Method of electrode regulation of a DC arc furnace and electrode regulation device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 2, 1996
Grant Date -
N/A
app pub date -
Dec 29, 1994
filing date -
Dec 29, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
DC arc furnaces have a current regulator for maintaining the current of an arc constant and an electrode regulator for affecting the position of an electrode of the arc furnace and thus the length of the are. Adjustment of the position of the electrode takes place by a hydraulic electrode adjustment device, which is controlled as a function of the difference between a predeterminable electrode regulator command variable signal and a voltage actual signal. The arc length is adjusted in such a way that a rectifier operates on the average with a deflection of, for example, 35.degree. el., independently of the secondary voltage of a furnace transformer and a set current set value. To be able to better protect the wall of the arc furnace and to better utilize the fed-in energy during operation with foaming slag, the arc length is automatically adapted to a slag height. The electrode regulator set value signal is calculated by a computer as a function of an arc field strength and a loudness signal which was detected by a loudness detector.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully