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It was found that, in principle, subliquidus remelting in the electron-beam furnace is possible. The result is an ingot with a fine-grained solidification structure. The degree of purity has to be adjusted in a previous, conventional remelting process. The quality of the ingot surface is probably inferior to that of conventionally melted ingots. Furthermore, it was noted that the subliquidus process is very unstable and not manually controllable, because of inadequate overheating in the pool. The trial ingots are very inhomogeneous over the ingot length and could not be used for commercial purposes. A subliquidus furnace would require automatic process control and highly stable electron guns. It is probable that the subliquidus remelting in such a furnace would be far more expensive than the manufacture of ingots of the same quality using the spraycast process.

Additional information

Authors: HENTRICH R, Krupp Stahl AG, Siegen (DE);DUBKE M, Krupp Stahl AG, Siegen (DE)
Bibliographic Reference: EUR 13502 DE (1991) 52 pp., FS, ECU 6.25
Availability: (2)
ISBN: ISBN 92-826-2681-4
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