Method for producing dies for use in compacting permanent magnet

Details Method for producing dies for use in compacting permanent magnet Method for producing dies for use in compacting permanent magnet

1989-05-12

1990-11-20

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 28, 419 32, 419 49, 419 11, 419 31, B22F 3200

Patent

active

049717561

ABSTRACT:
Producing a die for use in compacting permanent magnet alloy powder by placing a quantity of a magnetic or nonmagnetic alloy, which may be stainless steel, cobalt- or nickel-base, or a magnetic or nonmagnetic mixture of one of these alloys and carbide particles in a container, heating the particles to an elevated temperature and hot-isostatically compacting the particles at the elevated temperature to obtain a fully dense die blank and forming a die cavity in the die blank. Carbide particles may be mixed with the alloy particles. The die blank may have an exterior cladding of stainless steel.

REFERENCES:
patent: 4023966 (1977-05-01), Loersch et al.
patent: 4592889 (1986-06-01), Leupold et al.

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