B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/49
B22D 23/00 (2006.01) B22D 11/01 (2006.01)
Patent
CA 1165089
ABSTRACT OF THE DISCLOSURE A method and apparatus for electromagnetic casting of castable materials including, but not restricted to, metals and alloys and silicon or other similar semi-metals, metall- oids, and semi-conductors 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 in- creasing local screening of the field at the corners. In- creased 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 discussed is a modified in- ductor which is shaped so as to be located at a greater dis- tance from the portions of small radius of curvature of the ingots than form portions of the ingots adjacent to the por- tions 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 applic- ation elevation such that the elevation is a minimum at the corners of the ingot.
353504
Gaule Gerhart K.
Tyler Derek E.
Ungarean Gary L.
Yarwood John C.
Olin Corporation
Swabey Ogilvy Renault
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