Consumable molding process for super alloys

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

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164 591, 164 61, 164 65, 428576, 428941, 420590, C21C 700, C22B 912

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active

044027435

ABSTRACT:
A method of preparing a charge of super alloy material for use in metal casting is disclosed. Thin wall tubes consisting of one of the metallic elements of the alloy material, or an alloy of such element are provided. If an alloy tube is selected, all elements in the tube alloy must also be materials included in the overall formulation of the alloy material. The type and quantity of the materials contained in the tubes is deducted from the quantities set forth in the overall formula and the balance of the formula is melted and poured under vacuum as a core in the tube using the tube as a mold. The resulting master charge is cut into unit charges each of a predetermined weight. These unit charges are then used in a subsequent casting operation by melting the entire unit charge under vacuum to cast precision products of an alloy which consists of the mixed and alloyed materials of both the tube and the core.

REFERENCES:
patent: 2528406 (1950-10-01), Wulff
patent: 3466166 (1969-09-01), Levinstein et al.
patent: 3719470 (1973-03-01), Vanderschueren
patent: 3915693 (1975-10-01), Rasmussen
patent: 4008052 (1977-02-01), Vishnevsky et al.
patent: 4240495 (1980-12-01), Vonnegat

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