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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 electrode 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. 1 fig.
Inventors:
Issue Date:
OSTI Identifier:
392637
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 360101; PA: EDB-96:165757; SN: 96001682421
Patent Number(s):
US 5,568,506/A/
Application Number:
PAN: 8-442,545
Contract Number:
AC04-76DP00789
Resource Relation:
Other Information: PBD: 22 Oct 1996
Research Org:
AT&T Corporation
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTROSLAG CASTING; ARC FURNACES; VOLTAGE REGULATORS; PROCESS CONTROL; ELECTRODES; POSITIONING