Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-04-29
1996-03-05
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164480, 164428, 164503, B22D 1106, B22D 2702
Patent
active
054958865
ABSTRACT:
A magnetic confining method and apparatus in accordance with the present invention generates, adjacent the open side of the roller gap, a primary vertical magnetic field (a) resulting from direct current (D.C.) or alternating current (A.C.) flowing through a coil surrounding a core of a primary electromagnet or (b) resulting from an induced horizontal current flowing through roller shafts, roller sleeves and the edge of the molten metal. There are one or more additional vertical magnetic fields, that serve to concentrate and/or shape the primary magnetic field, and the vertical fields combine to provide electromagnetic forces sufficient for containment of the molten metal in the vertical gap between the rollers. Both the primary vertical field and one or more additional or secondary vertical magnetic fields extend through the open side of the gap to the molten metal in the gap. The combination of magnetic fields cooperate to provide sufficient electromagnetic force over the depth of the molten metal, at the molten metal sidewall to electromagnetically confine the molten metal within the gap between the rollers and stabilize the molten metal at the sidewall.
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Serial No. 08/220,789 Gerber Mar. 31, 1994.
Kolesnichenko, et al., "Electromagnetic Retention of Steel Melt on the Faces of the Roll Mould" Proceedings of The Sixth International Iron and Steel Congress, vol. 4, 1990, Nagoya, ISIJ, pp. 446-453.
Inland Steel Company
Lin Kuang Y.
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