Superhard material enhanced inserts for earth-boring bits

Details Superhard material enhanced inserts for earth-boring bits Superhard material enhanced inserts for earth-boring bits

E - Fixed Constructions

21

B

E21B 10/46 (2006.01) B23P 15/28 (2006.01) E21B 10/52 (2006.01)

Patent

CA 2289410

Superhard material enhanced inserts and methods of making the same have been disclosed. The enhanced insert includes a body portion adapted for attachment to the earth-boring bit and a top portion for contacting an earthen formation to be drilled. The top portion includes a substrate and a layer of superhard material over a portion of the substrate other than in central region of the outer lateral face. For example, a layer of polycrystalline diamond is provided in the leading transition of the top portion, whereas the trailing transition and the central region of the outer lateral face of the top portion are substantially free of polycrystalline diamond.

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