs which project from the facing table into the substrate. The array of ribs includes a plurality of pairs of ribs which extend inwardly away from the periphery of the facing table, each pair of ribs being in a generally V-shaped formation so that the ribs diverge as they extend inwardly away from said periphery. Adjacent pairs of ribs may intersect to provide a generally star-shaped formation.

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patent: 4784023 (1988-11-01), Dennis
patent: 5007207 (1991-04-01), Phaal
patent: 5011515 (1991-04-01), Frushour
patent: 5120327 (1992-06-01), Dennis
patent: 5351772 (1994-10-01), Smith
patent: 5355969 (1994-10-01), Hardy et al.

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