Method of producing a sintered diamond compact

Details Method of producing a sintered diamond compact Method of producing a sintered diamond compact

1978-12-13

1980-11-04

Arnold, Donald J.

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51307, 264102, B24D 306

Patent

active

042317622

ABSTRACT:
A sintered compact for use in a cutting tool and a method of producing the same are disclosed. The compact comprises 95 to 20 volume % of diamond finer than one micron in size and the balance binder also finer than one micron selected from the group of WC, (MoW)C, WC base cemented carbide and (MoW)C base cemented carbide.
The method comprises pulverizing a diamond powder by using cemented carbide balls and a pot having a cemented carbide lining, mixing the diamond powder with a powder abraded from the balls and pot to produce a powder mix finer than one micron containing 95 to 20 volume % of diamond, heat-treating the powder mix in vacuum so as to degas, and hot-pressing the powder mix under high pressure at high temperature within the stable range of diamond.

REFERENCES:
patent: 3306720 (1967-02-01), Darrow
patent: 3316073 (1967-04-01), Kelso
patent: 3779726 (1973-12-01), Fisk et al.
patent: 3913280 (1975-10-01), Hall
patent: 4063909 (1977-12-01), Mitchell

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