Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1985-03-28
1987-02-10
Godici, Nicholas P.
Metal founding
Process
Shaping liquid metal against a forming surface
164246, B22C 702
Patent
active
046417028
ABSTRACT:
A method and a die mold for molding destructible investment casting patterns of irregular shapes such as, for instance, investment casting patterns utilized in the production of vane sections for a jet engine turbine, or the like. The die mold comprises a mold cavity defined by surfaces extending arcuately in non-parallel relation, and includes a plurality of separable mold portions including rear, front, and side mold portions preferably movable outwardly with respect to one another and with respect to a mounting base, and also including coacting movable mold cavity insert portions disposed intermediate the first mentioned mold portions, and defining arcuate surface sections of the mold cavity. The invention is characterized by the ability to remove the mold cavity insert portions from the pattern after the molding of the pattern in the mold cavity, and by moving said cavity insert portions through a generally arcuate path with respect to the confronting pattern surfaces, thus accomplishing removal of the mold cavity insert portions without interference with the confronting arcuate surfaces of the pattern, after which removal of the pattern from the die mold can be accomplished. The method of the invention involving arcuate movement of the mold cavity insert portions with respect to the formed pattern is accomplished manually.
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Godici Nicholas P.
Mercury Machine Company
Reid G. M.
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