Control of electrode depth in electroslag remelting
Abstract
A method of and apparatus for controlling an electroslag remelting furnace by driving the electrode at a nominal speed based upon melting rate and geometry while making minor proportional adjustments based on a measured metric of the electrode immersion depth. Electrode drive speed is increased if a measured metric of electrode immersion depth differs from a set point by a predetermined amount, indicating that the tip is too close to the surface of a slag pool. Impedance spikes are monitored to adjust the set point for the metric of electrode immersion depth based upon one or more properties of the impedance spikes.
- Inventors:
-
- Albuquerque, NM
- Tijeras, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 874950
- Patent Number(s):
- 6496530
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- control; electrode; depth; electroslag; remelting; method; apparatus; controlling; furnace; driving; nominal; speed; based; melting; rate; geometry; minor; proportional; adjustments; measured; metric; immersion; drive; increased; differs; set; predetermined; amount; indicating; tip; close; surface; slag; pool; impedance; spikes; monitored; adjust; properties; predetermined amount; melting furnace; /373/
Citation Formats
Melgaard, David K, Shelmidine, Gregory J, and Damkroger, Brian K. Control of electrode depth in electroslag remelting. United States: N. p., 2002.
Web.
Melgaard, David K, Shelmidine, Gregory J, & Damkroger, Brian K. Control of electrode depth in electroslag remelting. United States.
Melgaard, David K, Shelmidine, Gregory J, and Damkroger, Brian K. Tue .
"Control of electrode depth in electroslag remelting". United States. https://www.osti.gov/servlets/purl/874950.
@article{osti_874950,
title = {Control of electrode depth in electroslag remelting},
author = {Melgaard, David K and Shelmidine, Gregory J and Damkroger, Brian K},
abstractNote = {A method of and apparatus for controlling an electroslag remelting furnace by driving the electrode at a nominal speed based upon melting rate and geometry while making minor proportional adjustments based on a measured metric of the electrode immersion depth. Electrode drive speed is increased if a measured metric of electrode immersion depth differs from a set point by a predetermined amount, indicating that the tip is too close to the surface of a slag pool. Impedance spikes are monitored to adjust the set point for the metric of electrode immersion depth based upon one or more properties of the impedance spikes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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