EP1187943B1 - Procede et dispositif de realisation en continu de tiges coulees ou refondues selon un procede sous laitier electroconducteur - Google Patents

Procede et dispositif de realisation en continu de tiges coulees ou refondues selon un procede sous laitier electroconducteur Download PDF

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Publication number
EP1187943B1
EP1187943B1 EP00929525A EP00929525A EP1187943B1 EP 1187943 B1 EP1187943 B1 EP 1187943B1 EP 00929525 A EP00929525 A EP 00929525A EP 00929525 A EP00929525 A EP 00929525A EP 1187943 B1 EP1187943 B1 EP 1187943B1
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EP
European Patent Office
Prior art keywords
billet
clamping
axis
elements
guide
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
EP00929525A
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German (de)
English (en)
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EP1187943A1 (fr
Inventor
Harald Holzgruber
Wolfgang Holzgruber
Bertram Ofner
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
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Inteco Internationale Techinsche Beratung GmbH
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Publication date
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Publication of EP1187943A1 publication Critical patent/EP1187943A1/fr
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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
    • 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 continuous Making a strand or ingot of metal after the Preamble of claim 1 and a suitable one Contraption.
  • One such method including the device, is JP-A-63 072 840; below the mold are on both sides of the strand path opposite and radially to the strand axis relative to this movable brackets of Clamping devices attached to the power source of the Mold are connected. With these brackets the Strand pulled down.
  • Sh. Sasayama and co-workers describe a process for continuous remelting of self-consumable electrodes after the electro-slag remelting process in a water-cooled Mold with continuous strand withdrawal through a trigger device.
  • A. E. Vokov and co-workers describe a continuous one Process for melting grinding dust in one by a non-edible electrode heated slag bath in a water-cooled mold with continuous Strand withdrawal by a so-called block, clamping and withdrawal device.
  • An oxy-fuel cutting device arranged in the system enables cutting of the generated Umschmelzstrnature.
  • the remelting rates are 210 - 240 kg / h for strands with a diameter of 300 mm so 0.7 - 0.8 kg / h / mm strand diameter.
  • AT 399 463 B is a process for continuous electro-slag casting of steels and alloys, at which the mold level in the water-cooled mold is covered by an electrically conductive slag and in which the slag bath, for example, when passing electricity is heated by immersing auxiliary electrodes.
  • the casting speed should be set in this way be at least 1.5 times that of the Electroslag remelting usual melting rate and at most 50% of the casting speed with conventional Continuous casting is. Information about the type of strand withdrawal are not made.
  • this Devices always at a considerable distance from the water-cooled mold are arranged and located between the water-cooled mold and the strand withdrawal device generally there is a secondary cooling section.
  • the strand withdrawal device In the case of so-called bow systems, the strand withdrawal device must also the task of a continuously working bending and straightening system.
  • Extraction devices for continuously operating electro-slag systems must also be able to be either all or at least part of the To dissipate the melt flow from the generated strand without interruption, being at a short distance from the lower edge of the mold attention to the guidance of the withdrawn strand give is.
  • roller elements For the purpose of strand withdrawal are both roller elements also known as movable jaw systems. Roller elements have the advantage that the Constantly changing points of contact with the strand surface, so that even when using water-cooled rollers an inadmissible Cooling of the strand surface is avoided.
  • the melt flow is derived via rollers possible by using brushes, but with higher ones Current strengths are not easy to implement.
  • US-A-5 799 721 describes a take-off device for one made of a melting material Electrode existing strand.
  • the trigger device has at least two arranged opposite Roll up, at least one of which is driven.
  • the mold becomes emerging strand to at least one regarding its arrangement to the mold axis rigidly arranged guide element in the form of a or several roles of existing role elements by at least one arranged opposite to it Clamping element pressed so that the points of contact of strand surface and guide or clamping element constantly changing, taking at least one of these items is driven for the purpose of strand withdrawal, while the other joins the strand movement and at least over one of these elements makes contact with a power source is.
  • the strand withdrawal is intended to effect this be that at least one role against which the strand is pressed, is driven.
  • the melt flow is expediently derived over the alternately compressible jaws, the The pressing times of the individual jaws should not exceed two minutes.
  • the jaws are preferred also be designed as a vibrating jaw, similar to one Large radius roller during the nip cycle along the Unroll the strand surface.
  • the strand withdrawal movement can then be carried out by one or more driven rollers or at least two jaws take place, of which one is always pressed and at the same time the trigger is made by a suitable device, while the second withdrawn and related to hers on the strand deduction, upper position is reset.
  • the non-driven rollers or pressed-on clamping jaws participate in the strand withdrawal movement, with one the non-driven rollers are designed as measuring rollers can be.
  • suitable device consists of a with respect to the Rigid frame aligned with at least mold axis two water-cooled guide rollers, of which at least one is powered, and at least two are powered connected, pressable against the strand surface Jaws.
  • a water-cooled mold 10 which is also known as known funnel mold can be located there is a slag bath 12 in which a self-consumable Electrode 14 is melted.
  • the melted metal is collected in a melt pool 16; its melt level is designated 18.
  • a strand 20 formed after solidification is drawn down from the mold 10 in the direction x by a driven roller 24, which is arranged in a rigid frame 22 with respect to the mold axis A.
  • a guidance of the strand 20 parallel to the mold axis A is effected by the above-mentioned driven roller 24 and further rollers 24 a , against which the strand 20 is pressed alternately by one of two clamps 26 which can be moved in the vertical direction.
  • a holding device 28 for the lower of the two clamps 26 carries an oxy-fuel cutting device 30 with which the strand 20 produced is in the phase of engagement thereof Terminals 26 can be cut to length.
  • the terminals 26 are via flexible cables 32 and high-current lines 34 with a Power source 36 connected.
  • the alternately pressed jaws of the jaws 26 as Swing jaws executed, their axes in a rigid frame 22 are arranged so that the terminals 26 in the strand withdrawal direction x are movable and with the strand 20 surface in contact with a curvature with a radius has according to their center distance, so that they in pressed state rolls along the strand surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Forging (AREA)
  • Continuous Casting (AREA)

Claims (10)

  1. Procédé de fabrication en continu d'une tige ou d'une barre (20) métallique par la fusion électrique d'un laitier ou par coulée électrique continue de laitier dans une lingotière (10) ouverte vers le bas, à partir duquel la coulée sortant vers le bas traverse au moins un dispositif de serrage (24, 24a, 26) en contact avec une source de courant (36), caractérisé en ce que la barre de coulée continue (20) constituée d'aciers comme des alliages à base de Ni ou de Co est pressée à l'extérieur de la lingotière (10) refroidie à l'eau contre au moins un élément de guidage (24, 24a) disposé de manière rigide par rapport à l'axe de la coulée (A) à l'aide d'au moins un élément de serrage (26) disposé en face de celui-ci, de telle sorte que les zones de la coulée en contact avec les éléments des guidage ou de serrage se modifient à de courts intervalles de temps, moyennant quoi au moins un des éléments de guidage configuré comme un rouleau de guidage (24), passant en travers par rapport à l'axe de la coulée, dont l'axe est à un angle de 90° par rapport à l'axe de la coulée, et l' (les) élément(s) de serrage (26) est (sont) déplacés dans la direction de l'aspiration de la coulée (x).
  2. Procédé selon la revendication 1, caractérisé en ce que, alternativement au moins un des éléments de serrage (26) est pressé contre la coulée (20) et celle-ci est pressé contre l' (les) élément(s) de guidage (24, 24a) et accompagne le mouvement d'aspiration de la coulée, tandis qu'au moins un élément de serrage (26) est retiré de la surface de la coulée et pressé contre la direction d'aspiration de la coulée (x) jusqu'à une position finale supérieure puis à nouveau contre la surface de la coulée et déplacé avec la coulée, avant que l' (les) élément(s) de serrage (26) en prise soient retirés.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'élément de guidage (24, 24a) est roulée le long de la surface de la coulée.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par un temps de contact entre l'élément de serrage (26) et la surface de la coulée de deux minutes maximum.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, pour un fonctionnement continuel, un changement d'électrode est effectué.
  6. Dispositif avec une lingotière (10) avec au moins un dispositif de serrage (24, 24a, 26) disposée en aval et reliée à une source de courant (36), pour la réalisation du procédé selon au moins l'une des revendications 1 à 5, caractérisé en ce que, en tant qu'éléments de guidage (24, 24a), au moins deux rouleaux disposés dans un châssis (22) tournant dans la direction d'aspiration (x) parallèlement à l'axe de la lingotière (A), et au moins un élément de serrage (26) disposé en face de ceux-ci, qui peut être pressé dans la direction des éléments de guidage contre la coulée (20) et qui peut être déplacé aussi bien à l'état pressé qu'à l'état libre en direction de l'axe de la lingotière (A), moyennant quoi un des éléments de guidage (24, 24a) est entraíné.
  7. Dispositif selon la revendication 6, caractérisé en ce que, en face des éléments de guidage configurés comme des rouleaux (24, 24a), des joues de serrage, en tant qu'éléments de serrage (26), peuvent être déplacés en direction de l'axe de la coulée (A).
  8. Dispositif selon la revendication 6 ou 7, caractérisé par un châssis rigide (22) pour le logement des éléments de guidage (24, 24a) en forme de rouleaux et des éléments de serrage (26) situés de l'autre côté de la coulée.
  9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que les éléments de serrage (26) sont configurées comme des joues oscillantes dont la surface de contact avec la surface de la coulée comporte une courbure dont le rayon correspond à sa distance de l'axe d'oscillation.
  10. Dispositif selon l'une des revendications 6 à 9, caractérisé en ce que les éléments de serrage (26) du dispositif de serrage sont reliés avec la source de courant (36) et l'élément de serrage (26) éloigné de la lingotière est muni d'un dispositif d'oxycoupage (30).
EP00929525A 1999-06-08 2000-05-12 Procede et dispositif de realisation en continu de tiges coulees ou refondues selon un procede sous laitier electroconducteur Expired - Lifetime EP1187943B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0100999A AT408528B (de) 1999-06-08 1999-06-08 Verfahren und vorrichtung zur kontinuierlichen herstellung von gegossenen oder umgeschmolzenen strängen nach einem elektroschlacke-verfahren
AT100999 1999-06-08
PCT/EP2000/004290 WO2000075386A1 (fr) 1999-06-08 2000-05-12 Procede et dispositif de realisation en continu de tiges coulees ou refondues selon un procede sous laitier electroconducteur

Publications (2)

Publication Number Publication Date
EP1187943A1 EP1187943A1 (fr) 2002-03-20
EP1187943B1 true EP1187943B1 (fr) 2003-07-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00929525A Expired - Lifetime EP1187943B1 (fr) 1999-06-08 2000-05-12 Procede et dispositif de realisation en continu de tiges coulees ou refondues selon un procede sous laitier electroconducteur

Country Status (6)

Country Link
US (2) US6568463B1 (fr)
EP (1) EP1187943B1 (fr)
JP (1) JP4563631B2 (fr)
AT (1) AT408528B (fr)
DE (2) DE10023098A1 (fr)
WO (1) WO2000075386A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP2690981A4 (fr) 2011-03-28 2016-08-03 Royal Canadian Mint Monnaie Royale Canadienne Système et procédé pour réduire le matériau excédentaire sur les produits de monnaie
JP6343949B2 (ja) * 2014-02-04 2018-06-20 日立金属株式会社 鋳片引抜装置および鋳片引抜方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752216A (en) * 1969-05-14 1973-08-14 Sandel Ind Inc Apparatus for homogeneous refining and continuously casting metals and alloys
JPS4840532B1 (fr) * 1970-04-03 1973-12-01
US4108237A (en) * 1977-03-18 1978-08-22 Mikhail Yakovlevich Brovman Machine for semicontinuous casting of metals
JPH0635045B2 (ja) * 1986-06-26 1994-05-11 大同特殊鋼株式会社 エレクトロスラグ再溶解炉におけるインゴツト引抜装置
JPS6372840A (ja) * 1986-09-16 1988-04-02 Daido Steel Co Ltd エレクトロスラグ再溶解法
JPS6372839A (ja) * 1986-09-16 1988-04-02 Daido Steel Co Ltd エレクトロスラグ再溶解におけるインゴツト引抜速度制御方法および制御装置
AT399463B (de) * 1987-03-03 1995-05-26 Inteco Int Techn Beratung Verfahren zum elektroschlacke-stranggiessen von stählen und legierungen
DE4323326C2 (de) 1993-07-07 1997-02-06 Mannesmann Ag Auszieheinrichtung einer Stranggießanlage
AT406384B (de) * 1996-01-29 2000-04-25 Inteco Int Techn Beratung Verfahren zum elektroschlacke-strangschmelzen von metallen
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

Also Published As

Publication number Publication date
WO2000075386A1 (fr) 2000-12-14
US6834707B2 (en) 2004-12-28
JP4563631B2 (ja) 2010-10-13
DE10023098A1 (de) 2000-12-14
ATA100999A (de) 2001-05-15
DE50002922D1 (de) 2003-08-21
JP2003501267A (ja) 2003-01-14
AT408528B (de) 2001-12-27
EP1187943A1 (fr) 2002-03-20
US20030111204A1 (en) 2003-06-19
US6568463B1 (en) 2003-05-27

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