Cemented carbide

Details Cemented carbide Cemented carbide

1996-01-08

1998-07-07

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 37, 75236, B22F 100

Patent

active

057783012

ABSTRACT:
This invention consists of two parts: "Cemented Carbide with Minimal Amount of Binder Metal", and "Nonmagnetic Cemented Carbide".
The "Cemented Carbide with Minimal Amount of Binder Metal" is for cemented carbide bodies which are made from less than 2% binder metal powder and metal carbide powder. The raw powder is to be prepared following a conventional powder metallurgy method--especially the conventional method of making cemented carbide--milling, forming and sintering.
The "Non-magnetic Cemented Carbide" is cemented carbides which have nickel-tungsten alloy as a binder metal. The process of manufacturing uses said conventional powder metallurgy. The purpose of this invention is to manufacture non-magnetic cemented carbide using more than two metal carbide powders and binder metal. More than one kind of metal carbides form solid solution carbide during the sintering process.

REFERENCES:
patent: 1973428 (1934-10-01), Comstock
patent: 3918138 (1975-11-01), Nemeth et al.
patent: 4945073 (1990-07-01), Dubensky
patent: 5273571 (1993-12-01), Mirchandani et al.
patent: 5482670 (1996-01-01), Hong

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