Casting process for the production of castings by directional or

Details Casting process for the production of castings by directional or Casting process for the production of castings by directional or

1993-04-21

1994-01-04

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

1643381, 164361, B22D 2704

Patent

active

052752275

ABSTRACT:
A process for the production of castings by directional or monocrystalline solidification is carried out in a vacuum casting plant which, apart from a conventional cooling plate, has no additional heating devices for the casting mold. The unidirectional heat flow required to guide the solidification front is produced on the one hand, by heat sources formed partially from superheated melt and, on the other hand, by heat sinks consisting of the cooling plate and the surroundings of the mold. The mold is heated in a separate heating-up oven to a temperature above the liquidus temperature of the melt in order that the casting mold may contribute to the heat source in addition to the melt so doing.

REFERENCES:
patent: 2943007 (1960-06-01), Walter et al.
patent: 3926245 (1975-12-01), Kanaby
patent: 4966225 (1990-10-01), Johnson et al.
Fonderie, No. 12, Feb. 1982, Paris, France, M. H. Khan: "La Solidification Dirigee", pp. 17-23.
Metals Handbook, Ninth Edition, vol. 15, Casting, 1988, pp. 319-323 and 400-401.

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