Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
EP0786531B2 - Procédé et dispositif pour la refusion de métaux sous forme de barres - Google Patents
[go: Go Back, main page]

EP0786531B2 - Procédé et dispositif pour la refusion de métaux sous forme de barres - Google Patents

Procédé et dispositif pour la refusion de métaux sous forme de barres Download PDF

Info

Publication number
EP0786531B2
EP0786531B2 EP96120752A EP96120752A EP0786531B2 EP 0786531 B2 EP0786531 B2 EP 0786531B2 EP 96120752 A EP96120752 A EP 96120752A EP 96120752 A EP96120752 A EP 96120752A EP 0786531 B2 EP0786531 B2 EP 0786531B2
Authority
EP
European Patent Office
Prior art keywords
billet
chill mould
cross
electrode
slag bath
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
EP96120752A
Other languages
German (de)
English (en)
Other versions
EP0786531B1 (fr
EP0786531A1 (fr
Inventor
Wolfgang Dipl.-Ing. Dr.Mont. Holzgruber
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3482892&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0786531(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Inteco Internationale Techinsche Beratung GmbH filed Critical Inteco Internationale Techinsche Beratung GmbH
Publication of EP0786531A1 publication Critical patent/EP0786531A1/fr
Publication of EP0786531B1 publication Critical patent/EP0786531B1/fr
Application granted granted Critical
Publication of EP0786531B2 publication Critical patent/EP0786531B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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

Definitions

  • the invention relates to a method for remelting metals - in particular steels and Ni and Co base alloys - into one strand by melting at least one self-consumable electrode at a rate of melting in kg / h in an electrically conductive slag bath, which in a short, is provided downwardly open mold.
  • the invention covers a device for carrying out this method.
  • DE 1 932 763 A discloses a device for carrying out the electroslag refining process with a water-cooled, vertically arranged mold for ingots, in particular of high-alloy steel; this mold is double-walled and offers a lower region determining the outer dimensions of the ingot to be produced, whose inner cross-section is at most equal to the cross-section of a consumable electrode to be melted in a hot Schläkkenbad, wherein the lower Kokillen Scheme merges into an upwardly preferably conically widening intermediate region and this in turn into an extended upper mold area.
  • the stream takes the way to the crude block over the slag bath.
  • GB 1 413 508 A discloses a mold, in the mold wall a non-consumable current-conducting element is installed and connected via a rectifier so with the power supply, that both the electrode and the casting cross-section - -. With respect to the non-consumable element - constantly are electrically negatively polarized.
  • DE 1 483 646 A and AT 320 884 B likewise disclose variants of the electroslag remelting process.
  • the self-consumable electrode methods described therein enable the production of remelt blocks with a good surface at a slow block build-up speed.
  • the resulting low sump depths lead to a uniform solidification between the edge and core and thus to a good internal quality of the remelted blocks
  • the use of short molds with lowerable bottom plates and electrode replacement also allows here to form relatively long strands.
  • generation of the required consumable electrodes becomes difficult, and the process costs due to the then low reflow rates become high.
  • the Abschmelzraten the ESU process maximum 100 - 200 kg per hour at the same formats. During continuous casting, this results in swamps between 4 m and 8 m. By contrast, the sump depths in the ESU method measure 100 to 300 mm.
  • AT-PS 399 463 proposes to cast strands of high-alloy steels with much lower casting speeds - as they are usual in continuous casting - to achieve an improved core zone while covering the casting mirror by an electrically heated slag bath in order to avoid any disadvantages with regard to the formation of the surface due to excessive cooling. It is assumed that the liquid metal can be made available for a long time at a constant temperature from a heatable pan.
  • DE 23 40 525 A1 discloses a device which contains at least one electrode with a mold having an expanded mold part; the slag bath extends into the widened part of the mold, to the outside of a current-conducting element leads.
  • a cylindrical outlet part connects, which determines the strand cross-section of an ingot, wherein the one pole of the power supply via a terminal to the electrode or the other pole via the terminal to the mold in the region of the enlarged part is connected or via a pipe and a platform with that ingot.
  • the mold can be installed in a working platform and the strand can be pulled down.
  • the strand may also be built on a fixed bottom plate and the mold raised in the manner in which the strand grows.
  • the removal of the strand or raising the mold can be continuous or stepwise.
  • the melt stream flows through the slag between the tip of the Etekirode and the melt sump or, in the case of biphilic or three-phase fed plants, between the electrodes.
  • Such current conduction is also possible in the method according to the invention.
  • Electrode is connected to a pole of the power source whose other pole is connected to both the strand and with the / the current-conducting element (s) in the mold wall, the inventive assignment of a control device to the narrower outlet part of the mold for the continuous monitoring of the position the phase boundary between the slag bath and the metal mirror, below, the control device drive rollers are provided for the strand withdrawal, which are also designed as contacts for the return current from the strand to the power source.
  • the one pole of a - either AC or DC donating - power source 10 is connected via a feed line 12 with a suspension device 14 of a Abschmelzelektrode 16.
  • the Elekrode 16 is moved by a not reproduced in detail in the drawing device so that the free end of the electrode 17 is always immersed in a slag 18.
  • the slag bath 18 is provided in a mold 20 which, in its cross-sectionally funnel-like mold bottom 22, has a tubular outlet part 24 for a remelt strand 26 of a diameter D formed therein.
  • the mold 20 At the upper edge of its wall 28, the mold 20 has a radially projecting flange 30, which serves as a support for a counter-flange 32 of a gas-tight placed the electrode 16 surrounding hood 34.
  • the power supply to the other pole of the power source 10 is carried out either on strand 26 via trained as a current collector drive rollers 36 and - a Hochstromtrenner 38 containing - high current return line 40 or via the mold wall 28 built-in current collector 42 and another, subsequent high-current return line 40 a with high-current separator 38 a . Also possible is a power supply via strand 26 and pantograph 42 together while the return line is selected by pressing the aforementioned high-current separator 38 and 38 a .
  • the proportion of current flowing through the current collectors 42 and the driving rollers 36 as contacts - when both in the respective high-current return lines 40, 40 a provided high-current separator 38, 38 a are connected so that a passage of current is made possible - depends on the ratio of the resistors in the slag bath 18. These are determined by the height of the slag bath 18 with respect to the current collectors 42 and the distance of the free end 17 of the electrode 16 from the metal mirror 44 in the mold 20 for the remelting strand 26 solidifying in its outlet part 24.
  • the Umschmelzstrang 26 is lowered by the drive rollers 36 according to the melting of the Abschmelzelektrode 16 and the mirror 44 of the liquid metal in the narrower outlet part 24 of the mold 20 by a control device, in particular a radioactive radiation source 46 monitored.
  • a control device in particular a radioactive radiation source 46 monitored.
  • the driving rollers 36 also serve as a contact for the current return line 40 from the strand 26 to the source of stomata 10.
  • Cutting the desired product sections from the remelt strand 26 is possible, for example, by means of a flame cutting system indicated at 48.
  • the first consumable electrode 16 If the first consumable electrode 16 is consumed, it can be removed from the melting region by means (not shown here) and replaced by a new electrode 16a , which reaches a melting position from a waiting position sketched on the right, so that the melting process can continue can; By melting several electrodes 16 in succession, a continuous operation is made possible.
  • the electrode 16, 16 a and the slag 18 are protected by this - as I said, sealed by means of its mating flange 32 against the Kokillenflansch 30 hood 34, 34 a against air access.
  • the remelting can take place under a controlled atmosphere and in the absence of atmospheric oxygen, which also enables the production of highly pure remelting strands 26 and prevents the combustion of oxygen-containing elements.
  • This melting electrodes 16 are to be used, the cross-sectional area in relation to the G devisquerites can be described as large.
  • the Kokillenhub was adjusted so that the steel mirror was held about 20 to 30 mm below the funnel neck in the lower mold part with 160 mm diameter.
  • the electrical power was adjusted to 750 kW at 10 KA and 75 volts in the slag bath 18, the energy being introduced via the electrode 16 into the slag bath 18 and dissipated via both the string 26 and the mold wall 28 of the funnel-shaped upper portion.
  • a melting rate between 820 and 900 kg / h arose. Accordingly, the mold 20 was raised at a mean speed of 87 to 95 mm / min / with the lifting stepwise with about 10 mm stride. The stroke frequency was controlled and controlled via a radioactive pouring mirror measurement.
  • a strand 26 about 3.0 m in length was produced.
  • the surface finish was good, so that no surface treatment was required before hot working.
  • Strand 26 was easily forged to a billet of 100 mm square on a forging hammer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Continuous Casting (AREA)

Claims (8)

  1. Procédé de refusion de métaux, en particulier d'aciers tels que les alliages à base Ni et Co, en une barre (26) par fusion d'au moins une électrode (16) auto-consommable, avec un débit de fusion exprimé en kg/h, dans un bain de laitier (18) électriquement conducteur, se trouvant dans un moule métallique ou lingotière courte, ouverte vers le bas,
    caractérisé en ce que
    on impose un débit de fusion qui correspond à 1,5 à 30 fois le diamètre (D, Däq) de la barre en mm, le rapport entre la surface de la section transversale d'une ou plusieurs électrode(s) de fusion (16) et la surface de section transversale de la section transversale de coulée ou de la barre (26) en cours de fabrication étant choisi égal ou supérieur à 1,0, le courant de fusion étant guidé entre l'électrode (16), d'une part, ainsi que la barre (26) et/ou la lingotière réalisée sous forme de lingotière en entonnoir, d'autre part, et que la limite de phase, entre le bain de laitier et le niveau de métal (44), est surveillé au moyen d'un dispositif de contrôle (46), et en ce que la barre se forme à la partie inférieure, rétrécie, de la lingotière en entonnoir, alors que le bain de laitier s'étend dans la partie supérieure évasée de la lingotière.
  2. Procédé selon la revendication 1, caractérisé en ce que le diamètre équivalent (Däq) de la barre présentant une section transversale différente de la section ronde, est calculé par la formule Däq = U/π, à partir du périmètre (U) de la section transversale de coulée.
  3. Procédé de refusion de métaux dans une lingotière en forme d'entonnoir selon la revendication 1 ou 2, caractérisé en ce le débit de fusion en kg/h correspond à 5 à 15 fois le diamètre de barre équivalent (Däq) calculé à partir du périmètre (U) de la section transversale de coulée.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la barre formée est extraite en continu de la lingotière, le cas échéant la barre formée étant fixe et la lingotière étant levée en continu.
  5. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la barre formée est extraite par étapes de la lingotière, le cas échéant la barre formée étant fixe et la lingotière étant levée par étapes.
  6. Procédé selon la revendications 4, caractérisé en ce que la lingotière est déplacée de façon oscillante.
  7. Procédé selon la revendication 5, caractérisé en ce que, après chaque étape de course, on effectue directement une étape de contre-course dans la direction opposée, la longueur de course de l'étape de contre-course étant choisie au plus égale à 60% de la longueur de course de l'étape de course précédente.
  8. Dispositif pour la mise en oeuvre du procédé selon au moins l'une des revendications précédentes, avec au moins une électrode (16) ainsi qu'une lingotière (20) associée à une source de courant électrique (10) pour un bain de laitier (18) s'étendant dans une partie (22) de la lingotière évasée vers le haut, au moins un élément (42) conducteur du courant électrique dans la partie de lingotière évasée (22) de la paroi de lingotière (28), ainsi qu'une partie de sortie (24) se raccordant vers le bas à la partie de lingotière et déterminant la section transversale de barre, l'électrode (16) étant raccordée à un pôle de la source de courant (10) et son autre pôle étant relié aussi bien à la barre (26) qu'également au(x) élément(s) (42) conducteur(s) du courant électrique dans la paroi (28) de la lingotière, caractérisé en ce que, à la partie de sortie (24) plus étroite de la lingotière (28), est associé un dispositif de contrôle (46 pour obtenir une surveillance continue de la position de la limite de phase entre le bain de laitier et le niveau de métal (44), et qu'au dessous du dispositif de contrôle sont prévus des rouleaux d'entraînement (36) pour assurer l'extraction de la barre, rouleaux d'entraînement (36) qui sont réalisés également en tant que contacts pour le bouclage de retour électrique (40) de la barre (26) à la source électrique (10).
EP96120752A 1996-01-29 1996-12-21 Procédé et dispositif pour la refusion de métaux sous forme de barres Expired - Lifetime EP0786531B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0015196A AT406384B (de) 1996-01-29 1996-01-29 Verfahren zum elektroschlacke-strangschmelzen von metallen
AT151/96 1996-01-29
AT15196 1996-01-29

Publications (3)

Publication Number Publication Date
EP0786531A1 EP0786531A1 (fr) 1997-07-30
EP0786531B1 EP0786531B1 (fr) 2000-07-19
EP0786531B2 true EP0786531B2 (fr) 2006-08-02

Family

ID=3482892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96120752A Expired - Lifetime EP0786531B2 (fr) 1996-01-29 1996-12-21 Procédé et dispositif pour la refusion de métaux sous forme de barres

Country Status (5)

Country Link
US (1) US5799721A (fr)
EP (1) EP0786531B2 (fr)
JP (1) JP3949208B2 (fr)
AT (1) AT406384B (fr)
DE (1) DE19654021C2 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19614182C1 (de) * 1996-04-11 1997-07-31 Inteco Int Techn Beratung Wassergekühlte Kokille zum Herstellen von Blöcken oder Strängen sowie deren Verwendung
DE19921161B4 (de) * 1999-05-07 2011-01-20 Ald Vacuum Technologies Ag Elektroschlacke-Umschmelzanlage mit einer Kokille und einer Haube
AT408528B (de) * 1999-06-08 2001-12-27 Inteco Int Techn Beratung Verfahren und vorrichtung zur kontinuierlichen herstellung von gegossenen oder umgeschmolzenen strängen nach einem elektroschlacke-verfahren
AT409233B (de) * 2000-02-07 2002-06-25 Inteco Int Techn Beratung Verfahren und anordnung zum herstellen von gusskörpern aus metallen
JP2001262245A (ja) * 2000-03-21 2001-09-26 General Electric Co <Ge> 下つぎ式エレクトロスラグ精錬装置及び方法
RU2174154C1 (ru) * 2000-08-11 2001-09-27 Открытое акционерное общество "Новолипецкий металлургический комбинат" Кристаллизатор для электрошлаковой наплавки
RU2174153C1 (ru) * 2000-08-15 2001-09-27 Открытое акционерное общество "Новолипецкий металлургический комбинат" Способ электрошлаковой наплавки прокатных валков
AT410412B (de) * 2000-11-10 2003-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke umschmelzen von metallen
RU2190029C2 (ru) * 2000-11-13 2002-09-27 Сибирский государственный индустриальный университет Способ получения полых слитков электрошлаковой наплавкой
AT410413B (de) * 2000-11-14 2003-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke umschmelzen von metallen
US20050173092A1 (en) * 2004-02-10 2005-08-11 Kennedy Richard L. Method and apparatus for reducing segregation in metallic ingots
RU2279954C2 (ru) * 2004-06-28 2006-07-20 Иван Сергеевич Сарычев Способ электрошлаковой наплавки прокатных валков
AU2006279270A1 (en) * 2005-08-11 2007-02-15 Advanced Intellectual Holdings Pty Ltd Smelting furnace
RU2320735C2 (ru) * 2006-03-21 2008-03-27 Общество С Ограниченной Ответственностью "Предприятие Урал" Способ электрошлакового получения заготовок штампов для прессо-прокатной линии производства железнодорожных колес
DE202012010150U1 (de) 2012-10-24 2012-11-29 Egon Evertz Kg (Gmbh & Co.) Anlage zum Elektro-Schlacke-Umschmelzen
DE102015117661A1 (de) * 2015-07-27 2017-02-02 Ald Vacuum Technologies Gmbh Elektroschlacke-Umschmelzanlage
JP6528992B2 (ja) * 2015-09-09 2019-06-12 日立金属株式会社 鋳造装置
CN111118302B (zh) * 2019-12-31 2022-04-19 浙江正达模具有限公司 金属电渣重熔用结晶器和电渣重熔装置以及电渣重熔方法
DE102021209501B4 (de) 2021-08-30 2023-05-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Stranggießeinrichtung und Verfahren zum Stranggießen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018065A1 (de) † 1969-06-16 1971-02-25 Inst Elektroswarki Patona Anlage zum Elektroschlacke Um schmelzen verzehrbarer Elektroden
DE2340525A1 (de) † 1973-08-10 1975-02-20 Leybold Heraeus Gmbh & Co Kg Anordnung zur durchfuehrung von elektroschlacke-umschmelzprozessen in trichterfoermigen kokillen
DE2632863B1 (de) † 1976-07-21 1977-09-29 Inst Elektroswarki Patona Einrichtung zur herstellung von grosstonnagigen metallbloecken durch elektroschlackenumschmelzen
DE2942485A1 (de) † 1979-10-20 1981-04-30 Leybold-Heraeus GmbH, 5000 Köln Verfahren zum herstellen von ferrozirkon mit praktisch beliebigem eisengehalt
DE3230784A1 (de) † 1981-08-20 1983-03-17 Cabot Corp Nachweiseinrichtung und verfahren zum nachweis einer grenzschicht bei durch elektroschlacke-umschmelzen hergestellten hohlkoerpern
DE3721945A1 (de) † 1986-10-27 1988-05-19 Inteco Int Techn Beratung Verfahren und vorrichtung zum betreiben einer druck-elektroschlacke-umschmelzanlage
DE3734339A1 (de) † 1987-03-03 1988-09-15 Inteco Int Techn Beratung Verfahren und vorrichtung zum elektroschlacke-stranggiessen von staehlen und legierungen
US5300781A (en) † 1991-12-09 1994-04-05 Kay-Ray/Sensall, Inc. Non-hydrogenous process level measurement

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1483646A1 (de) * 1965-06-11 1969-09-25 Suedwestfalen Ag Stahlwerke Verfahren und Vorrichtung zum Herstellen von Gussbloecken,vorzugsweise Stahlbloecken
FR1513573A (fr) 1967-01-06 1968-02-16 Soc Metallurgique Imphy Procédé et dispositif pour l'affinage du métal dans une installation de coulée continue
SE332833B (sv) 1968-06-27 1977-09-19 Asea Ab Kokill for tillverkning av got av stal och metallegeringar genom elektroslaggraffineringsmetoden
GB1246676A (en) * 1968-10-08 1971-09-15 Ts Lab Avtomatiki Electroslag remelting of metal
SE364648B (fr) 1970-12-04 1974-03-04 Asea Ab
GB1413508A (en) * 1972-08-25 1975-11-12 British Steel Corp Secondary refining process
JPS511643B2 (fr) * 1972-08-28 1976-01-19
US3847205A (en) * 1972-10-03 1974-11-12 Special Metals Corp Control apparatus for continuously casting liquid metal produced from consumable electrodes
DE2328804C2 (de) * 1973-06-06 1975-07-17 Leybold-Heraeus Gmbh & Co Kg, 5000 Koeln Verfahren zum Elektroschlacke-Umschmelzen In einer trichterförmigen Kokille
DE2505378C3 (de) * 1975-02-08 1981-01-29 Leybold-Heraeus Gmbh, 5000 Koeln Verfahren zum Herstellen von Abschmelzelektroden für die Rückgewinnung von Metallanteilen aus dem Schleifstaub hochwertiger Metalle und Legierungen
US4145563A (en) * 1976-04-22 1979-03-20 Venjukovsky Armaturny Zavod Plant for and method of electroslag remelting of metals and alloys
US4291744A (en) * 1979-02-14 1981-09-29 Medovar Boris I Apparatus for electroslag remelting of consumable electrodes
JPS58144569A (ja) * 1982-02-19 1983-08-27 Hitachi Ltd 超電導回転子
AT388751B (de) * 1987-01-09 1989-08-25 Inteco Int Techn Beratung Verfahren zur herstellung von bloecken aus abschmelzelektroden in kurzen gleitkokillen
US4919191A (en) * 1988-05-17 1990-04-24 Jeneric/Pentron Incorporated Molten-metal forming method and apparatus which are bottom-loading, bottom-pouring and bottom-unloading
JP3072199B2 (ja) * 1992-10-22 2000-07-31 株式会社日本製鋼所 Ｎｉ−Ｆｅ基超耐熱合金鋳塊の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018065A1 (de) † 1969-06-16 1971-02-25 Inst Elektroswarki Patona Anlage zum Elektroschlacke Um schmelzen verzehrbarer Elektroden
DE2340525A1 (de) † 1973-08-10 1975-02-20 Leybold Heraeus Gmbh & Co Kg Anordnung zur durchfuehrung von elektroschlacke-umschmelzprozessen in trichterfoermigen kokillen
DE2632863B1 (de) † 1976-07-21 1977-09-29 Inst Elektroswarki Patona Einrichtung zur herstellung von grosstonnagigen metallbloecken durch elektroschlackenumschmelzen
DE2942485A1 (de) † 1979-10-20 1981-04-30 Leybold-Heraeus GmbH, 5000 Köln Verfahren zum herstellen von ferrozirkon mit praktisch beliebigem eisengehalt
DE3230784A1 (de) † 1981-08-20 1983-03-17 Cabot Corp Nachweiseinrichtung und verfahren zum nachweis einer grenzschicht bei durch elektroschlacke-umschmelzen hergestellten hohlkoerpern
DE3721945A1 (de) † 1986-10-27 1988-05-19 Inteco Int Techn Beratung Verfahren und vorrichtung zum betreiben einer druck-elektroschlacke-umschmelzanlage
DE3734339A1 (de) † 1987-03-03 1988-09-15 Inteco Int Techn Beratung Verfahren und vorrichtung zum elektroschlacke-stranggiessen von staehlen und legierungen
US5300781A (en) † 1991-12-09 1994-04-05 Kay-Ray/Sensall, Inc. Non-hydrogenous process level measurement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Konferenzpapier des 3. Internationalen Symposions zu Elektroschlacke- und anderer spezieller Schmelztechnologie vom 8.-10.6.71, Teil III, s. 221-239; Holzgruber et al. "Metallurgical and Economical Considerations for the Lay Out of Modern ESR Plants based on Results obtained in Böhler ESR Units" †

Also Published As

Publication number Publication date
US5799721A (en) 1998-09-01
DE19654021A1 (de) 1997-07-31
EP0786531B1 (fr) 2000-07-19
AT406384B (de) 2000-04-25
JPH09206890A (ja) 1997-08-12
ATA15196A (de) 1999-09-15
DE19654021C2 (de) 2001-05-31
JP3949208B2 (ja) 2007-07-25
EP0786531A1 (fr) 1997-07-30

Similar Documents

Publication Publication Date Title
EP0786531B2 (fr) Procédé et dispositif pour la refusion de métaux sous forme de barres
EP1253986B1 (fr) Procede et dispositif de fabrication de corps coules en metal
DE60036646T2 (de) Giesssysteme und verfahren mit hilfskühlung der flüssigen oberfläche der giesskörper
AT410412B (de) Verfahren zum elektroschlacke umschmelzen von metallen
DE2655602C2 (de) Verfahren und Vorrichtung zur Herstellung von Blöcken
DE1952209A1 (de) Vorrichtung zum Erzeugen von Metallhohlbloecken
DE1483646A1 (de) Verfahren und Vorrichtung zum Herstellen von Gussbloecken,vorzugsweise Stahlbloecken
DE2804487C2 (de) Vorrichtung zum Auffüllen von Blockköpfen abgegossener Metallblöcke nach dem Elektroschlackenumschmelzverfahren
DE1608082C3 (de) Vorrichtung zum Feinen von Stahl mittel» Schlacke in einer Stranggieß kokille
EP1334214B1 (fr) Procede et dispositif pour la fabrication de lingots ou de barres metalliques par fusion d&#39;electrodes dans un bain de laitier electroconducteur
DE2001256B2 (de) Vorrichtung zur herstellung von bloecken
DE3436957A1 (de) Metallveredelungsverfahren
EP1257675B1 (fr) Procede et systeme pour la production de corps coules creux en metal
DE2632863C2 (de) Einrichtung zur Herstellung von großtonnagigen Metallblöcken durch Elektroschlackenumschmelzen
DE1929720A1 (de) Verfahren zur Direktreduktion und zum kontinuierlichen Giessen von metallischen Werkstoffen
EP0229589B1 (fr) Dispositif et procédé de coulée continue de métaux
DE2113521A1 (de) Elektroschlacke-Umschmelzverfahren und Vorrichtung zu dessen Durchfuehrung
DE60017077T2 (de) Elektro-Schlacke-Umschmelzsysteme mit Bodenausguss und kontrolliertem Elektrostrompfad
AT314751B (de) Verfahren und Vorrichtungen zum Herstellen von Hohlblöcken nach dem Elektroschlackenumschmelzverfahren
DE2251992A1 (de) Verfahren und vorrichtung zum elektroschlackefeinen von metallen, insbesondere zur herstellung von rohrfoermigen bloecken und zum umhuellen von achsen oder spindeln
DE2654834A1 (de) Verfahren und vorrichtungen zur herstellung von bloecken
AT328634B (de) Verfahren zur herstellung grosser stahlbrammen
DE3436958A1 (de) Metallveredelungsverfahren
DE1952010A1 (de) Anlage zum Elektroschlacke-Giessen von hohlen Metallbloecken
DE1254296B (de) Vorrichtung zur Elektrodenfuehrung bei elektrischer Blockkopfbeheizung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH FR GB IT LI SE

17P Request for examination filed

Effective date: 19971119

17Q First examination report despatched

Effective date: 19981104

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH FR GB IT LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: HIEBSCH & PEEGE AG PATENTANWAELTE

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20001012

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ALD VACUUM TECHNOLOGIES AG

Effective date: 20010411

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

APAA Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOS REFN

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20060802

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): BE CH FR GB IT LI SE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)

Effective date: 20060802

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

REG Reference to a national code

Ref country code: SE

Ref legal event code: RPEO

ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: INTECO INTERNATIONALE TECHNISCHE BERATUNG GESELLS

Free format text: INTECO INTERNATIONALE TECHNISCHE BERATUNG GESELLSCHAFT MBH#WIENER STRASSE 25#A-8600 BRUCK A.D. MUR (AT) -TRANSFER TO- INTECO INTERNATIONALE TECHNISCHE BERATUNG GESELLSCHAFT MBH#WIENER STRASSE 25#A-8600 BRUCK A.D. MUR (AT)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20121224

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20121217

Year of fee payment: 17

Ref country code: GB

Payment date: 20121227

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20121219

Year of fee payment: 17

Ref country code: SE

Payment date: 20121227

Year of fee payment: 17

Ref country code: FR

Payment date: 20130117

Year of fee payment: 17

BERE Be: lapsed

Owner name: INTERNATIONALE TECHNISCHE BERATUNG G.M.B.H. *INTEC

Effective date: 20131231

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131222

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131221