Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1979-11-23
1982-03-30
Baldwin, Robert D.
Metal founding
Process
Shaping liquid metal against a forming surface
164503, B22D 2702
Patent
active
043219594
ABSTRACT:
A method and apparatus for electromagnetic casting of metal and alloy ingots of desired shape having portions of small radius of curvature. A modified shield is provided which provides for a reduction of the electromagnetic field intensity at the corners of the forming ingot by increasing local screening of the field at the corners. Increased local screening at the corners is achieved by locally increasing shield depth, by providing for deeper displacement of the shield, by changing the shield section, or by changing the shield orientation. Also disclosed is a modified inductor which is shaped so as to be located at a greater distance from the portions of small radius of curvature of the ingots than from portions of the ingots adjacent to the portions of small radius of curvature. The modified shield may be combined with the modified inductor and/or with a coolant manifold to simultaneously modify and control coolant application elevation such that the elevation is a minimum at the corners of the ingot.
REFERENCES:
patent: 3702155 (1972-11-01), Getselev
patent: 4135568 (1979-01-01), Brook
patent: 4158379 (1979-06-01), Yarwood et al.
patent: 4161206 (1979-07-01), Yarwood et al.
patent: 4215738 (1980-08-01), Gaule et al.
patent: 4216817 (1980-08-01), Meier
Gaule Gerhart K.
Tyler Derek E.
Ungarean Gary L.
Yarwood John C.
Baldwin Robert D.
Cohn Howard M.
Lin K. Y.
Olin Corporation
Weinstein Paul
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