US3856284A - Container for hot liquid metals - Google Patents

Container for hot liquid metals Download PDF

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Publication number
US3856284A
US3856284A US00389532A US38953273A US3856284A US 3856284 A US3856284 A US 3856284A US 00389532 A US00389532 A US 00389532A US 38953273 A US38953273 A US 38953273A US 3856284 A US3856284 A US 3856284A
Authority
US
United States
Prior art keywords
container
stone
gas
metal
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00389532A
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English (en)
Inventor
O Hoyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3856284A publication Critical patent/US3856284A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection

Definitions

  • the invention relates to a container for hot liquid metals comprising a refractory lining and a bottom in which a porous, gas-permeable, refractory stone is inserted to which a conduit is joined through which a gas is blown into the liquid metal and which at least in the area below the stone is made of an easily separable material. Below the flush stone a slide is arranged through the bore of which the gas conduit is guided, and which is connected with an actuating means for closing the bore.
  • the invention relates to a container for hot liquid metals with a refractory lining, such as a casting ladle or tundish of a continuous casting plant or the like, in the bottom of which a porous, gas-permeable, refractory stone is inserted, to which a conduit is joined through which a gas is blown into the liquid metal.
  • a refractory lining such as a casting ladle or tundish of a continuous casting plant or the like
  • Such steel out-breaks are a particular nuisance in ladles which are inserted in containers that can be evacuated, in which while the liquid steel is degassed flush gas is blown through the ladle bottom.
  • Porous flush stones of the mentioned kind may also be built into tundishes of continuous casting plants in order to create a gas veil in a direction transverse to the current of the metal and thus to flush non-metallic particles, for
  • alumina particles to the surface of the metal.
  • the invention is aimed at avoiding the described disadvantages and at increasing the operational safety of such containers for hot liquid metals. It is the task of the invention to create a simple protection device by means of which damages should be avoided in case the metal breaks out. In a container of the kind defined in the introduction this task is solved according to invention by a combination of the following features:
  • the gas conduit at least in the area below the porous stone, is made of an easily separable material, e.g., of plastic material;
  • a slide having a bore is arranged, preferably to be guided between two sliding plates, the gas conduit extending within said bore;
  • the slide is connected with an activating means for closing the bore, whereby under consideration of the friction resistance, the closing force is greater than the resistance of the material of the gas conduit when it is separated through.
  • the feeler may comprise a wire which is electrically insulated relative to the container; the wire is connected with one pole of the supply point and a signal means may be provided which is electrically connected with the other pole of the supply point and the container, so that in case the metal breaks out an electrically conductive connection is created between the metal wire and the container as the insulation of the metal wire is destroyed and the signal means is actuated.
  • the drawing is a vertical sectional view of a bottom containing a built-in porous, gas-permeable, refractory stone of a metallurgical container, which bottom is provided with a means according to the invention.
  • numeral 1 denotes the bottom made of refractory material of a container for liquid metal 2, e.g., of a ladle for casting steel.
  • a porous, gas-permeable refractory stone 3 together with its shell 4 surrounding its lower part can be inserted into the bottom 1.
  • a gas conduit 5 made of plastic material is joined to the shell 4.
  • the gas ascending in the liquid metal 2 is denoted with 6.
  • an electrical wire e.g., a wire spiral 8 is inserted, which is insulated relative to the stone 3 or to the bottom 1, respectively.
  • the metal wire of the wire spiral 8 is connected with the one pole of a supply point 11, supplying for example alternating current of 42 Volt tension, via a conduit 9 and a fuse 10.
  • the other pole of the supply point 11 is connected via a conduit 12 and a fuse 13 with a signal means 14, e.g., an acoustic alarm means, a blinker, or the like.
  • the signal means 14 in its turn is electrically conductively connected with the mass, i.e., with the steel jacket 15 of the container bottom 1.
  • the plates 16,17 and the slide 18 are made I of refractory material and are able to withstand the pressure and the attack of the liquid metal 2 until the melt is cast in customary manner into an outflow not shown.
  • the slide 18 is suitably connected with a piston rod 20 of a piston 21, which may hydraulically or pneumatically be actuated, of a cylinder 22.
  • the closing force of the cylinder 22 is such that not only the friction between the slide 18 and the plates 16,17 can be overcome but it is also sufficient to separate the plastic material conduit 5 and the metal wire 9.
  • the slide 18 is opened and dismounted from the ladle bottom 15; the intruded steel is cleared from the area around the built-in flush stone 3 which is built out and may be replaced by a new stone.
  • the slide 18 may be also closed automatically.
  • the conduit 23 the conduit 12 may be connected with a relay switched in parallel or with a contractor 24 so that a switch 25 is actuated which closes a current conduit 26 which is connected with a steering aggregate not shown for actuating the cylinder 22 so that immediately when the signal means 14 is actuated the slide 18 is closed.
  • Any customary slide can be used which is known in the art for casting liquid steel or for closing the outflow openings of ladles.
  • a container for hot liquid metals comprising a refractory lining and a bottom in which a porous, gaspermeable, refractory stone is inserted to which a confeeler comprises a wire which is electrically insulated relative to the container and connected with one pole of a supply point and wherein a signal means is pro vided which is electrically connected with the other pole of the supply point and the container, so that in case the metal breaks out an electrically conductive connection is created between the metal wire and the container as the insulation of the metal wire is destroyed and the signal means is actuated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
US00389532A 1972-08-21 1973-08-20 Container for hot liquid metals Expired - Lifetime US3856284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT718372A AT324386B (de) 1972-08-21 1972-08-21 Behalter für schmelzflüssige metalle

Publications (1)

Publication Number Publication Date
US3856284A true US3856284A (en) 1974-12-24

Family

ID=3593512

Family Applications (1)

Application Number Title Priority Date Filing Date
US00389532A Expired - Lifetime US3856284A (en) 1972-08-21 1973-08-20 Container for hot liquid metals

Country Status (11)

Country Link
US (1) US3856284A (xx)
JP (1) JPS5223605B2 (xx)
AT (1) AT324386B (xx)
BE (1) BE803787A (xx)
BR (1) BR7306402D0 (xx)
CA (1) CA998242A (xx)
FI (1) FI52402C (xx)
IT (1) IT990370B (xx)
LU (1) LU68262A1 (xx)
SE (1) SE382827B (xx)
ZA (1) ZA735654B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481809A (en) * 1983-08-29 1984-11-13 Labate M D Method and apparatus for monitoring erosion in gas stirring devices in molten metal ladles
US4749172A (en) * 1985-12-03 1988-06-07 Pol Detalle Device for detecting the wear of bricks for blowing fluids into liquid metals
US5007366A (en) * 1988-04-13 1991-04-16 Veitscher Magnesitwerke-Actien-Gesellschaft Refractory gas permeable bubbling plug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
US3773226A (en) * 1970-04-23 1973-11-20 Didier Werke Ag Container with sliding shutter for a liquid melt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
US3773226A (en) * 1970-04-23 1973-11-20 Didier Werke Ag Container with sliding shutter for a liquid melt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481809A (en) * 1983-08-29 1984-11-13 Labate M D Method and apparatus for monitoring erosion in gas stirring devices in molten metal ladles
US4749172A (en) * 1985-12-03 1988-06-07 Pol Detalle Device for detecting the wear of bricks for blowing fluids into liquid metals
US5007366A (en) * 1988-04-13 1991-04-16 Veitscher Magnesitwerke-Actien-Gesellschaft Refractory gas permeable bubbling plug

Also Published As

Publication number Publication date
JPS5223605B2 (xx) 1977-06-25
LU68262A1 (xx) 1973-10-24
FI52402B (xx) 1977-05-02
CA998242A (en) 1976-10-12
FI52402C (fi) 1977-08-10
BR7306402D0 (pt) 1974-06-27
ZA735654B (en) 1974-07-31
BE803787A (fr) 1973-12-17
SE382827B (sv) 1976-02-16
JPS4959039A (xx) 1974-06-07
IT990370B (it) 1975-06-20
AT324386B (de) 1975-08-25

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