Elements faced with superhard material

Details Elements faced with superhard material Elements faced with superhard material

1996-09-18

1999-03-30

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428133, 428137, 428161, 428192, 428212, 4285428, B32B 300

Patent

active

058886192

ABSTRACT:
A preform element includes a polycrystalline facing table having a front face, a peripheral surface, and a rear surface bonded to the front surface of a tungsten carbide substrate. The front surface of the substrate has a flat central region and an outer peripheral region which is inclined away from the front face of the facing table as it extends outwardly. The outer peripheral region is formed with a number of spaced semi-circular recesses into which extend projections of diamond material formed on the rear surface of the facing table. The outer edge of each recess lies on the periphery of the substrate and the curved inner edge is tangential to the central region of the substrate. Smaller recesses are formed in the bottom surfaces of the semi-circular recesses and at other locations over the front surface of the substrate.

REFERENCES:
patent: 5534329 (1996-07-01), Bunimovich et al.

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