Method and apparatus for monitoring the melting process in vacuu

Details Method and apparatus for monitoring the melting process in vacuu Method and apparatus for monitoring the melting process in vacuu

1982-05-25

1984-03-06

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Power supply system

373 70, H05B 7144

Patent

active

044358180

ABSTRACT:
A method and apparatus for vacuum arc furnaces monitors the arc by spectrum analysis of the arc's light obtained with a radiation receiver. Upon the occurrence of spectrum lines indicating vaporization of the crucible material, the melting process is stopped or adjusted to extinguish the arc burning on the crucible which vaporized the crucible material for the spectrum analysis.

REFERENCES:
patent: 2907807 (1959-10-01), Noesen
patent: 3371140 (1968-02-01), Wynne

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