Abstract
To prevent the nucleation of crystals on the mold wall in the continuous casting of metals, a heated mold that maintained that temperature above the solidification temperature of the cast metal was used instead of the conventional cold mold. The cooling of the ingot was conducted outside of the mold. Heat was conducted axially along the ingot from the mold zone to the cooling zone.
The principle of the O.C.C. (Ohno Continuous Casting) Process® was applied to the horizontal casting and vertical (upward) casting of wire and platelike ingots of Sn and Al. The ingots consisted of a completely unidirectionally solidified structure. It was possible to obtain a long single crystal ingot as a result of the growth competition of crystals.
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References
B. Chalmers, Principles of Solidification, p. 301, John Wiley & Sons, Inc., New York, 1964.
J. Czochralski, Z. Physik. Chem., 92, 219 (1917).
W.C. Winegard, Introduction to the Solidification of Metals, p. 87, The Institute of Metals, England, 1964.
A. Ohno, U.S.A. Patent 4,515,204; German Patent 3,246,470; Japanese Patent, 1,049,146; Canadian Patent 1,188,481.
Additional information
A. Ohno is currently with the Chibat Institute of Technology of Narashino, Chiba-ken, Japan.
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Ohno, A. Continuous Casting of Single Crystal Ingots by the O.C.C. Process. JOM 38, 14–16 (1986). https://doi.org/10.1007/BF03257948
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DOI: https://doi.org/10.1007/BF03257948