METHOD AND APPARATUS FOR CASTING METALS Russian patent published in 1995 - IPC

FIELD: casting production. SUBSTANCE: method comprises steps of measuring ionization degree of an atmosphere around a stream in its upper portion, providing protection of the stream from oxidation by creation around it of an electrostatic field with a field intensity, equal to a ionization degree, being measured. Apparatus for performing the method is provided by two electrodes, a high voltage source, an automatic regulator, a measuring circuit. One of the electrodes in the form of a metallic ring is arranged under a feeding tank coaxially with a casting nozzle, and it is connected with an input of the measuring circuits. The other electrodes in the form of a grid cylinder is placed on a receiving reservoir with the use of an electroinsulating gasket, and it is connected with a positive terminal of the high voltage source, whose negative terminal is connected with a zero contour "ground". An output of the measuring circuit is connected with an input of the automatic regulator, whose output is connected through an actuating mechanism with a shaft of a regulator, operating with use of the high voltage source. EFFECT: enhanced serviceability. 1 cl, 2 dwg