WO2015132237A1 - Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie - Google Patents

Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie Download PDF

Info

Publication number
WO2015132237A1
WO2015132237A1 PCT/EP2015/054369 EP2015054369W WO2015132237A1 WO 2015132237 A1 WO2015132237 A1 WO 2015132237A1 EP 2015054369 W EP2015054369 W EP 2015054369W WO 2015132237 A1 WO2015132237 A1 WO 2015132237A1
Authority
WO
WIPO (PCT)
Prior art keywords
coolant
mold
temperature
cooling
water
Prior art date
Application number
PCT/EP2015/054369
Other languages
German (de)
English (en)
Inventor
Harald Holzgruber
Alexander SCHERIAU
Michael Kubin
Andreas Filzwieser
Original Assignee
Inteco Special Melting Technologies Gmbh
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 Inteco Special Melting Technologies Gmbh filed Critical Inteco Special Melting Technologies Gmbh
Priority to EP15710448.0A priority Critical patent/EP3113895B1/fr
Priority to ES15710448T priority patent/ES2747801T3/es
Publication of WO2015132237A1 publication Critical patent/WO2015132237A1/fr

Links

Classifications

    • 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
    • B22D11/055—Cooling the moulds
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • B22D23/10—Electroslag casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D45/00—Equipment for casting, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/064—Cooling the ingot moulds
    • 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
    • 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
    • C22B9/20—Arc remelting

Definitions

  • the present invention relates to an improved method for cooling liquid-cooled molds used in continuous casting and remelting plants and for the production of strands or blocks of steels and metals, e.g. Aluminum, copper, nickel and cobalt and their alloys are used. Furthermore, the invention relates to a system for carrying out the method according to the invention.
  • the molds used for this purpose usually consist of an alloyed or unalloyed copper insert, which is installed in a so-called "water jacket", usually consisting of a welded steel construction, the heat removal being effected by the cooling water passing through the gap between mold insert and water jacket
  • the cooling water must be so large that a vapor bubble formation on the water side of the Kokillendones is avoided.
  • plate molds made of copper which either have holes through which the cooling liquid is passed or on the cooling water side have milled grooves that serve as cooling channels and by a screwed steel plate to be sealed.
  • Such molds are in use in continuous casting, as well as in plants for remelting self-consuming electrodes either in a hot Slag bath - the electroslag remelting process - or by an arc under vacuum - the vacuum arc remelting process.
  • the liquid metal to be cast is poured from a tundish into one or more water-cooled oscillating copper molds.
  • the molds used are open at the bottom and can also have a certain conicity.
  • a first viable strand shell is formed which is continuously withdrawn from the mold.
  • casting powder slags are used.
  • an already solidified metal block (self-consumable electrode) is melted in an electrically conductive slag or under vacuum by an electric arc.
  • the liquid steel collects in a liquid metal sump, which is located in a water-cooled mold, and solidifies in this to a remelt block.
  • remelting can be used on the one hand downwardly open molds (Gleitkokillen) and on the other hand down closed molds (Standkokillen).
  • the molds may have a certain conicity.
  • the Umschmelzblock is pulled down from the mold by means of a movable bottom plate.
  • the molds for continuous casting and remelting are cooled by circulating water of a conventional water cycle, which usually consists of a cooling water storage tank, a pump set and a heat exchanger and valves, valves, measuring and control devices for the purpose of controlling and controlling the water flow.
  • Water usually has a comparatively low operating temperature.
  • a maximum flow temperature of 50-60 ° C at a temperature difference between the cooling water supply and return temperature ( ⁇ ) of about 10 ° C can be mentioned here.
  • This low temperature of the water leads to a strong cooling effect due to the self-adjusting high temperature gradient between steel and mold inner wall. This strong cooling effect can lead to a solidification of the meniscus of the liquid steel at the boundary line liquid metal and atmosphere or slag.
  • One way in which the method according to the invention is aimed is, for example, to carry out the cooling water circuit of the mold as a pressure circuit.
  • the water temperature can be increased up to 180 ° C, which corresponds to a water pressure of about 1 1 - 14 bar.
  • This approach requires a technical control of the pressure circuit, whereby safety aspects must also be considered.
  • Another solution which is simpler compared to a pressurized water circuit, is to cool the mold with liquid metal or salt melts, which can be operated in a pressure range comparable to the conventional water cycle.
  • the only modification here relates to the sealing rings of the existing molds, which must be suitable for use at higher temperatures. Salt melts suitable for this purpose are also referred to in the literature as ionic liquids.
  • Ionic liquids are characterized in that they are liquid in a temperature range between room temperature and 600 ° C, preferably between room temperature and 300 ° C, without requiring an increase in pressure is necessary.
  • all ionic liquids known per se can be used. Types and production methods of ionic liquids can be found in WO 2005/021484, WO 2008/052860, WO 2008/052863 and WO 2013/1 13461.
  • the cooling of the mold is carried out indirectly as in the prior art water cooling, that is, the cooling medium does not come into direct contact with the liquid to be cast metal.
  • the dissipated heat is removed or recovered via a heat exchanger, so that a constant inlet temperature of the coolant can be ensured. Due to the very high difference between the inlet and outlet temperature of the cooling medium, a very large amount of waste heat is released, which would escape completely or partially into the atmosphere. By using a heat exchanger, this recovered heat can be fed into a heating circuit. Furthermore, by a heat exchanger subsequent suitable unit also this waste heat for steam and subsequently be used to generate electricity.
  • Another advantage of using liquid metal or molten salts is that, in the case of damage to the mold, there is no reaction of the refrigerant with the liquid metal to be poured or remelted.
  • the essential effect of the process according to the invention is that a positive effect on the quality of the strand or remelt block is achieved by the use of water under elevated pressure or of liquid metal melts or ionic liquids. Due to the higher temperature of these cooling media, the initial solidification of the metal is delayed so that it begins only below the meniscus area.
  • a method for cooling liquid-cooled usually consisting of copper molds for continuous casting or remelting self-consuming electrodes of steels or metals, in which the cooling effect of the coolant used is greatly reduced compared to water, so that the primary solidification of the liquid metal is delayed and takes place only below the meniscus in contact with the mold wall.
  • the flow rate of the coolant is set at inlet temperatures of room temperature, but also considerably higher, so that an outlet temperature of the coolant of over 80 ° C is reached.
  • the temperature difference between the coolant inlet and outlet may be between 5 ° C and a maximum of 150 ° C to achieve the purpose of the invention.
  • an inlet temperature of the coolant between 60 ° C and 100 ° C is preferably selected and set the outlet temperature at temperature differences between 40 ° C and 100 ° C at 100 ° C to 200 ° C.
  • basically pressurized water can be used. That's it necessary to adjust the pressure in the circuit so that formation of vapor bubbles in contact with the mold wall is prevented.
  • molten metal which are liquid below 100 ° C.
  • a particularly favorable solution is the use of ionic liquids with and without water content, which are liquid above room temperature and up to at least 200 ° C.
  • a defined control of the temperature difference between inlet and outlet of the coolant in the range of at least 5 ° C and a maximum of 150 ° C is required. It is essential here to maintain the respectively selected or desired temperature difference at a defined coolant inlet temperature which can be maintained by re-cooling the coolant in a heat exchanger.
  • a suitable for carrying out the method according to the invention cooling circuit has a storage tank as a reservoir for the coolant and a circulation pump, by means of which the coolant is conveyed by the continuous casting or Umschmelzkokille and a heat exchanger, and corresponding valves and measuring devices for monitoring and control.
  • the cooling circuit can be designed both open, so that the storage tank is at atmospheric pressure or closed with a pressurized storage tank.
  • a closed cooling circuit for carrying out the method according to the invention is shown schematically with a mold 1, which can be designed as a sliding or standing mold for the continuous casting or remelting process.
  • the coolant enters the mold 1 via the inlet 2 at a temperature T 1 which is in the range between room temperature and 300 ° C.
  • T 1 which is in the range between room temperature and 300 ° C.
  • T2 T1 + ⁇
  • the heat released via a heat exchanger 4 amount of heat can be used subsequently for a recovery of thermal energy.
  • a collecting container 5 and a pump 6 the coolant is passed back into the mold 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)

Abstract

L'invention vise à éviter, lors de la coulée continue ou lors de la refonte d'aciers et d'alliages, une solidification progressive sur le ménisque du niveau du métal. A cet effet, les conditions de refroidissement sont réglées de telle manière que l'agent de refroidissement atteint des températures de sortie d'au moins 80 °C en présence de températures d'entrée de l'agent de refroidissement à température ambiante tout comme à des températures nettement supérieures. Sont considérés en tant qu'agents de refroidissement de l'eau sous pression, des métaux liquides à des températures inférieures à 100 °C ainsi que des fluides ioniques (sels fondus) liquides à une température supérieure à la température ambiante et à une température pouvant aller jusqu'à au moins 200 °C. Les différences de température dans la coquille entre l'entrée de l'agent de refroidissement et la sortie de ce dernier peuvent avoir une valeur comprise entre 5 °C et 150 °C.
PCT/EP2015/054369 2014-03-06 2015-03-03 Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie WO2015132237A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15710448.0A EP3113895B1 (fr) 2014-03-06 2015-03-03 Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie
ES15710448T ES2747801T3 (es) 2014-03-06 2015-03-03 Método e instalación para la refrigeración de coquillas refrigeradas por líquido para procesos metalúrgicos

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA161/2014A AT515566A1 (de) 2014-03-06 2014-03-06 Verfahren zur Kühlung von flüssigkeitsgekühlten Kokillen für metallurgische Prozesse
ATA161/2014 2014-03-06

Publications (1)

Publication Number Publication Date
WO2015132237A1 true WO2015132237A1 (fr) 2015-09-11

Family

ID=52686333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/054369 WO2015132237A1 (fr) 2014-03-06 2015-03-03 Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie

Country Status (4)

Country Link
EP (1) EP3113895B1 (fr)
AT (1) AT515566A1 (fr)
ES (1) ES2747801T3 (fr)
WO (1) WO2015132237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114799105A (zh) * 2022-05-06 2022-07-29 山东钢铁股份有限公司 一种结晶器钢水辅助冷却装置及使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108031806A (zh) * 2017-10-17 2018-05-15 襄阳远锐资源工程技术有限公司 一种铅锭浇铸装置及浇铸方法

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157919A (en) * 1960-05-13 1964-11-24 Firth Sterling Inc Apparatus for producing improved ingot metal
US3783937A (en) * 1970-12-16 1974-01-08 Voest Ag Apparatus for cooling a continuous casting mould
JPS57187151A (en) * 1981-05-13 1982-11-17 Nippon Steel Corp Cooler for continuously cast ingot
JPH06277804A (ja) * 1993-03-26 1994-10-04 Sumitomo Metal Ind Ltd 連続鋳造用鋳型の冷却方法
DE19728098A1 (de) * 1997-07-02 1999-01-07 Inteco Int Techn Beratung Trichterkokille mit trichterförmigem Einsatzrohr für das Elektroschlackeumschmelzen sowie Verfahren dazu
JP2000210758A (ja) * 1999-01-26 2000-08-02 Kawasaki Steel Corp 連続鋳造方法および連続鋳造用鋳型
WO2004076096A1 (fr) 2003-02-28 2004-09-10 So & So Sommerhofer Oeg Procede de coulee en continu
WO2005021484A2 (fr) 2003-08-27 2005-03-10 Proionic Production Of Ionic Substances Gmbh & Co Keg Procede pour produire des liquides ioniques, des solides ioniques ou leurs melanges
DE102006002355A1 (de) * 2006-01-11 2007-07-12 Hartmut Ricken Vorrichtung und Verfahren zur thermischen Koppelung zwischen Kokille und Kühler während des Stranggießens
WO2008052860A1 (fr) 2006-10-10 2008-05-08 Proionic Production Of Ionic Substances Gmbh & Co Keg Procédé de production de carbonates quaternaires
WO2008052863A2 (fr) 2006-10-10 2008-05-08 Proionic Production Of Ionic Substances Gmbh & Co Keg Procédé de mise en réaction de 2-carboxylates 1,3 hétéroaromatiques avec de l'eau
WO2013013788A1 (fr) * 2011-07-22 2013-01-31 Heinrich Marti Procédé d'exploitation d'énergies thermiques, de préférence dans une installation de coulée continue
WO2013113461A1 (fr) 2012-02-02 2013-08-08 Vtu Holding Gmbh Liquides ioniques pour le refroidissement dans un environnement à haute température

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410413B (de) * 2000-11-14 2003-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke umschmelzen von metallen
TWI268821B (en) * 2002-04-27 2006-12-21 Sms Demag Ag Adjustment of heat transfer in continuous casting molds in particular in the region of the meniscus
DE10308982B3 (de) * 2003-03-01 2004-03-04 Ald Vacuum Technologies Ag Verfahren und Vorrichtung zum Ausgleich der im Schmelzraum und im Kühlwassersystem herrschenden Drücke bei einer Sonderschmelzanlage
AT509894A1 (de) * 2010-06-01 2011-12-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur erzeugung von überhitztem sattdampf in einer stranggiessmaschine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157919A (en) * 1960-05-13 1964-11-24 Firth Sterling Inc Apparatus for producing improved ingot metal
US3783937A (en) * 1970-12-16 1974-01-08 Voest Ag Apparatus for cooling a continuous casting mould
JPS57187151A (en) * 1981-05-13 1982-11-17 Nippon Steel Corp Cooler for continuously cast ingot
JPH06277804A (ja) * 1993-03-26 1994-10-04 Sumitomo Metal Ind Ltd 連続鋳造用鋳型の冷却方法
DE19728098A1 (de) * 1997-07-02 1999-01-07 Inteco Int Techn Beratung Trichterkokille mit trichterförmigem Einsatzrohr für das Elektroschlackeumschmelzen sowie Verfahren dazu
JP2000210758A (ja) * 1999-01-26 2000-08-02 Kawasaki Steel Corp 連続鋳造方法および連続鋳造用鋳型
WO2004076096A1 (fr) 2003-02-28 2004-09-10 So & So Sommerhofer Oeg Procede de coulee en continu
WO2005021484A2 (fr) 2003-08-27 2005-03-10 Proionic Production Of Ionic Substances Gmbh & Co Keg Procede pour produire des liquides ioniques, des solides ioniques ou leurs melanges
DE102006002355A1 (de) * 2006-01-11 2007-07-12 Hartmut Ricken Vorrichtung und Verfahren zur thermischen Koppelung zwischen Kokille und Kühler während des Stranggießens
WO2008052860A1 (fr) 2006-10-10 2008-05-08 Proionic Production Of Ionic Substances Gmbh & Co Keg Procédé de production de carbonates quaternaires
WO2008052863A2 (fr) 2006-10-10 2008-05-08 Proionic Production Of Ionic Substances Gmbh & Co Keg Procédé de mise en réaction de 2-carboxylates 1,3 hétéroaromatiques avec de l'eau
WO2013013788A1 (fr) * 2011-07-22 2013-01-31 Heinrich Marti Procédé d'exploitation d'énergies thermiques, de préférence dans une installation de coulée continue
WO2013113461A1 (fr) 2012-02-02 2013-08-08 Vtu Holding Gmbh Liquides ioniques pour le refroidissement dans un environnement à haute température

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114799105A (zh) * 2022-05-06 2022-07-29 山东钢铁股份有限公司 一种结晶器钢水辅助冷却装置及使用方法

Also Published As

Publication number Publication date
EP3113895A1 (fr) 2017-01-11
ES2747801T3 (es) 2020-03-11
EP3113895B1 (fr) 2019-07-03
AT515566A1 (de) 2015-10-15

Similar Documents

Publication Publication Date Title
DE60317527T2 (de) Doppelwalzengiessen von magnesium und magnesiumlegierungen
DE202013012631U1 (de) In-Situ-Homogenisierung von DC-Gussmetallen mit zusätzlichem Abschrecken
DE60024142T2 (de) Giesssystem und giessverfahren für hochreinen und feinkörnigen metallguss
DE1933412A1 (de) Verfahren und Vorrichtung zur Umformung von Material vom fluessigen in den festen Zustand
EP0571703B1 (fr) Procédé de fabrication d'articles moulés par la coulée de precision
DE69531965T2 (de) Metallischer Rohblock für die plastische Umformung
EP3113895B1 (fr) Procédé et installation servant à refroidir des coquilles refroidies par un fluide pour des processus en métallurgie
AT409233B (de) Verfahren und anordnung zum herstellen von gusskörpern aus metallen
AT406384B (de) Verfahren zum elektroschlacke-strangschmelzen von metallen
EP0035958A2 (fr) Coquille pour coulée continue
EP1925681B1 (fr) Procédé de refonte de métaux sous laitier électroconducteur et lingotière à cet effet
DE60036646T2 (de) Giesssysteme und verfahren mit hilfskühlung der flüssigen oberfläche der giesskörper
WO2007014916A1 (fr) Procede pour realiser des corps moules contenant du metal, et dispositif a cet effet
CA1264522A (fr) Methode de coulee continue, et lingot ainsi produit
DE2804487C2 (de) Vorrichtung zum Auffüllen von Blockköpfen abgegossener Metallblöcke nach dem Elektroschlackenumschmelzverfahren
DE891725C (de) Verfahren zum stetigen Giessen metallischer Werkstoffe
CN105088038A (zh) 一种高导热耐腐蚀镁合金及其制备方法
DE2001256B2 (de) Vorrichtung zur herstellung von bloecken
DE3721945C2 (fr)
DE892230C (de) Verfahren zum Stranggiessen metallischer Werkstoffe
AT395389B (de) Verfahren zur herstellung von block- und formgussstuecken sowie vorrichtung zur herstellung derselben
DE640080C (de) Giessform zum Herstellen von Ingots
AT504574B1 (de) Verfahren zum elektroschlacke umschmelzen von metallen
DE102018130698A1 (de) Walzbarren-Kokille für den Strangguss von Aluminium und Aluminiumlegierungen
DE2250710A1 (de) Verfahren zum erzeugen grosser stahlbloecke unter verwendung des abschmelzens einer elektrode

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15710448

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015710448

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015710448

Country of ref document: EP