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Title: Constant voltage electro-slag remelting control

A system for controlling electrode gap in an electro-slag remelt furnace has a constant regulated voltage and an eletrode which is fed into the slag pool at a constant rate. The impedance of the circuit through the slag pool is directly proportional to the gap distance. Because of the constant voltage, the system current changes are inversely proportional to changes in gap. This negative feedback causes the gap to remain stable.
Inventors:
 [1]
  1. (Albuquerque, NM)
Issue Date:
OSTI Identifier:
870658
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
Patent Number(s):
US 5568506
Contract Number:
AC04-76DP00789
Research Org:
AT & T CORP
Country of Publication:
United States
Language:
English
Subject:
constant; voltage; electro-slag; remelting; control; controlling; electrode; gap; remelt; furnace; regulated; eletrode; fed; slag; pool; rate; impedance; circuit; directly; proportional; distance; current; changes; inversely; negative; feedback; causes; remain; stable; electrode gap; constant voltage; directly proportional; negative feedback; constant rate; controlling electrode; inversely proportional; regulated voltage; /373/