Electromagnetic valve for controlling the flow of molten, magnetic material

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:871619

Richter, Tomas ^[1]

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1. State College, PA

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 (United States)
• 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

Related Subjects

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
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