Method and apparatus for feeding molten metal to an ingot during

Details Method and apparatus for feeding molten metal to an ingot during Method and apparatus for feeding molten metal to an ingot during

1978-02-02

1979-09-18

Simpson, Othell M.

Metal founding

Process

Shaping liquid metal against a forming surface

164252, B22D 2702

Patent

active

041679636

ABSTRACT:
Molten metal is fed to an ingot during solidification, in order to compensate for shrinkage and segregation, by electroslag remelting (ESR). The electrodes are positioned entirely in the slag and comprise an inner electrode surrounded by an outer electrode, so that current flow is substantially horizontal through the slag. Powdered solid slag can be filled in the space between the electrodes before ESR begins; and for this purpose, the lower end of the outer or surrounding electrode is temporarily closed by a metal sheet which melts when the current is turned on, thereby to release molten slag onto the bath at the top of the ingot. The electrode arrangement is useful both with consumable and with nonconsumable electrodes.

REFERENCES:
patent: 4055215 (1977-10-01), Ramacciotti et al.

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