METHOD AND APPARATUS FOR PRESSURE DIE CASTING BY INJECTION OF METALLIC MATERIAL WITH DENDRITIC PROPERTIES Russian patent published in 1994 - IPC

Abstract RU 2023532 C1

FIELD: casting equipment. SUBSTANCE: method comprises steps of sustaining a material (an alloy) in thixotropic semisolidified condition in an extruder at temperature, being higher, than "solidus" temperature and lower, than "liquidus" temperature with provision of shear deformation; then spraying the material in the form of thixotropic suspension into a press mold; accumulating the alloy, being agitated in a cylinder of the extruder, in an enlarged zone before a nozzle, in which shear deformation of the alloy is being interrupted, and displacing an auger backwards in order to enlarge an accumulation zone with a rate, corresponding to a rate of the alloy displacement to the accumulation zone. EFFECT: enhanced quality of products. 11 cl, 6 dwg, 1 tbl

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RU 2 023 532 C1

Authors

Norbert L.Brehdli[Us]

Rigan D.Vajlend[Us]

Vill'Jam Dzh.Shehffer[Us]

Allen N.Najemi[Us]

Dates

1994-11-30Published

1990-10-09Filed