Improvements in or relating to elements faced with superhard material

A preform element, suitable for use as a cutting element on a rotary drill bit, includes a polycrystalline diamond facing table (20) bonded to a tungsten carbide substrate (21), the rear surface of the facing table being formed with an array of elongate ribs which project from the facing table into...

Full description

Saved in:
Bibliographic Details
Main Authors DANIEL J SARIK, ALEX NEWTON, TERRY RICHARD MATTHIAS, JOHN M FULLER
Format Patent
LanguageEnglish
Published 20.12.1995
Edition6
Subjects
BORING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
TRANSPORTING
TURNING
Online AccessGet full text

Cover

More Information
Summary:A preform element, suitable for use as a cutting element on a rotary drill bit, includes a polycrystalline diamond facing table (20) bonded to a tungsten carbide substrate (21), 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 (25,26) 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 (25,26) may intersect to provide a generally star-shaped formation.
Bibliography:Application Number: GB19950012173