Diamond metal composite cutter and method for making same

Details Diamond metal composite cutter and method for making same Diamond metal composite cutter and method for making same

1989-12-13

1992-03-17

Dixon, Jr., William R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51293, 51298, 51308, 51309, B24D 1100

Patent

active

050964658

ABSTRACT:
A superhard material-metal composite product comprises a plurality of metal coated superhard particles (diamond or cubic boron nitride), and a binder alloy forming a cementing matrix which binds the coated superhard particles into a coherent mass. The binder alloy has a melting point below about 1300.degree. C. and is capable of wetting the metal coating on the superhard particles. The superhard material-metal composite product is formed by assembling the coated particles and the binder alloy in a graphite mold, and then hot pressing at temperatures and pressures well below the temperatures and pressures of the diamond forming region. The superhard component comprises about 40% to 75% by volume of the composite product. The superhard material-metal composite product is of intermediate quality and is particularly useful in earth boring bits for drilling soft rock formations having abrasive rock stringers therein.

REFERENCES:
patent: 2796706 (1957-06-01), Anderson
patent: 2818850 (1958-01-01), Schwarzkopf et al.
patent: 3841852 (1974-10-01), Wilder et al.
patent: 3871840 (1975-03-01), Wilder et al.
patent: 3879901 (1975-04-01), Caveney
patent: 4378975 (1983-04-01), Tomlinson et al.

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