Process for direct shaping and optimization of the mechanical ch

Details Process for direct shaping and optimization of the mechanical ch Process for direct shaping and optimization of the mechanical ch

1991-05-03

1991-12-03

Hunt, Brooks H.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Post sintering operation

419 25, 419 29, 102517, 102518, 102519, 29 122, B22F 324

Patent

active

050698699

ABSTRACT:
A process for shaping penetrating projectiles useful in the manufacture of military ammunition, comprising: preparing an alloy of tungsten, nickel, iron and copper by powder metallurgy, compacting the alloy mass into a rough shaped blank having an axis of revolution, sintering the rough shaped blanks thereby producing a blank having a density of at least 17,000 kg/m.sup.3, and work-hardening the sintered blank at a temperature ranging from ambient temperature to 500.degree. C., thereby producing a blank having a variable degree of reduction in section in a direction parallel to the axis of the blank.

REFERENCES:
patent: 3890145 (1975-06-01), Hivert et al.
patent: 3979234 (1976-09-01), Northcutt, Jr. et al.
patent: 4665828 (1987-05-01), Auer

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