Method of treating cemented carbide bodies regarding their compo

Details Method of treating cemented carbide bodies regarding their compo Method of treating cemented carbide bodies regarding their compo

1987-02-04

1988-09-20

Lechert, Jr., Stephen J.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148127, 51307, C21D 100

Patent

active

047723394

ABSTRACT:
The present invention relates to a unique and advantageous method making possible a superior technical and economical separation of cemented carbide bodies based upon their compositions and structures.
The critical point of the method is, that after formation of a melt by melting of the binder metal including dissolved elements from the hard constituents there are so strong driving forces dependent on the grain size variables, proportions and compositions of the hard constituent phases, that melt is re-distributed between cemented carbide bodies in communicating contact. The re-distribution is determined by differences of mean grain sizes, grain size distributions, relative proportions and compositions of the hard constituent phases of the bodies.

REFERENCES:
patent: Re32111 (1986-04-01), Lambert et al.
patent: 4119459 (1978-10-01), Ekeman et al.
patent: 4230462 (1980-10-01), Moskowitz
patent: 4357382 (1982-11-01), Lambert et al.
patent: 4466945 (1984-08-01), Cheney et al.
patent: 4470956 (1984-09-01), Cheney et al.

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