Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1997-09-12
2000-06-06
Batten, Jr., J. Reed
Metal founding
Process
Shaping liquid metal against a forming surface
164 65, 164113, 164256, 164258, B22D 1714, B22D 2715
Patent
active
060706430
ABSTRACT:
A metal or alloy is melted in a vaccuum chamber disposed about an end of a shot sleeve. The opposite end of the shot sleeve is communicated to a die cavity between first and second dies which are disposed in ambient air atmosphere. The dies have one or more vacuum seals therebetween extending about the die cavity to isolate the die cavity from the ambient air atmosphere when the dies are closed. A vacuum thereby is provided in the die cavity through the shot sleeve when the vacuum chamber is evacuated despite the dies being disposed in ambient air atmosphere. The first and second dies are opened after the metal or alloy is die cast in the die cavity for ready removal of the cast component from the die cavity directly to the ambient air atmosphere and then to an optional quenchant medium proximate the dies.
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Abstract of Japanese Patent Publication 4-71763 Published Mar. 6, 1992.
Batten, Jr. J. Reed
Howmet Research Corporation
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