EP2364797A2 - Procédé et installation destinés à la fabrication de lingots de refusion creux - Google Patents

Procédé et installation destinés à la fabrication de lingots de refusion creux Download PDF

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Publication number
EP2364797A2
EP2364797A2 EP11000727A EP11000727A EP2364797A2 EP 2364797 A2 EP2364797 A2 EP 2364797A2 EP 11000727 A EP11000727 A EP 11000727A EP 11000727 A EP11000727 A EP 11000727A EP 2364797 A2 EP2364797 A2 EP 2364797A2
Authority
EP
European Patent Office
Prior art keywords
mold
mandrel
melt
abschmelzelektroden
pole
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.)
Withdrawn
Application number
EP11000727A
Other languages
German (de)
English (en)
Inventor
Harald Dipl.-Ing. Dr. mont. Holzgruber
Bertram Dipl.-Ing. Ofner
Michael Dipl.-Ing. Breitler
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 special melting technologies GmbH
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
Publication of EP2364797A2 publication Critical patent/EP2364797A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
    • 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

Definitions

  • Hollow castings or ingots are needed for a variety of applications, particularly for the manufacture of mechanical parts in the industry.
  • the dripping down liquid metal is collected in the annular gap and solidifies there continuously to a hollow block.
  • This method it is possible to produce hollow blocks of satisfactory quality.
  • the cost of producing and preparing the long, thin rod-shaped Abschmelzelektroden is high, and also their concentric arrangement in the annular gap, in particular in the production of hollow blocks with low wall thickness associated with considerable difficulties.
  • funnel-shaped, so-called T-shaped molds are used in the area of the slag bath, because then, compared to the wall thickness of the hollow block, thicker melt-off electrodes can be used.
  • a mandrel concentrically arranged in the water-cooled mold is moved upward in which the block is built up on the bottom plate, the top end of the mandrel always up in the slag bath, but always remains completely covered by this.
  • the metal which is consumed by the ablation electrodes drips onto the curved surface of the mandrel and runs from there into the annular gap between the mold wall and the mandrel, so that a hollow block is again formed.
  • a method is known in which a per se known current-conducting mold is used with a current-conducting mandrel.
  • the melt stream is then fed, for example, to the slag bath via the mold and discharged therefrom via the mandrel.
  • a live electrode is not needed.
  • the metal supply can be in the form of liquid metal but also in the form of solid metal, both granules, chips, but also rods in question, but remain de-energized. This ensures that the temperature of the slag bath, regardless of the supply rate of the liquid or solid metal, can be controlled.
  • the inventive method is therefore a method for producing hollow castings by melting self-consumable electrodes in a slag bath in a short, water-cooled mold and using a likewise water-cooled mandrel inserted from above into the mold using at least two Abschmelzelektroden whose diameter in each case at least 1.0 times the annular gap between the outer diameter of the hollow block forming mold wall and the diameter of the mandrel is, wherein the Abschmelzelektroden are melted in a in the region of the Abschmelzelektroden for receiving the slag bath in particular T-shaped expanded mold, and wherein the level of the metal mirror below the extension is adjusted and maintained.
  • the control and regulation of the metal mirror can be achieved by various measures. It is advantageous if the position of the metal mirror is determined by radioactive ⁇ -rays, which are introduced from outside the mold in a position corresponding to the level of the metal mirror, and which are received by a mounted in the interior of the water-cooled mandrel at the same level receiver. This makes it possible, in cooperation with a suitable control of the withdrawal movement of resting on a bottom plate block to keep the level of the metal mirror in the mold constant.
  • the melt stream is distributed from one pole of a single-phase current source to the at least two Abschmelzelektroden and passed through the slag bath and the bottom plate to the second pole of the power source.
  • a water-cooled mold 10 with a preferably in longitudinal section (see Fig. 2 ) T-shaped extension 11 in the region of two Abschmelzelektroden 12 shown, which are melted in a slag bath 13, wherein the molten metal collects in a melt sump 14 and after solidification in a gap 15 between the mold 10 and a likewise water-cooled mandrel 17 to a remelting block or cast body, referred to below as a hollow block 18, which is pulled downwards out of the mold 10 by a suitable device, not shown here, through which a bottom plate 19 is moved.
  • the mandrel 17 is held in position by a retaining plate 21.
  • a ⁇ -ray receiver 22 arranged in the mandrel 17 and a ⁇ -ray source 23 located outside the mold 10 can be seen.
  • An electromagnetic stirring coil 24 can optionally be arranged in the area of the melt pool 14.
  • a system 100 suitable for carrying out the method at least two melting electrodes 12 are arranged according to the invention, which are held and moved by corresponding support elements, not shown here, via which the melt stream is also fed, and by means of which they are introduced into the slag bath 13 be tracked as they melt off.
  • Fig.1 1 and Fig. 2 It can be seen that the mold 10 containing the slag bath 13 expands in the form of a T-shape in the region of the melting electrodes 12, around the melting electrodes 12, which have a diameter D which corresponds to at least 1.0 times the gap width s of the gap 15.
  • the gap width s is determined by the mold surface 25 forming the outer surface of the hollow block 18 and the diameter of the mandrel 17, wherein the mandrel 17, viewed from above in the downward direction, that is viewed in the direction of the bottom plate 19, tapers conically.
  • the conicity of the mandrel 17 is at least 1.5%, based on the mandrel diameter and based on the length of the mandrel 17 in the solidification zone of the metal in the mold 10th
  • the ⁇ -radiation source 23, as well as inside the water-cooled mandrel 17 of the ⁇ -ray receiver 22 for continuous control of the level of the metal mirror 27 is attached outside the mold 10 at a position below the T-shaped extension 11 in the desired position of the metal mirror.
  • the ⁇ -radiation source 23 as well as inside the water-cooled mandrel 17 of the ⁇ -ray receiver 22 for continuous control of the level of the metal mirror 27 is attached.
  • the ⁇ -radiation source 23 as well as inside the water-cooled mandrel 17 of the ⁇ -ray receiver 22 for continuous control of the level of the metal mirror 27 is attached.
  • the ⁇ -radiation source 23 as well as inside the water-cooled mandrel 17 of the ⁇ -ray receiver 22 for continuous control of the level of the metal mirror 27 is attached.
  • the supply and return of the melt stream to the Abschmelzelektroden 12 may be arranged in different ways.
  • one pole of a single-phase current source is connected in parallel with both ablation electrodes 12, while the other pole is connected to the bottom plate 19 on which the hollow block 18 rests.
  • the second pole is connected to the mold 10 and / or the mandrel 17.
  • one of the at least two melting electrodes 12 is connected to one pole each of the melt current source.
  • the electromagnetic stirring coil 24 is arranged so that in the sump 14, a rotational movement of the slag bath 13 about the (longitudinal) axis of the hollow block 18 can be effected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Continuous Casting (AREA)
EP11000727A 2010-03-02 2011-01-31 Procédé et installation destinés à la fabrication de lingots de refusion creux Withdrawn EP2364797A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0031710A AT509495B1 (de) 2010-03-02 2010-03-02 Verfahren und anlage zur herstellung hohler umschmelzblöcke

Publications (1)

Publication Number Publication Date
EP2364797A2 true EP2364797A2 (fr) 2011-09-14

Family

ID=44080291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11000727A Withdrawn EP2364797A2 (fr) 2010-03-02 2011-01-31 Procédé et installation destinés à la fabrication de lingots de refusion creux

Country Status (5)

Country Link
US (1) US20110214830A1 (fr)
EP (1) EP2364797A2 (fr)
JP (1) JP2011177792A (fr)
CN (1) CN102189246A (fr)
AT (1) AT509495B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103691913B (zh) * 2013-12-30 2016-04-13 攀钢集团江油长城特殊钢有限公司 1Mn18Cr18N空心钢锭的制造方法
CN104164574B (zh) * 2014-08-13 2016-04-20 东北大学 一种电渣重熔制备大型发电机护环用空心钢锭的方法
CN105903869B (zh) * 2016-04-13 2017-11-14 饶云福 一种护环短流程制造工艺
CN106801146B (zh) * 2016-12-29 2019-03-22 东北大学 一种电渣重熔制备镍基高温合金空心钢锭的方法
WO2019070699A1 (fr) * 2017-10-05 2019-04-11 Lam Research Corporation Systèmes de coulée électromagnétique comprenant des fours et des moules pour produire des tubes de silicium
CN108580820A (zh) * 2018-06-19 2018-09-28 沈阳麒飞新型材料科技有限公司 一种薄壁环形坯设备
CN112501448B (zh) * 2020-11-11 2022-05-03 湖南金天钛业科技有限公司 真空自耗熔炼合金的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2303629B2 (de) 1972-01-28 1975-03-06 Mitsubishi Jukogyo K.K., Tokio Verwendung des ESU-Verfahrens zur Regeneration eines in seiner Qualität verschlechterten Metallrohrs
AT409729B (de) 2000-02-16 2002-10-25 Inteco Int Techn Beratung Verfahren und anordnung zur herstellung von hohlen gusskörpern aus metallen

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
GB1177387A (en) * 1967-04-19 1970-01-14 Ass Elect Ind Improvements relating to Ingot Production by an Electroslag Process
AT282846B (de) * 1968-02-12 1970-07-10 Boehler & Co Ag Geb Vorrichtung zur Herstellung hohler, aus Metallen, insbesondere aus Stählen bestehender Blöcke nach dem Elektroschlackenumschmelzverfahren
DE1952010C3 (de) * 1969-10-15 1973-10-18 Wsesojusnij Nautschno-Issledowatelskij Institut Elektrotermitscheskowo Oborudowanija, Moskau Anlage zum Elektroschlacke Gießen hohler Metallblocke
GB1332604A (en) * 1971-04-02 1973-10-03 Inst Elektroswarki Patona Method for producing metal hollow ingots by electroslag remelting and a device for performing this method
US3687188A (en) * 1971-04-06 1972-08-29 Inst Elektrosvarki Ineni E O P Method and device for producing metal hollow ingots by electroslag remelting
BE794346A (fr) * 1972-02-04 1973-05-16 Mitsubishi Heavy Ind Ltd Procede et appareil pour la fabrication de corps tubulaires
BE804150A (fr) * 1973-08-29 1974-02-28 Inst Elektroswarki Patona Dispositif pour l'elaboration d'un lingot creux par refusion sous laitier electroconducteur
GB1509307A (en) * 1975-08-01 1978-05-04 Inst Elektroswarki Patona Apparatus for electroslag remelting of consumable electrodes and casting of hollow metal ingots
US4290474A (en) * 1979-06-12 1981-09-22 Medovar Boris I Method and apparatus for electroslag casting of metals
JPS577356A (en) * 1980-06-18 1982-01-14 Hitachi Ltd Production of composite cast ingot by electroslag refining
FR2519567A1 (fr) * 1982-01-13 1983-07-18 Vallourec Procede de fabrication de corps creux par coulee continue a l'aide d'un champ magnetique et dispositif de mise en oeuvre du procede
CN1059365C (zh) * 1995-12-12 2000-12-13 冶金工业部钢铁研究总院 一种复合轧辊的制造方法
CN1818102A (zh) * 2006-03-07 2006-08-16 东北大学 连铸式电渣炉
CN101480715A (zh) * 2009-01-21 2009-07-15 东北大学 一种带有外加电磁搅拌的电渣熔铸装置及方法
CN102421549B (zh) * 2009-03-27 2014-07-16 钛金属公司 用于半连续铸造中空锭块的方法和装置及由此所得的产品

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2303629B2 (de) 1972-01-28 1975-03-06 Mitsubishi Jukogyo K.K., Tokio Verwendung des ESU-Verfahrens zur Regeneration eines in seiner Qualität verschlechterten Metallrohrs
AT409729B (de) 2000-02-16 2002-10-25 Inteco Int Techn Beratung Verfahren und anordnung zur herstellung von hohlen gusskörpern aus metallen

Also Published As

Publication number Publication date
US20110214830A1 (en) 2011-09-08
JP2011177792A (ja) 2011-09-15
CN102189246A (zh) 2011-09-21
AT509495B1 (de) 2012-01-15
AT509495A1 (de) 2011-09-15

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