Method and apparatus for directional solidification

Details Method and apparatus for directional solidification Method and apparatus for directional solidification

1974-10-03

1976-09-21

Husar, Francis S.

Metal founding

Process

Shaping liquid metal against a forming surface

164127, 164361, 164364, B22D 2506

Patent

active

039813460

ABSTRACT:
In making columnar grained castings the shell mold is spaced from the chill plate by a ceramic ring on which the mold is positioned, the ring being made thicker and/or of a different ceramic from the mold to withstand the thermal stress developing while the mold is being heated for pouring, so that the mold, not being subjected to such stresses at the base, may be made thinner for producing better castings. In this way the best mold material for the purpose may be selected, as, for example, a material to have no reaction with the alloy and, by lowering the thermal gradient decrease the likelihood of mold failure.

REFERENCES:
patent: 3514069 (1970-05-01), Daley
patent: 3532155 (1970-10-01), Kane et al.
patent: 3678988 (1972-07-01), Tien et al.

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