Industrial electric heating furnaces – Arc furnace device – Ingot remelting
Patent
1986-08-12
1988-05-03
Envall, Jr., Roy N.
Industrial electric heating furnaces
Arc furnace device
Ingot remelting
373105, 373 50, H05B 7148
Patent
active
047425288
ABSTRACT:
A compensation device for the influence of the weight of a power feed line on a weight measurement device determining the weight of an electrode and/or the melting rate in an electro-slag remelting process, in a vacuum arc furnace or the like. When an x-y device is adjusted, a weight jump occurs due to the forces of the power cable or the forces of the bellows, which has a disturbing effect on the rate definition. This weight jump can be prevented by means of mechanical devices, or can be made so small that it no longer constitutes a disturbance. However, the expenditure for this is disproportionately high. The invention is more cost efficient, since hardware or software means suffice. The weight function G=f(t) is extrapolated and compared with the actually measured weight G'=f(t). The magnitude of the difference between the two is stored and later added as a correction value.
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Envall Jr. Roy N.
Leybold-Heraeus GmbH
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