Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1990-06-22
1991-11-05
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164361, B22D 904
Patent
active
050624695
ABSTRACT:
A mold is used to cast an article as a single crystal having selected primary and secondary orientations. The mold includes an article mold having a configuration corresponding to the configuration of the article to be cast. A starter section contains a starter cavity in which one or more crystals form. A seed crystal is disposed in the starter cavity. A crystal selector has a passage which extends between an upper end of the starter and a lower end of the article mold. To promote the growth in the crystal selector passage of a crystal having primary and secondary orientations corresponding to the selected primary and secondary orientations of the article, the longitudinal central axis of the crystal selector passage is disposed in a single plane which is parallel to a plane containing the selected primary orientation axis of the single crystal article and the selected secondary orientation axis of the single crystal article.
REFERENCES:
patent: 3542120 (1970-11-01), Piearcey
patent: 4180119 (1979-12-01), Burd et al.
patent: 4469161 (1984-09-01), Higginbotham et al.
patent: 4475582 (1984-10-01), Giamei et al.
patent: 4548255 (1985-10-01), Reiner et al.
patent: 4714101 (1987-12-01), Terkelsen
Graham Lawrence D.
Jeyarajan Arunachalam
Monte Louis H.
Lin Kuang Y.
PCC Airfoils, Inc.
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