Constant voltage electro-slag remelting control

Details Constant voltage electro-slag remelting control Constant voltage electro-slag remelting control

1995-05-16

1996-10-22

Hoang, Tu

Industrial electric heating furnaces

Electroslag remelting device

Power supply system

373 47, 373 70, 373105, H05B 360

Patent

active

055685064

ABSTRACT:
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.

REFERENCES:
patent: 4075414 (1978-02-01), Thomas
patent: 4096344 (1978-06-01), Munson
patent: 4303797 (1981-12-01), Roberts
patent: 4397028 (1983-08-01), Dunn et al.
patent: 4742528 (1988-05-01), Stenzel
patent: 4797897 (1989-01-01), Stenzel et al.
patent: 5331661 (1994-07-01), Maguire et al.

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