Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1991-10-04
1993-05-04
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164332, B22D 1916
Patent
active
052077764
ABSTRACT:
A bi-metallic extrusion billet perform is produced in a single casting. An inner core made of a desired material is placed in the center of a crucible or mold as a prepared bar. Molten cladding material is cast into an annular area between the outside surface of the inner core and an inner surface of the crucible or mold. Bottom pouring is enabled through the center of the inner core, which has been appropriately provided with a hole of a size that is consistent with the extrusion press and the required extruded hollow size involved in later manufacturing steps. The entire operation, including the melting of the cladding material, is advantageously performed under a vacuum to eliminate the risk of trapping air at an interface between the inner core and the cladding material cost therearound.
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Edwards Robert J.
Marich Eric
Matas Vytas R.
Puknys Eric R.
Seidel Richard K.
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