Process for lost-foam casting with chill

Details Process for lost-foam casting with chill Process for lost-foam casting with chill

2008-04-22

2008-04-22

Lin, Kuang (Department: 1793)

Metal founding

Process

Shaping a forming surface

C164S516000

Reexamination Certificate

active

11475500

ABSTRACT:
Process for the Lost-foam casting of aluminum or magnesium including spacing the cooling face of a chill from a selected surface of a pyrolizable polymeric foam pattern so as to provide at least a 0.5 mm gap therebetween, and filling the gap with Al or Mg melt so as to displace any pyrolysis products therein away from the cooling face, and otherwise prevent such products from becoming trapped by the melt against the cooling face of the chill.

REFERENCES:
patent: 4520858 (1985-06-01), Ryntz, Jr. et al.
patent: 2004/0244934 (2004-12-01), Narushima et al.

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