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

An apparatus and method 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.
Inventors:
 [1];  [2];  [3]
  1. (Albuquerque, NM)
  2. (Sandia Park, NM)
  3. (Glenwood, WV)
Issue Date:
OSTI Identifier:
870904
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
Patent Number(s):
US 5621751
Contract Number:
AC04-76DP00789
Research Org:
AT & T CORP
Country of Publication:
United States
Language:
English
Subject:
controlling; electrode; gap; vacuum; remelting; melting; current; apparatus; method; furnace; particularly; currents; spectrographic; analysis; performed; metal; vapor; plasma; estimates; derived; electrode gap; metal vapor; vapor plasma; remelting furnace; controlling electrode; spectrographic analysis; melting current; melting furnace; /373/