Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-11-14
1997-03-04
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164333, 164334, B22D 1908
Patent
active
056070063
ABSTRACT:
A method for casting metals around an article having a bore extending along a central axis and defined at least in part by an interior cylindrical wall portion utilizes a mandrel having a cylindrical exterior surface portion sized to be slidingly positioned in said bore in close relationship with said interior cylindrical wall portion. The mandrel has an annular groove in which is positioned a canted coil spring with a series of outer contact points extending radially outwardly beyond said cylindrical exterior surface portion. The article is moved onto the mandrel to compress the spring and deflect the outer contact points such that the spring imparts an outwardly directed force to the article interior cylindrical wall portion to provide frictional resistance between the spring, outer contact points and the interior cylindrical wall portion to retain the article on the mandrel while casting molten metal around the mandrel supported article to form a cast part.
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Doehler-Jarvis Technologies, Inc.
Lin Kuang Y.
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