EP0800879A2 - Lingotière refroidie pour la fabrication de lingots, procédé de coulée continue ainsi que procédé pour la refonte sous laitier électroconducteur - Google Patents

Lingotière refroidie pour la fabrication de lingots, procédé de coulée continue ainsi que procédé pour la refonte sous laitier électroconducteur Download PDF

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Publication number
EP0800879A2
EP0800879A2 EP96119516A EP96119516A EP0800879A2 EP 0800879 A2 EP0800879 A2 EP 0800879A2 EP 96119516 A EP96119516 A EP 96119516A EP 96119516 A EP96119516 A EP 96119516A EP 0800879 A2 EP0800879 A2 EP 0800879A2
Authority
EP
European Patent Office
Prior art keywords
mold
cooled
current
water
slag
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.)
Granted
Application number
EP96119516A
Other languages
German (de)
English (en)
Other versions
EP0800879A3 (fr
EP0800879B1 (fr
Inventor
Harald Dipl.-Ing. Holzgruber
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.)
Inteco Internationale Techinsche Beratung GmbH
Original Assignee
Inteco Internationale Techinsche Beratung GmbH
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Filing date
Publication date
Application filed by Inteco Internationale Techinsche Beratung GmbH filed Critical Inteco Internationale Techinsche Beratung GmbH
Publication of EP0800879A2 publication Critical patent/EP0800879A2/fr
Publication of EP0800879A3 publication Critical patent/EP0800879A3/fr
Application granted granted Critical
Publication of EP0800879B1 publication Critical patent/EP0800879B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds

Definitions

  • the invention relates to a short, water-cooled, mold open at the bottom for the production of blocks or strands, in which a casting mold is covered by an electrically conductive slag, in which the block or strand is formed in the lower part and from it either by lifting the mold or by lowering it the block or strand is withdrawn.
  • the invention also relates to an arrangement for the continuous casting of metals, a method for remelting electroslag and use of the mold.
  • molds of interest here enable the production of strands or blocks that are considerably longer than the water-cooled molds, with the strand formed in the mold being pulled off either vertically or in an arc shape in conventional continuous casting.
  • the block formed in the mold can either be pulled down by lowering a base plate, or the mold can be raised in such a way that a remelt block is built up on a fixed base plate.
  • the continuous casting was initially carried out in air, an attempt being made to limit the oxidation of the metal by adding oil in the area of the casting level.
  • the introduction of mold powder to cover the mold level and the use of dip tubes for the supply of the liquid metal into the mold has led to further improvements here.
  • At least one not directly water-cooled current-conducting element is installed in the mold wall formed from water-cooled copper elements in such a way that it comes into contact with the slag bath, it also being completely below the surface of the slag bath can be arranged, but does not reach the level of the liquid metal; This element can be used to make contact with a power source.
  • Graphite is preferably used as the material for these current-conducting elements, but also high-melting metals, such as tungsten, molybdenum or the like. are suitable.
  • the upper part of the mold which receives the slag bath and into which the current-carrying element (s) is / are built, can be widened in a funnel shape. This may be of particular interest in the production of strands of small cross-section with a diameter or a side length of less than 300 mm.
  • a further embodiment of the mold according to the invention provides that the built-in current-conducting element (s) is / are electrically insulated from the copper part of the mold by installing non-conductive elements.
  • Refractory ceramic materials such as fireclay, Al 2 O 3 , MgO etc. come into consideration as the material for the non-conductive elements.
  • these can also be insulated from one another by additionally installing non-conductive elements between the individual current-conducting elements.
  • the mold according to the invention enables a number of different arrangements and process variants for electro-slag remelting or for continuous casting, the most important of which are described below.
  • Fig. 1 shows the schematic structure of a tubular mold 10 for the so-called electroslag remelting (ESR).
  • ESR electroslag remelting
  • a remelting block 16 is formed and withdrawn from the mold 10 in such a way that the meniscus of a liquid sump 18 is located in that lower water-cooled mold part 12.
  • a liquid slag bath 20 can be seen in which an edible electrode 22 is immersed.
  • a current-conducting element 24 which is either entirely ring-shaped or consists of several parts or sections and is not directly water-cooled, which - as shown here - Can be electrically insulated from likewise non-water-cooled and non-current-conducting outer elements 26 with respect to the lower mold part 12 and any upper water-cooled mold part 14 which may be present.
  • the inflows of the mold parts 12, 14 for the cooling water are designated 28, the outflows 30.
  • the upper water-cooled mold part 14 and / or the non-water-cooled, non-current-conducting elements 26 are / are unnecessary for a number of possible applications.
  • the mold 10 described above is also suitable for continuous casting, as illustrated in FIG. 2.
  • the meniscus of the liquid sump 18 of the strand 32 withdrawn from the mold 10 is covered by the liquid slag bath 20, which is held in the region of the not directly cooled current-conducting element 24 and the - likewise not directly cooled - non-current-conducting elements 26 .
  • the liquid metal 36 located in an upwardly widening intermediate vessel 34 reaches the liquid sump 18 in the flow direction x via a snorkel 38 as a pouring jet 40.
  • FIG. 3 offers the schematic structure of an ESCU with a sliding mold using the mold 10 shown in FIG. 1.
  • the installation of a current-conducting element 24 in the area of the slag bath 20 enables a number of variants for the connection of the system to a current source 42 for alternating or direct current, which by appropriate Switching switches 44, 46, 48, 50 can be achieved.
  • a current flow occurs when the switch 44 - in line 45 between current source 42 and electrode 22 - and switch 48 - in line 49 between current source 42 and a base plate 52 - are closed are with switch 46 open; the latter is assigned to the current-carrying element 24.
  • switch 44 If the switch 44 is now opened, the entire current is fed back to the current source 38 via the current-conducting element 24 built into the mold 10 and the switches 42 and 46 via switching point 48. Switching point 48 is connected to line 45.
  • switch 46 is put on switch point 49, which is connected to line 41, when switches 40, 42 and 44 are closed.
  • the current supply to the slag bath 20 takes place both via the electrode 22 and via the current-conducting element 24 built into the mold 10 in accordance with the respective resistances, while the return of the entire melt flow to the current source 42 via the block 16 and the Base plate 52 happens.
  • This operating mode requires the installation of the non-water-cooled, non-current-conducting elements 26.
  • the electrode 22 immersed in the slag bath 20 becomes current-free and the entire power supply takes place via the current-conducting element 24 integrated in the mold 10.
  • FIG. 4 shows an embodiment of the mold 10 according to the invention, in which two current-conducting elements 24 a and 24 b are insulated from the lower water-cooled mold part 12 and the upper water-cooled mold part 14 by non-current-conducting elements 26 and horizontally from one another by likewise non-current-conducting intermediate elements 58 are.
  • two current-conducting elements 24 a and 24 b are insulated from the lower water-cooled mold part 12 and the upper water-cooled mold part 14 by non-current-conducting elements 26 and horizontally from one another by likewise non-current-conducting intermediate elements 58 are.
  • the current flows through the slag bath 20 between the two current-conducting parts 24 a , 24 b .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Continuous Casting (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP96119516A 1996-04-11 1996-12-05 Lingotière refroidie pour la fabrication de lingots, procédé de coulée continue ainsi que procédé pour la refonte sous laitier électroconducteur Expired - Lifetime EP0800879B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19614182A DE19614182C1 (de) 1996-04-11 1996-04-11 Wassergekühlte Kokille zum Herstellen von Blöcken oder Strängen sowie deren Verwendung
DE19614182 1996-04-11

Publications (3)

Publication Number Publication Date
EP0800879A2 true EP0800879A2 (fr) 1997-10-15
EP0800879A3 EP0800879A3 (fr) 1998-09-30
EP0800879B1 EP0800879B1 (fr) 2002-03-13

Family

ID=7790907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119516A Expired - Lifetime EP0800879B1 (fr) 1996-04-11 1996-12-05 Lingotière refroidie pour la fabrication de lingots, procédé de coulée continue ainsi que procédé pour la refonte sous laitier électroconducteur

Country Status (3)

Country Link
EP (1) EP0800879B1 (fr)
JP (1) JP3539706B2 (fr)
DE (2) DE19614182C1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061060A1 (fr) * 2000-02-16 2001-08-23 Inteco Internationale Technische Beratung Ges.M.B.H. Procede et systeme pour la production de corps coules creux en metal
US6913066B2 (en) * 2000-11-14 2005-07-05 Inteco Internationale Technische Beratung Ges. Mbh Method and device for producing ingots or strands of metal by melting electrodes in an electroconductive slag bath
WO2005095657A2 (fr) * 2004-02-10 2005-10-13 Ati Properties, Inc. Procede et appareil permettant de reduire la segregation dans des lingots metalliques
WO2007014916A1 (fr) * 2005-08-02 2007-02-08 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Procede pour realiser des corps moules contenant du metal, et dispositif a cet effet
CN103282144A (zh) * 2010-11-17 2013-09-04 费罗法克塔有限公司 压铸喷嘴和压铸方法
CN105483391A (zh) * 2015-12-11 2016-04-13 东北大学 确定单电源双回路电渣重熔过程中工艺参数的装置及方法
CN114606391A (zh) * 2022-03-11 2022-06-10 东北大学 一种电渣重熔法制备复合钢锭板坯的装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409233B (de) * 2000-02-07 2002-06-25 Inteco Int Techn Beratung Verfahren und anordnung zum herstellen von gusskörpern aus metallen
DE60017077T2 (de) * 2000-03-21 2005-12-29 General Electric Co. Elektro-Schlacke-Umschmelzsysteme mit Bodenausguss und kontrolliertem Elektrostrompfad
AT410412B (de) * 2000-11-10 2003-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke umschmelzen von metallen
EP1925681B1 (fr) 2006-11-15 2011-04-27 Inteco special melting technologies GmbH Procédé de refonte de métaux sous laitier électroconducteur et lingotière à cet effet
AT504574B1 (de) * 2006-11-15 2009-08-15 Inteco Special Melting Technol Verfahren zum elektroschlacke umschmelzen von metallen
AT509736B1 (de) * 2010-05-14 2012-03-15 Inteco Special Melting Technologies Gmbh Verfahren und vorrichtung zur kontinuierlichen erfassung des schlackenniveaus in esu-anlagen mit kurzen gleitkokillen
CN102974807A (zh) * 2012-08-01 2013-03-20 南昌大学 一种提高液态金属充型能力的方法及装置
CN112410573B (zh) * 2020-10-30 2022-03-22 东北大学 用于冶炼含Ce的Fe-Ni软磁合金的渣系及其使用方法

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DE1483646A1 (de) * 1965-06-11 1969-09-25 Suedwestfalen Ag Stahlwerke Verfahren und Vorrichtung zum Herstellen von Gussbloecken,vorzugsweise Stahlbloecken
DE1962135C3 (de) * 1969-12-11 1980-01-17 Leybold-Heraeus Gmbh, 5000 Koeln Verfahren zur Reinigung von Metallen in einem Elektroschlacke-umschmelzofen
US3768543A (en) * 1971-06-15 1973-10-30 V Kolisnyk Electro-slag furnace for producing continuous ingot
GB1413508A (en) * 1972-08-25 1975-11-12 British Steel Corp Secondary refining process
DE2620823C3 (de) * 1976-05-11 1982-03-11 Venjukovskij armaturnyj zavod, Čechov, Moskovskaja oblast' Verfahren und Anlage zum Elektroschlacke-Umschmelzen von Metallen und Verfahren zum Elektroschlacke-Umschmelzen mit dieser Anlage
AT406384B (de) * 1996-01-29 2000-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke-strangschmelzen von metallen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061060A1 (fr) * 2000-02-16 2001-08-23 Inteco Internationale Technische Beratung Ges.M.B.H. Procede et systeme pour la production de corps coules creux en metal
US6913066B2 (en) * 2000-11-14 2005-07-05 Inteco Internationale Technische Beratung Ges. Mbh Method and device for producing ingots or strands of metal by melting electrodes in an electroconductive slag bath
WO2005095657A2 (fr) * 2004-02-10 2005-10-13 Ati Properties, Inc. Procede et appareil permettant de reduire la segregation dans des lingots metalliques
WO2005095657A3 (fr) * 2004-02-10 2005-11-17 Ati Properties Inc Procede et appareil permettant de reduire la segregation dans des lingots metalliques
WO2007014916A1 (fr) * 2005-08-02 2007-02-08 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Procede pour realiser des corps moules contenant du metal, et dispositif a cet effet
US8002014B2 (en) 2005-08-02 2011-08-23 Leibniz-Institut Fuer Festkoerper-Und Werkstofforschung Dresden E.V. Process for producing metal-containing castings, and associated apparatus
CN103282144A (zh) * 2010-11-17 2013-09-04 费罗法克塔有限公司 压铸喷嘴和压铸方法
CN103282144B (zh) * 2010-11-17 2016-04-27 费罗法克塔有限公司 用于无浇口压铸的压铸方法
CN105483391A (zh) * 2015-12-11 2016-04-13 东北大学 确定单电源双回路电渣重熔过程中工艺参数的装置及方法
CN105483391B (zh) * 2015-12-11 2017-08-11 东北大学 确定单电源双回路电渣重熔过程中工艺参数的装置及方法
CN114606391A (zh) * 2022-03-11 2022-06-10 东北大学 一种电渣重熔法制备复合钢锭板坯的装置

Also Published As

Publication number Publication date
DE59608875D1 (de) 2002-04-18
EP0800879A3 (fr) 1998-09-30
EP0800879B1 (fr) 2002-03-13
JP3539706B2 (ja) 2004-07-07
DE19614182C1 (de) 1997-07-31
JPH1029042A (ja) 1998-02-03

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