Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1993-11-12
1994-10-18
Batten, Jr., J. Reed
Metal founding
Process
Shaping liquid metal against a forming surface
164132, 164138, B22C 300, B22C 910, B22D 2900, B22D 1802
Patent
active
053559339
ABSTRACT:
A melt-out zinc core is coated with insulating mica material and a graphite release agent and supported within a die cavity of a high pressure squeeze casting apparatus. Molten casting metal having a melting temperature above that of the core is injected into the die and then pressurized to about 15,000 psi to squeeze form the article in the die and around the core. The resultant article and core are then heated to above the melting temperature of the core and the core extracted from the article through cast-in outlet openings formed by the core. The insulating material and release agent are also extracted from the cast article by rinsing the cored passages of the cast article with water.
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An English translation of the Abstract is attached to the front of the following Japanese patents: JP52014521; JP63183769; JP63199060; JP73032053.
Batten, Jr. J. Reed
CMI International Inc.
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