B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/173, 22/49
B22D 27/02 (2006.01) B22D 23/06 (2006.01)
Patent
CA 1170812
ABSTRACT OF THE DISCLOSURE An apparatus for fine grain casting o prealloyed metal is provided comprising an enclosed chamber; first and second electrodes forming a gap within the enclosed chamber for striking an are therein, wherein at least one of said electrodes is an ingot having a composition corresponding to the composition of a casting to be formed; means for raising the temperature of said first and second electrodes up to the melting point of said at least one electrode thus resulting in molten metal which falls from said electrode; and an open-ended mold arranged so as to directly receive said falling molten metal from said electrode as it melts and drips off said electrode. A method for fine grain casting prealloyed metal comprising the steps of providing first and second electrodes within an enclosed chamber, said first and second electrodes being spaced so as to form a gap between them, at least one of said electrodes being an ingot having a composition corresponding to the composition of a prealloyed continuous casting to be formed; and heating said electrodes to a temperature sufficient to melt said at least one electrode into molten metal which falls from said at least one electrode into a mold wherein the molten metal is at least partially solidified; wherein the improvement comprises causing said molten metal to fall directly from said at least one electrode into a mold so as to result in a casting having a fine grained structure.
351929
Huntington John S.
Soykan Ferhun H.
George H. Riches And Associates
Special Metals Corporation
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