Process for preparing WC cemented carbide

Details Process for preparing WC cemented carbide Process for preparing WC cemented carbide

2005-05-24

2005-05-24

Jenkins, Daniel J. (Department: 1742)

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

C419S045000

Reexamination Certificate

active

06896845

ABSTRACT:
W powders and C powders are mixed at a ratio of 1:1, the raw material mixed powder is compacted to prepare a formed body, the formed body is embedded into a powder mixture capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, and according to heat of formation released, a reaction represented by W+C→WC is induced and the reaction is subjected to combustion synthesis to convert a whole of the formed body into sintered WC.

REFERENCES:
patent: 5188678 (1993-02-01), Sekhar et al.
patent: 5380409 (1995-01-01), Munir et al.
patent: 5996385 (1999-12-01), Kecskes
patent: 1344592 (2003-09-01), None
patent: 1344759 (2003-09-01), None
Derwent 2000-298826, “Combustion synthesis process for manufacturing cemented carbide involves of reactive powder mixture, heating by applying pressure, sintering and recovering”, 2 pages, Apr. 28, 2000.

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