EP0944448B1 - Induktor bei einem schmelzengefäss - Google Patents

Induktor bei einem schmelzengefäss Download PDF

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Publication number
EP0944448B1
EP0944448B1 EP97949973A EP97949973A EP0944448B1 EP 0944448 B1 EP0944448 B1 EP 0944448B1 EP 97949973 A EP97949973 A EP 97949973A EP 97949973 A EP97949973 A EP 97949973A EP 0944448 B1 EP0944448 B1 EP 0944448B1
Authority
EP
European Patent Office
Prior art keywords
use according
cooling fluid
cooling
melt
field
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
EP97949973A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0944448A1 (de
Inventor
Raimund Brückner
Daniel Grimm
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0944448A1 publication Critical patent/EP0944448A1/de
Application granted granted Critical
Publication of EP0944448B1 publication Critical patent/EP0944448B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • 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
    • B22D41/50—Pouring-nozzles
    • B22D41/60—Pouring-nozzles with heating or cooling means
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/42—Cooling of coils

Definitions

  • the invention relates to the use of an inductor Generation of an alternating electromagnetic field after Preamble of claim 1.
  • the induction coil consists of several side by side lying electrically switchable independently Areas whose turns a fill pipe helical surrounded and which when the current flow solidified in it Liquefy melt by induction.
  • the areas have cavities, which with a coolant, such as Cooling liquid or gas, e.g. Fed water or air become.
  • From US-A-4 972 899 is an apparatus for casting Molten metal from a tundish into a mold over one Connection tube known.
  • In the wall there are at least embedded two helical cooling tubes, which intermittently or cyclically independently with one another Cooling fluid can be acted upon.
  • Each cooling tube is with one separate AC power connection to also as Serve heater.
  • the device becomes like this operated that after a predetermined cooling time respective cooling fluid switched off and alternating current to the respective cooling tube is applied to reheat the Molten metal in the associated connecting pipe section initiate.
  • an inductor is connected to a control and Closure device of a metallurgical vessel known the one stator arranged in a vessel wall and one in this to throttle or shut off the melt flow rotatable rotor (tube-in-tube closure system).
  • the Cooling takes place using a single cooling fluid.
  • cooling fluid is usually compressed air used to prevent leakage, for example through Wear of the vessel wall, not a dangerous one Development of water vapor or detonating gas can occur.
  • GB-A-2 279 543 describes a two-part inductor separate electrical connections to the outlet member Melting vessel.
  • the object of the invention is to use an inductor to propose the type mentioned at the beginning, with which a Adaptation to different cooling requirements possible is.
  • the inductor has different areas with separate It has inlets and outlets for cooling fluid possible to use these areas simultaneously with different To apply cooling fluids. It is also possible that different areas, each one at a time with different ones To apply cooling fluids. This allows the cooling in the individual areas the respective requirements there be adjusted.
  • the danger zone lies where the inductor is located in the melt vessel Melt is closest because there is wear of the wall and / or cracking in the wall of the melt vessel Melt may reach the inductor. In one other area can be cooled with water or steam become.
  • the different cooling fluids are preferably liquid gas, or dry ice, or water, or water vapor, or gas, or Compressed air.
  • gases as the cooling fluid can also adapt to a cooling capacity required is variable adjustable ratio of several gases, for example Compressed air and supercooled air or nitrogen or carbon dioxide or oxygen or the like can be used.
  • the electromagnetic generated by it Use alternating field for various functions.
  • the areas of the inductor are preferably different electrical frequencies and / or electrical Services can be charged depending on the purpose of the respective area.
  • the figure shows an inductor in a tube-in-tube screw cap trained outlet organ at the bottom of a Melting vessel.
  • a pipe-in-pipe closure system R built-in. It has a perforated brick 2, in which means a holding device 3 a stator 4 made of refractory, ceramic material is attached.
  • a Rotor 6 made of refractory, ceramic material rotatable stored.
  • a melt outlet channel 8 designed, which by turning the rotor more or less or not to cover with a melt inlet opening 5 of the stator 4 are brought, whereby the melt discharge controllable e.g. is interruptible.
  • the stator 4 is from a coil-shaped inductor 9 enclosed, which is installed in the perforated brick 2 and bears on the stator 4 via insulation 10.
  • the inductor 9 consists of a hollow chamber-shaped metal profile and is connected to an electrical frequency converter 11, whose frequency and / or power is adjustable.
  • the inductor 9 is responsible for guiding cooling fluid serving hollow chamber profile in an upper region 12 and in divided a lower area 13.
  • the upper area 12 is closer to the melt S. Er in the vessel is close to a danger zone G, in which wear and tear during operation or crack formation is to be feared.
  • the lower area 13 is further away from this danger zone.
  • the upper Area 12 has a feed 14 and a discharge 15 for a cooling fluid.
  • the lower area 13 has a feed 16 and a discharge 17 for another cooling fluid.
  • the a feed 14 is from a first coolant source 18 fed.
  • the coolant for the upper region 12 is a gas especially compressed air.
  • the cooling fluid for the lower area 13 is liquid gas, or dry ice, or water, or water vapor. Depending on the application, however, the cooling fluids are also interchangeable. From the first coolant source 18 or the The regions 12, 13 can be provided by the second coolant source 19 independently of each other with regard to the type of cooling fluid and cooling capacity.
  • the inductor 9 can as well as it with regard to cooling is divided into areas 12, 13, also electrically in different areas. These are different Frequencies and / or services can be created. Accordingly is in the figure at the lower region 13 Frequency converter or converter 11 by means of electrical Connections 21, 22 and another to the upper region 12 Frequency converter or converter 20 by means of electrical Connections 23, 24 connected. The frequencies and / or The power of the converter or converter 11, 20 can be adjusted.
  • the upper region 12 in particular becomes inductive Heating of the melt flowing through the outlet channel 8 used.
  • the melt if necessary, by heat conduction or heat radiation is heated.
  • the cooling is done to protect the inductor before overheating and possibly to dissipate heat its surroundings.
  • the lower region 13 can also be used for inductive heating use the melt flowing through the outlet channel 8. Its cooling can be done by appropriate choice of the cooling fluid and / or its throughput speed may be stronger than in upper area 12. Due to intensive cooling there is also one Heat dissipation from the environment, the perforated brick possible.
  • the lower region 13 can also be used as a reference coil or Reference field for a temperature measurement of the outlet channel 8 flowing melt or for the detection of slag serve in the flow channel 8. Another (not shown) (receiver) coil required.
  • the lower Area 13 is in this case to a (not shown) Measuring device connected. Because the electrical properties, especially the conductivity, the melt are temperature dependent, they influence the reference field of the lower area 13 different depending on the temperature what is recorded and evaluated by the measuring device. The same also applies to slag detection because slag is a has different electrical conductivity than the melt. Also the cooling of the area 13 can be independent of the Cooling in the range 12 can be selected.
  • the lower region 13 can also be used to generate a Use directed electromagnetic field that in the a melt component that has penetrated into the gap 7, for example generated, which counteracts the melt flow. This seals the gap 7. A In this case, intensive cooling is cheap because it is high electrical power required to generate the force component are.
  • the inductor described can also be used with others Spouts in the wall or bottom of a metallurgical Vessel for pouring liquid metals, in particular Steel, use. But it can also in devices for Slag tapping in waste incineration plants, for example be used.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Discharge Heating (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • General Induction Heating (AREA)
EP97949973A 1996-12-11 1997-11-28 Induktor bei einem schmelzengefäss Expired - Lifetime EP0944448B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19651535A DE19651535C1 (de) 1996-12-11 1996-12-11 Induktor bei einem Schmelzengefäß
DE19651535 1996-12-11
PCT/DE1997/002784 WO1998025718A1 (de) 1996-12-11 1997-11-28 Induktor bei einem schmelzengefäss

Publications (2)

Publication Number Publication Date
EP0944448A1 EP0944448A1 (de) 1999-09-29
EP0944448B1 true EP0944448B1 (de) 2002-02-20

Family

ID=7814390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97949973A Expired - Lifetime EP0944448B1 (de) 1996-12-11 1997-11-28 Induktor bei einem schmelzengefäss

Country Status (8)

Country Link
US (1) US6052403A (ja)
EP (1) EP0944448B1 (ja)
JP (1) JP2001505487A (ja)
KR (1) KR20000057522A (ja)
AT (1) ATE213440T1 (ja)
AU (1) AU5309398A (ja)
DE (3) DE19651535C1 (ja)
WO (1) WO1998025718A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819903C2 (de) * 1998-05-05 2000-09-14 Didier Werke Ag Fluidgekühlte, elektrische Stromleitung
DE10201355A1 (de) * 2002-01-16 2003-07-31 C G Aneziris Unterstützte chemische und thermomechanische Eigenschaften von feuerfesten Schlüsselbauteilen und Auskleidungen unter Stromzuführung und/oder mit elektrischen und/oder elektrochemischen und/oder elektromagnetischen Wirkungsmechanismen
JP4660343B2 (ja) * 2004-11-24 2011-03-30 新日本製鐵株式会社 溶融金属の注入用ノズルの加熱装置
EP3326735B1 (de) * 2016-11-29 2020-07-22 Refractory Intellectual Property GmbH & Co. KG Verfahren sowie eine einrichtung zum detektieren von grössen im ausguss eines metallurgischen gefässes

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1681950A (en) * 1923-07-13 1928-08-28 Ajax Electrothermic Corp Multiple-path water-cooled furnace
US2277223A (en) * 1941-04-26 1942-03-24 Induction Heating Corp Electric induction furnace
US3014255A (en) * 1957-11-15 1961-12-26 Heraeus Gmbh W C Method of operating vacuum induction furnace
DE2433582A1 (de) * 1973-08-10 1975-02-27 Grohe Armaturen Friedrich Vorrichtung zur herstellung von gussteilen
FR2518239B1 (fr) * 1981-12-15 1986-06-27 Air Liquide Procede et dispositif de frittage de parois refractaires
DE3439369A1 (de) * 1984-10-27 1986-04-30 AMP Angewandte Meßtechnik und Prozeßsteuerung GmbH, 5100 Aachen Verfahren und vorrichtung zum detektieren von schlacke
DE3722795A1 (de) * 1987-07-10 1989-01-19 Amepa Vorrichtung zum detektieren von in einem fluss einer metallschmelze mitfliessender schlacke
US4972899A (en) * 1990-01-02 1990-11-27 Olin Corporation Method and apparatus for casting grain refined ingots
DE4125916A1 (de) * 1991-08-05 1993-02-11 Didier Werke Ag Verfahren zum induktiven aufheizen von keramischen formteilen
DE4320766C2 (de) * 1993-06-23 2002-06-27 Ald Vacuum Techn Ag Vorrichtung zum Einschmelzen einer festen Schicht aus elektrisch leitfähigem Material
DE4428297A1 (de) * 1994-08-10 1996-02-15 Didier Werke Ag Feuerfeste Düse und Verfahren zum Vergießen einer Metallschmelze aus einem Gefäß
DE19500012A1 (de) * 1995-01-02 1996-07-04 Didier Werke Ag Regel- und Verschlußeinrichtung für ein metallurgisches Gefäß
DE19603317A1 (de) * 1995-08-28 1997-03-06 Didier Werke Ag Verfahren zum Betreiben eines Induktors und Induktor zur Durchführung des Verfahrens
JP2954896B2 (ja) * 1997-01-09 1999-09-27 核燃料サイクル開発機構 コールドクルーシブル誘導溶融炉からの溶融物抜き出し装置

Also Published As

Publication number Publication date
EP0944448A1 (de) 1999-09-29
US6052403A (en) 2000-04-18
AU5309398A (en) 1998-07-03
WO1998025718A1 (de) 1998-06-18
DE19781390D2 (de) 1999-11-11
DE19651535C1 (de) 1998-04-30
ATE213440T1 (de) 2002-03-15
KR20000057522A (ko) 2000-09-25
DE59706455D1 (de) 2002-03-28
JP2001505487A (ja) 2001-04-24

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