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Electromagnetic valve for controlling the flow of molten, magnetic material

Patent ·
OSTI ID:871619
 [1]
  1. State College, PA
+ Show Author Affiliations
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.
Research Organization:
American Iron and Steel Institute (Washington, DC)
DOE Contract Number:
FC07-93ID13205
Assignee:
American Iron and Steel Institute (Washington, DC)
Patent Number(s):
US 5765730
OSTI ID:
871619
Country of Publication:
United States
Language:
English

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