Impregnated diamond drill bit construction

Details Impregnated diamond drill bit construction Impregnated diamond drill bit construction

1978-05-19

1981-06-23

Vlachos, Leonidas

Cutting by use of rotating axially moving tool

Tool having crystalline cutting edge

408204, 407119, 175330, 76108R, B23B 2720

Patent

active

042747694

ABSTRACT:
An impregnated diamond drill bit having a generally cylindrical, hollow crown structure with a lower portion containing diamond particles and a steel shank attached to the crown structure at its upper end. The diamond particles are dispersed within a metal matrix in the lower portion of the crown. Around both the outside circumferential wall and the inside circumferential wall of portions of the crown structure, there are layers of a highly wear resistant material. These layers are formed of a material that is more wear resistant than the material used for the metal matrix in which the diamond particles are dispersed.

REFERENCES:
patent: 2607676 (1952-08-01), Kurtz
patent: 2712988 (1955-07-01), Kurtz
patent: 3127715 (1964-04-01), Christensen
patent: 3203774 (1965-08-01), Pratt
patent: 3372010 (1968-03-01), Parsons
patent: 3537538 (1970-11-01), Generoux
patent: 3640027 (1972-02-01), Weiss
patent: 3885637 (1975-05-01), Veprintsev

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