Method and apparatus for pore-free die casting

Details Method and apparatus for pore-free die casting Method and apparatus for pore-free die casting

B - Operations, Transporting

22

D

22/172, 22/67

B22D 17/04 (2006.01) B22D 17/14 (2006.01)

Patent

CA 1087365

ABSTRACT OF THE DISCLOSURE 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.

270316

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