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Title: Controlling electrode gap during vacuum arc remelting at low melting current

An apparatus and method are disclosed for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived. 5 figs.
Inventors:
; ;
Issue Date:
OSTI Identifier:
462857
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 320303; PA: EDB-97:061520; SN: 97001767248
Patent Number(s):
US 5,621,751/A/
Application Number:
PAN: 8-426,532
Contract Number:
AC04-76DP00789
Resource Relation:
Other Information: PBD: 15 Apr 1997
Research Org:
AT&T Corporation
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ARC FURNACES; MELTING; PLASMA DIAGNOSTICS; ELECTRODES; DESIGN; CONTROL EQUIPMENT; VACUUM FURNACES