Apparatus and process for controlling the flow of a metal stream

Details Apparatus and process for controlling the flow of a metal stream Apparatus and process for controlling the flow of a metal stream

1992-02-11

1993-03-30

Kastler, Scott

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

266 78, 222592, B22D 4160

Patent

active

051980177

ABSTRACT:
An apparatus that controls the flow of a stream of metal, such as produced from the bottom of a hearth, includes a cylindrical metallic nozzle body having a hollow wall which includes a slit extending substantially parallel to the axis of the cylinder so that there is no electrical continuity around the nozzle wall across the slit. The walls of the cylinder are preferably formed of hollow tubes through which cooling water is passed. A sensor senses a performance characteristic of the apparatus, such as the temperature of the nozzle body. An induction heating coil surrounds the nozzle body, and a controllable induction heating power supply is connected to the induction heating coil to provide power. A controller controls the power provided to the induction heating coil by the induction heating power supply responsive to an output signal of the sensor, so that a selected performance characteristic of the apparatus may be maintained.

REFERENCES:
patent: 2618013 (1952-11-01), Weigand et al.
patent: 3099041 (1963-07-01), Kaufmann
patent: 3342250 (1967-09-01), Treppschuh et al.
patent: 3826598 (1974-07-01), Kaufmann
patent: 4067674 (1978-01-01), Devillard
patent: 4218410 (1980-08-01), Stephan et al.
patent: 4966201 (1990-10-01), Svec et al.

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