EP3328576B1 - Installation de refusion sous laitier électroconducteur - Google Patents

Installation de refusion sous laitier électroconducteur Download PDF

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Publication number
EP3328576B1
EP3328576B1 EP16763716.4A EP16763716A EP3328576B1 EP 3328576 B1 EP3328576 B1 EP 3328576B1 EP 16763716 A EP16763716 A EP 16763716A EP 3328576 B1 EP3328576 B1 EP 3328576B1
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EP
European Patent Office
Prior art keywords
mold
electro
slag remelting
installation according
consumable electrode
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.)
Active
Application number
EP16763716.4A
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German (de)
English (en)
Other versions
EP3328576A1 (fr
Inventor
Henrik Franz
Harald Scholz
Ulrich Biebricher
Thomas KILZER
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.)
ALD Vacuum Technologies GmbH
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ALD Vacuum Technologies GmbH
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Publication date
Application filed by ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Priority to SI201630377T priority Critical patent/SI3328576T1/sl
Publication of EP3328576A1 publication Critical patent/EP3328576A1/fr
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Publication of EP3328576B1 publication Critical patent/EP3328576B1/fr
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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
    • 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
    • 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
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/06—Electrodes
    • H05B7/07—Electrodes designed to melt in use

Definitions

  • the invention relates to an electroslag remelting plant with an open-top mold and at least one Abschmelzelektrode, which projects into the mold.
  • the end of the consumable electrode which protrudes into the mold is melted off.
  • the molten metal falls through a molten slag above a melt in the mold, and by a chemical reaction of the metal with the slag these contaminants such as sulfur and other non-metallic elements are removed. Inclusions in the electrode are thus transferred to the slag and do not get into the block.
  • the necessary temperature for melting the Abschmelzelektrode is generated by an electric current with high electric current flowing through the Abschmelzelektrode the slag and the melt.
  • the slag is an electrical resistance that heats up due to the current passage.
  • the slag is liquefied and heated.
  • the two electric poles of the slag form on the one hand the building up block in the mold and on the other hand the electrode. Due to the evolution of heat in the slag, the electrode melts at the interface to the slag.
  • the higher the temperature of the slag the higher the melting rate of the electrode.
  • the height of the slag temperature is limited. Therefore, only by increasing the cross-sectional area at a constant slag bath temperature can the melting rate be increased.
  • the Abschmelzelektrode is a rod-shaped structure with a round or rectangular cross-section, whose axis is aligned vertically.
  • the melt rate depends on the cross-sectional area, which is related to a plane perpendicular to the electrode axis.
  • the diameter of the mold also determines the sizes of the blocks that are made from the solidified melt.
  • so-called T-molds are used. In the upper, funnel-shaped enlarged portions of the mold dips the Abschmelzelektrode whose cross section is greater than the cross section of the lower, smaller portion of the T-mold, which receives the block.
  • the JP 2009-046715 describes the electrical sliding contact of an electrode rod, at the lower end in the axial extension of the Abschmelzelektrode is attached.
  • the electrode rod can be aligned obliquely to a guide with the sliding contacts.
  • the JP S53-130231 describes a system for drawing the re-solidified melt in a strand consisting of bent and straight sections from the bottom of the mold.
  • a framework consisting of the mold and the Holder for the electrode rod, can be easily tilted to create curved sections.
  • the object of the invention is therefore to provide an electroslag remelting system which, despite a small given Abschmelzelektrodenqueritess has an increased melting rate.
  • the invention provides that the Abschmelzelektrode is oriented obliquely to a vertical, wherein the angle between the axis of the Abschmelzelektrode and the vertical between 20 ° and 60 °.
  • the projecting into the mold end surface of the Abschmelzelektrode runs obliquely according to their inclination to the axis of the Abschmelzelektrode.
  • the effective Abschmelz measurements therefore no longer corresponds to the cross-sectional area, with respect to a plane perpendicular to the axis of the electrode, but with respect to a horizontal plane.
  • the effective melting surface thus increases by the reciprocal of the cosine of the angle between the vertical and the axis of the inclined Abmelzelektrode.
  • the electrode Since the electrode is arranged at an angle, the overall height of the system is reduced or it can be used with constant height longer Abschmelzelektroden.
  • the oblique arrangement makes it possible to hold one or more electrodes close to the location of the subsequent melting position, thus minimizing the time delay when changing electrodes.
  • the angle between the axis of the consumable electrode and the vertical is 45 °.
  • the invention provides that the Abschmelzelektrode is held in a tracking, which is designed so that the Abschmelzelektrode is slidable along its inclined axis.
  • Such tracking can z. B. have a roller bearing.
  • the weight of the Abschmelzelektrode can be distributed over several roles.
  • At least two melting electrodes can be provided which are each provided with a tracking. This allows a quick change of electrodes. One electrode is burned while the other is being prepared in its displacement system and moved to a position above the mold as soon as the previous one is consumed.
  • the mold is cooled, so that the melt solidifies in its lower part and can be discharged as a strand from the open bottom of the mold.
  • a device is provided, which deducts in its lower portion to a strand solidified melt through the bottom of the mold.
  • a separating device can furthermore be provided which is designed so that it is capable of separating the tail of the strand emerging on the bottom of the mold. Furthermore, a deflection device may be provided, which laterally separates the separated end pieces from the mold z. B. derives on a conveyor belt in a magazine or warehouse.
  • the plant according to the invention consists of a mold 1, which consists of a tube 2 of constant cross-section and an upwardly adjoining funnel 3.
  • a Abschmelzelektrode 4 In these immersed a Abschmelzelektrode 4, the axis 5 is obliquely to a vertical 6, which also forms the axis of the tube 2, is arranged.
  • the Abschmelzelektrode 4 is mounted on rollers 7, which form an inclined plane.
  • the Abschmelzelektrode 4 is held by a tracking 8, with the aid of which they can be tracked according to the erosion in the hopper 3 of the mold 1.
  • the forming melt which solidifies due to a not shown cooling in the lower part to a strand 10, which is deducted by a device, not shown here down and possibly through a likewise not shown separating device into individual blocks is shared.
  • a deflection device which is also not shown in detail, laterally via a means, for. B. a conveyor belt, in a magazine or warehouse (not shown) derived.
  • melt 9 is located within the hopper 3, a slag layer 11 having a horizontally extending surface which is touched by the Abschmelzelektrode 4.
  • the amount of the deposition rate is determined by the size of the ablation area 13, that is, the slag layer 11 contacting end surface of the ablation electrode 4.
  • the Abschmelz measurements 13 extends horizontally and thus according to the inclination of the Abschmelzelektrode 4 obliquely to the axis 5. Since the Abschmelzelektrode 4 is obliquely, the Abschmelz Structure 13 increases relative to the cross-sectional area 12 of the Abschmelzelektrode 4, by an amount which is determined by the size of the angle ⁇ between the axis 5 of the Abschmelzelektrode 4 and the vertical 6. At an angle of 45 °, the end surface 13 increases by about 40% relative to the cross-sectional area 12.
  • the funnel 3 has an oblique inlet edge 14 on the side of the consumable electrode 4.
  • the energy for melting the electrode 4 is achieved by a power supply, not shown here.
  • the Abschmelzelektrode 4, the slag layer 11 and the melt 9 and the strand 10 form parts of an electric circuit, the slag layer 11 is the largest resistance, so that there most of the energy is absorbed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)

Claims (9)

  1. Installation de refusion sous laitier électro-conducteur avec une coquille (1) ouverte en haut et au moins une électrode de fusion (4), qui pénètre dans la coquille (1), caractérisée en ce que l'électrode de fusion (4) est orientée en position inclinée par rapport à une verticale (6), l'angle entre l'axe (5) de l'électrode de fusion (4) et la verticale (6) se situant entre 20° et 60°.
  2. Installation de refusion sous laitier électro-conducteur selon la revendication 1, caractérisée en ce que la surface finale de l'électrode de fusion (4), rentrant dans la coquille (1), passe de façon correspondante à sa position inclinée de façon oblique par rapport à l'axe (5) de l'électrode de fusion (4).
  3. Installation de refusion sous laitier électro-conducteur selon la revendication 2, caractérisée en ce que l'angle entre l'axe (5) de l'électrode de fusion (4) et la verticale (6) se situe à 45°.
  4. Installation de refusion sous laitier électro-conducteur selon la revendication 1,2 ou 3 caractérisée en ce que l'électrode de fusion (4) est maintenue dans guidage de suivi (8), qui est constitué de telle sorte que l'électrode de fusion (4) peut être déplacée le long de son axe (5) réglé de façon oblique.
  5. Installation de refusion sous laitier électro-conducteur selon l'une quelconque des revendications précédentes, caractérisée en ce que pour une coquille (1) au moins deux électrodes de fusion (4) sont prévues avec chacune un guidage de suivi (8).
  6. Installation de refusion sous laitier électro-conducteur selon la revendication 4 ou 5, caractérisée en ce que les guidages de suivi (8) peuvent être déplacés alternativement avec les électrodes de fusion (4) sur la coquille (1) au moyen d'un système de déplacement.
  7. Installation de refusion sous laitier électro-conducteur selon l'une quelconque des revendications précédentes, caractérisée en ce que la coquille (1) est refroidie et comporte un dispositif pour extraire à travers le fond de la coquille (1) la matière de fusion (9) solidifiée en une barre dans sa section inférieure.
  8. Installation de refusion sous laitier électro-conducteur selon la revendication 7, caractérisée en ce qu'un dispositif de séparation est prévu, qui est constitué de telle sorte qu'il est en mesure de séparer l'embout de barre ressortant du fond de la coquille (1).
  9. Installation de refusion sous laitier électro-conducteur selon la revendication 8, caractérisée en ce qu'un dispositif de déviation est prévu pour les embouts séparés, qui évacue ceux-ci latéralement vers la coquille (1).
EP16763716.4A 2015-07-27 2016-07-26 Installation de refusion sous laitier électroconducteur Active EP3328576B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201630377T SI3328576T1 (sl) 2015-07-27 2016-07-26 Električna naprava za pretalitev žlindre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015112229 2015-07-27
DE102015117661.0A DE102015117661A1 (de) 2015-07-27 2015-10-16 Elektroschlacke-Umschmelzanlage
PCT/DE2016/100339 WO2017016549A1 (fr) 2015-07-27 2016-07-26 Installation de refusion sous laitier électroconducteur

Publications (2)

Publication Number Publication Date
EP3328576A1 EP3328576A1 (fr) 2018-06-06
EP3328576B1 true EP3328576B1 (fr) 2019-07-17

Family

ID=57795326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16763716.4A Active EP3328576B1 (fr) 2015-07-27 2016-07-26 Installation de refusion sous laitier électroconducteur

Country Status (8)

Country Link
US (1) US20180207719A1 (fr)
EP (1) EP3328576B1 (fr)
JP (1) JP2018522739A (fr)
CN (1) CN108136493A (fr)
DE (1) DE102015117661A1 (fr)
RU (1) RU2689832C1 (fr)
SI (1) SI3328576T1 (fr)
WO (1) WO2017016549A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220051868A (ko) 2020-10-19 2022-04-27 삼성전자주식회사 반도체 장치의 제조를 위한 방법 및 컴퓨팅 장치

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US403326A (en) * 1889-05-14 Thomas j
DE572870C (de) * 1926-02-10 1933-03-24 William E Moore Verfahren zur Behandlung von Eisen, das im geschmolzenen Zustand durch eine Schicht gluehenden Materials hindurchtropft
US3200232A (en) * 1963-06-11 1965-08-10 Soudure Electr Autogene Sa Process and apparatus for electric fusion welding
AT280505B (de) * 1967-12-27 1970-04-10 Boehler & Co Ag Geb Elektrodenhalter in Anlagen zum Elektroumschmelzen von Metallen, insbesondere von Stählen
US3677323A (en) * 1968-11-22 1972-07-18 Rheinstahl Huettenwerke Ag Process and apparatus for providing steel ingot
SU403326A1 (ru) * 1971-01-04 1980-05-25 Институт электросварки им. Е.О.Патона Устройство дл электрошлаковой выплавки слитков
DE2319983B2 (de) * 1973-04-19 1975-11-06 Institut Elektroswarki Imeni E.O. Patona Akademii Nauk, Ukrainskoj Ssr, Kiew (Sowjetunion) Verfahren zur Herstellung metallischer Ringteile nach dem Elektroschlacke-Umschmelzverfahren
JPS5039601B2 (fr) * 1973-05-11 1975-12-18
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GB1469850A (en) * 1974-12-30 1977-04-06 Inst Elektroswarki Patona Machine for electroslag refining and production of curved ingots
JPS53130231A (en) * 1977-04-21 1978-11-14 Mitsubishi Heavy Ind Ltd Manufacturing apparatus for curved tube with straight tube portion by continuous electroslag melting
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JPS6442531A (en) * 1987-08-07 1989-02-14 Nippon Kokan Kk Arc melting apparatus
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Also Published As

Publication number Publication date
RU2689832C1 (ru) 2019-05-29
EP3328576A1 (fr) 2018-06-06
CN108136493A (zh) 2018-06-08
JP2018522739A (ja) 2018-08-16
US20180207719A1 (en) 2018-07-26
WO2017016549A1 (fr) 2017-02-02
SI3328576T1 (sl) 2019-11-29
DE102015117661A1 (de) 2017-02-02

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