Manufacture of cutting structures for rotary drill bits

Details Manufacture of cutting structures for rotary drill bits Manufacture of cutting structures for rotary drill bits

1988-06-09

1990-09-11

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

428457, 428698, 51293, 51295, 761082, 148476, 148442, 27826313, 420580, 175329, 175330, 175374, B32B 900

Patent

active

049562380

ABSTRACT:
A cutting structure, for a rotary drill bit, is of the kind comprising a preform cutting element having a front cutting face formed of superhard material, such as polycrystalline diamond, and a rear face bonded to a carrier of less hard material, such as cemented tungsten carbide. The cutting element is bonded to the carrier by means of an alloy having the following composition:

REFERENCES:
patent: 4508257 (1985-04-01), Bose et al.
patent: 4593776 (1986-06-01), Salesky et al.
patent: 4746379 (1988-05-01), Rabinkin
patent: 4772294 (1988-09-01), Schroeder

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