Metal founding – Means to shape a forming surface – Including means applying vacuum directly to mold material
Patent
1977-12-07
1979-05-15
Baldwin, Robert D.
Metal founding
Means to shape a forming surface
Including means applying vacuum directly to mold material
425551, 425585, B29F 108
Patent
active
041542878
ABSTRACT:
The present invention relates to equipment used for investment casting and may find application in various fields of engineering to enable automation of the process of manufacturing easily fusible patterns.
The proposed apparatus comprises a pressure casting die formed of two parts, one of which is mounted for reciprocated movement in the horizontal, an injection means formed of a heated body with a chamber to receive a pattern material, an air cylinder with a hollow piston and a hollow rod, a means for evacuating the chamber and the pressure casting die cavity after introducing a pattern material therein, and a means for supplying a fluid to the pressure casting die upon evacuation of the latter, said fluid supply means comprising a moving element fitted with a channel adapted to intermittently communicate a fluid source with the pressure casting die cavity.
The apparatus also incorporates a heated receptacle for a pattern material, intermittently communicating with the chamber of the injection means, and an intermediate means formed with a horizontally extending channel accommodating the moving element.
Such structural arrangement makes it possible to enhance efficiency of the proposed apparatus, obtain distinct imprint of the pressure casting die surface, and reduce pattern cooling time.
REFERENCES:
patent: 2359840 (1944-10-01), Goessling
patent: 2514884 (1950-07-01), Maynard
Gajun Jury A.
Junichenko Viktor A.
Kharagezov Yakov A.
Kotenko Stalina P.
Mkrtychian Anatoly A.
Baldwin Robert D.
Rostovsky-na-Donu-Nauchno-Issledovatelsky Institut Tekhnologii
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