Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1988-08-02
1989-09-05
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
1641221, 164125, B22D 2500
Patent
active
048629472
ABSTRACT:
An improved mold has a coating of material having a relatively high emissivity. The surface of the coating has an emissivity which is at least twice as great as the emissivity of the surface of the ceramic mold material. When the mold is removed from a furnace chamber, the surface of the coating radiates heat at a relatively high rate. In one embodiment of the invention, the coating is applied to only a portion of the surface of a ceramic mold. In another embodiment of the invention, the coating of material having a relatively high emissivity is applied to only a portion of a crystal selector on a mold for a single crystal article. The relatively high rate of radiation of heat from the coated portion of the crystal selector increases the rate of growth of an adjacent single crystal grain. If desired, the entire mold can be covered with the coating of material having a relatively high emissivity. The coating of material having a high emissivity may be formed of graphite.
REFERENCES:
patent: 2618032 (1952-11-01), Traenkner
patent: 3153826 (1964-10-01), Horton
patent: 3256574 (1966-06-01), Lirones
patent: 3401735 (1968-09-01), Pursall
patent: 3494709 (1970-02-01), Piearcey
patent: 3645767 (1972-02-01), Taylor
patent: 3683996 (1972-08-01), Dunlop
patent: 4133368 (1979-01-01), Hayes
patent: 4475582 (1984-10-01), Giamei et al.
patent: 4549599 (1985-10-01), Reiner et al.
patent: 4550764 (1985-11-01), Horton et al.
Publication entitled DYLON DATA (three pages), exact publication date unknown, however publication occurred prior to Jan. 1, 1988.
Graham Lawrence D.
Horton Robert A.
Jeyarajan Arunachalam
Lin Kuang Y.
PCC Airfoils, Inc.
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