Method for compacting alloy powder

Details Method for compacting alloy powder Method for compacting alloy powder

1984-05-14

1986-09-02

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder shape or size characteristics

72402, 419 31, 419 42, 419 48, 419 49, B22F 100

Patent

active

046095268

ABSTRACT:
A method for producing high speed, tool and die steel articles from prealloyed powders. The method comprises placing particles of a prealloyed steel composition from which the article is to be made in a deformable container, heating the container and particles and then passing the heated container through a forging box having a plurality of hammers evenly spaced around the container and adapted to extend and retract radially to impart a radial forging action to the container. The forging action is of a magnitude and duration to compact the particles to an essentially fully dense article. Preferably, there are four hammers arranged in two pairs with the hammer of each pair being opposed and adapted to extend and retract in unison.

REFERENCES:
patent: 3787205 (1974-01-01), Church
patent: 3834004 (1974-09-01), Ayers
patent: 3897618 (1975-08-01), Church
patent: 4069042 (1978-01-01), Buchovecky
patent: 4414028 (1983-11-01), Inoue
patent: 4452756 (1984-06-01), McLeod
patent: 4460541 (1984-07-01), Singleton et al.
Henderson et al., 1953, Metallurgical Dictionary, Reinhold Publ. Co., N.Y., p. 322.

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