Process for producing shaped parts of metals

Details Process for producing shaped parts of metals Process for producing shaped parts of metals

1995-04-24

1997-11-11

Batten, Jr., J. Reed

Metal founding

Process

Shaping liquid metal against a forming surface

164900, B22D 1700, B22D 2500

Patent

active

056853572

ABSTRACT:
A metallic feed initially in a solid state is fed into a cylinder barrel of an injection molding machine. The metallic feed is melted by applying heat to the metallic feed from outside the cylinder barrel and by heat produced from frictional and shearing forces generated by rotation of a screw housed within the cylinder barrel. The cylinder barrel and screw define at least a feed zone, a compression zone and an accumulating zone. After melting and passing through each of the three zones, the metallic feed is injected into a die, to thereby form a shaped part. The temperature of the metallic feed is controlled to be above the liquidus of the metallic feed during the injecting process.

REFERENCES:
patent: 4694881 (1987-09-01), Busk
patent: 4694882 (1987-09-01), Busk
patent: 5040589 (1991-08-01), Bradley et al.

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