FIELD: metallurgy.
SUBSTANCE: invention refers to specific electro-metallurgy, particularly to vacuum arc re-melting of high reaction metals and alloys and can be implemented at melting ingots out of titanium alloys. The procedure for control consists in determination of actual value of a spark gap and in adjusting position of a consumable electrode relative to a melted ingot by results of arc voltage measurements, in successive selection of current pulses of reverse polarity and in measuring their duration. An interface and normalising block regulating an input signal to a specified value at bandwidth 50 kHz is arranged in the installation. A computer recognises voltage pulses of reverse polarity and duration in a specified range at sampling frequency not less, than 40 kHz.
EFFECT: upgraded accuracy of measurement.
2 cl, 2 dwg, 1 ex
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