Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1976-01-26
1978-04-25
Husar, Francis S.
Metal founding
Process
Shaping liquid metal against a forming surface
164113, 164305, 164318, B22D 2720, B22D 1704
Patent
active
040857913
ABSTRACT:
In a hot chamber method of pore-free die casting in which a reactive gas flushes non-reactive gas such as air from a die before a material is cast therein, the material displaces non-reactive gas from the gooseneck and nozzle through which the die is filled before the reactive gas flushes the die. The material then does not push non-reactive gas into the die as it fills the die. Apparatus for practicing the method comprises servo-control means for filling the gooseneck and nozzle with the material before the reactive gas flushes the die to displace non-reactive gas therefrom and then filling the die with the material after the reactive gas has flushed the die.
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Mitamura et al., "Method of Replacing Air Inside the Nozzle of a Hot Chamber Die Casting Machine with Active Gas," Toshiba Machine Co. Inc.; Public Patent Bulletin, 2/14/1974.
Kaiser, W. D. et al., "Design of a Servo Injection System for Die Casting," The Society of Die Casting Engineers, Inc., Paper No. 52, 1970.
Die Casting: Pore-Free Die Casting, Machine And Production Engineering, vol. 121, No. 3115, 7/26/1972, pp. 129-134.
Hampilos Gus T.
Husar Francis S.
International Lead Zinc Research Organization, Inc.
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