Method of healing cracks and flaws in a previously sintered ceme

Details Method of healing cracks and flaws in a previously sintered ceme Method of healing cracks and flaws in a previously sintered ceme

1991-01-17

1993-02-16

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Plural heating steps including sintering

419 55, B22F 324

Patent

active

051868920

ABSTRACT:
This patent covers the concept of putting a previously sintered carbide tool or part back through the sintering process. This resintering, heals stress related microcracks which, when allowed to progress, could ultimately be a cause of the failure for the object. This produces a longer life, better quality cemented carbide tool to be used for cyclically applying pressure and/or heat.

REFERENCES:
patent: 3595484 (1971-07-01), Barnard et al.
Goetzel, "Treatise on Powder Metallurgy", vol. 1, 1949, pp. 673-675.

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