High hardness sintered compact and process for producing the sam

Details High hardness sintered compact and process for producing the sam High hardness sintered compact and process for producing the sam

1987-12-28

1989-05-09

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C22C 2906

Patent

active

048286117

ABSTRACT:
Herein is disclosed a high hardness sintered diamond compact and a process for the production of the same.
The high hardness sintered diamond compact comprises 80 to 95% by volume of diamond particles, 0.5 to 5% by volume of a carbide particles selected from a group consisting of WC and (Mo,W)C and having a diameter not larger than 1 micron, and 4.5 to 15% by volume of an iron group metal, at least 95% by volume of said diamond particles having a diameter from 0.1 to 2 micron and the remainder of the diamond particles being particles having a diameter smaller than 0.1 micron.
The ratio by volume of the amount of the diamond particles having a diameter from 1 to 2 micron to that of the diamond particles having a diameter from 0.1 to 1 micron ranges from 4 to 1.
The high hardness sintered diamond compact according to the present invention is preferably usable as a drawing die for drawing a high hardness plated-steel wire and as a tool bit.
The process according to the invention, comprises the steps of:

REFERENCES:
patent: 4097274 (1978-06-01), Bakul et al.
patent: 4171973 (1979-10-01), Hara et al.
patent: 4231762 (1980-11-01), Hara et al.
patent: 4303442 (1981-12-01), Hara et al.
patent: 4505746 (1985-03-01), Nakai et al.

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