Reduced residual tensile stress superabrasive cutters for earth

Details Reduced residual tensile stress superabrasive cutters for earth Reduced residual tensile stress superabrasive cutters for earth

1998-05-20

1999-10-26

Bagnell, David

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175426, 175430, 451540, 451541, 51293, E21B 1036, B23F 2103

Patent

active

059710870

ABSTRACT:
A superabrasive cutting element, the substrate of which is structured with a reduced dimension circumferential portion about which is formed an annular portion of superabrasive material, such as sintered diamond in the form of a polycrystalline diamond compact, to provide a ring- or skirt-like portion of superabrasive material at the perimeter of the cutting element to reduce residual tensile stresses existing at the perimeter of the cutting element after formation.

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The New DPI Premium PDC Cutters, EDGE.TM. CUTTERS, DPI/Diamond Products International (no date) (1 page).

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