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Title: Electromagnetic valve for controlling the flow of molten, magnetic material

Abstract

An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell.

Inventors:
 [1]
  1. State College, PA
Publication Date:
Research Org.:
American Iron and Steel Institute (Washington, DC)
OSTI Identifier:
871619
Patent Number(s):
US 5765730
Assignee:
American Iron and Steel Institute (Washington, DC)
DOE Contract Number:  
FC07-93ID13205
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electromagnetic; valve; controlling; flow; molten; magnetic; material; provided; comprises; induction; coil; generating; field; response; applied; alternating; electrical; current; housing; refractory; composite; nozzle; comprised; inner; sleeve; composed; erosion; resistant; zirconia; ceramic; metal; flows; outer; shell; intermediate; compressible; unset; alumina; thermosetting; mortar; sandwiched; absorbs; differential; expansion; stresses; due; extreme; thermal; gradients; layer; prevents; destructive; cracks; developing; metal flow; thermal gradient; inner sleeve; induction coil; refractory material; outer shell; magnetic field; electrical current; magnetic material; differential expansion; alternating electric; composite nozzle; thermal gradients; erosion resistant; refractory composite; expansion stresses; electromagnetic valve; /222/266/

Citation Formats

Richter, Tomas. Electromagnetic valve for controlling the flow of molten, magnetic material. United States: N. p., 1998. Web.
Richter, Tomas. Electromagnetic valve for controlling the flow of molten, magnetic material. United States.
Richter, Tomas. Thu . "Electromagnetic valve for controlling the flow of molten, magnetic material". United States. https://www.osti.gov/servlets/purl/871619.
@article{osti_871619,
title = {Electromagnetic valve for controlling the flow of molten, magnetic material},
author = {Richter, Tomas},
abstractNote = {An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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