Method for making thixotropic materials

Details Method for making thixotropic materials Method for making thixotropic materials

1981-12-01

1987-09-22

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164 711, 164459, 164477, 164900, 72270, 420590, B22D 1700, B22D 2500

Patent

active

046948813

ABSTRACT:
A process for forming a liquid-solid composition from a material which, when frozen from its liquid state without agitation, forms a dendritic structure. A material having a non-thioxotropic-type structure, in a solid form, is fed into an extruder. The material is heated to a temperature above its liquidus temperature. It is then cooled to a temperature less than its liquidus temperature and greater than its solidus temperature, while being subjected to sufficient shearing action to break at least a portion of the dendritic structures as they form. Thereafter, the material is fed out of the extruder.

REFERENCES:
patent: 3874207 (1975-04-01), Lemelson

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