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

B - Operations, Transporting

23

K

76/21, 148/55.1

B23K 35/32 (2006.01) B23K 31/02 (2006.01) B23K 35/30 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1308578

ABSTRACT OF THE DISCLOSURE 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 s 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: Ni 30 60 Pd 30 - 62 Si 3 - 15% An alternative alloy has the following compsoition: Cr 4 - 10% Fe 1 - 5% Si 2 - 7% C 0.01 - 0.10% B 2 - 5% Ni Balance

569119

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