EP1925681A2 - Procédé de refonte sous laitier de métaux, tout comme coquille correspondante - Google Patents

Procédé de refonte sous laitier de métaux, tout comme coquille correspondante Download PDF

Info

Publication number: EP1925681A2
Authority: EP; European Patent Office
Prior art keywords: mold; cooled; water; remelting; block
Prior art date: 2006-11-15
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.): Granted

Application number

EP07021759A

Other languages

German (de)

English (en)

Other versions

EP1925681A3 (fr

EP1925681B1 (fr

Inventor

Wolfgang Holzgruber

Harald 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 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.)

2006-11-15

Filing date

2007-11-09

Publication date

2008-05-28

2006-11-15 Priority claimed from AT18842006A external-priority patent/AT504574B1/de

2007-11-09 Application filed by Inteco special melting technologies GmbH filed Critical Inteco special melting technologies GmbH

2008-05-28 Publication of EP1925681A2 publication Critical patent/EP1925681A2/fr

2009-03-11 Publication of EP1925681A3 publication Critical patent/EP1925681A3/fr

2011-04-27 Application granted granted Critical

2011-04-27 Publication of EP1925681B1 publication Critical patent/EP1925681B1/fr

Status Not-in-force legal-status Critical Current

2027-11-09 Anticipated expiration legal-status Critical

Links

239000002893 slag Substances 0.000 title claims abstract description 33
229910052751 metal Inorganic materials 0.000 title claims abstract description 27
239000002184 metal Substances 0.000 title claims abstract description 27
238000000034 method Methods 0.000 title claims abstract description 16
150000002739 metals Chemical class 0.000 title claims abstract description 5
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
238000010276 construction Methods 0.000 claims abstract description 3
230000033001 locomotion Effects 0.000 claims description 17
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
238000005266 casting Methods 0.000 claims description 7
230000017525 heat dissipation Effects 0.000 claims description 6
238000004519 manufacturing process Methods 0.000 claims description 5
239000000463 material Substances 0.000 claims description 5
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
239000000919 ceramic Substances 0.000 claims description 4
229910010293 ceramic material Inorganic materials 0.000 claims description 4
229910002804 graphite Inorganic materials 0.000 claims description 4
239000010439 graphite Substances 0.000 claims description 4
239000003870 refractory metal Substances 0.000 claims description 4
229910045601 alloy Inorganic materials 0.000 claims description 3
239000000956 alloy Substances 0.000 claims description 3
229910052742 iron Inorganic materials 0.000 claims description 3
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
239000000835 fiber Substances 0.000 claims description 2
239000008187 granular material Substances 0.000 claims description 2
229910052750 molybdenum Inorganic materials 0.000 claims description 2
239000011733 molybdenum Substances 0.000 claims description 2
239000011214 refractory ceramic Substances 0.000 claims description 2
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
229910052721 tungsten Inorganic materials 0.000 claims description 2
239000010937 tungsten Substances 0.000 claims description 2
230000010355 oscillation Effects 0.000 claims 1
239000011819 refractory material Substances 0.000 claims 1
210000002268 wool Anatomy 0.000 claims 1
229910000640 Fe alloy Inorganic materials 0.000 abstract 1
229910000990 Ni alloy Inorganic materials 0.000 abstract 1
238000007670 refining Methods 0.000 abstract 1
238000002844 melting Methods 0.000 description 10
230000008018 melting Effects 0.000 description 10
238000007711 solidification Methods 0.000 description 7
230000008023 solidification Effects 0.000 description 7
238000009413 insulation Methods 0.000 description 6
238000005265 energy consumption Methods 0.000 description 5
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
238000009749 continuous casting Methods 0.000 description 3
239000007788 liquid Substances 0.000 description 3
229910001338 liquidmetal Inorganic materials 0.000 description 3
229910052582 BN Inorganic materials 0.000 description 2
PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
229910004261 CaF 2 Inorganic materials 0.000 description 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
238000001816 cooling Methods 0.000 description 2
239000000498 cooling water Substances 0.000 description 2
229910052802 copper Inorganic materials 0.000 description 2
239000010949 copper Substances 0.000 description 2
238000010891 electric arc Methods 0.000 description 2
230000006698 induction Effects 0.000 description 2
239000000155 melt Substances 0.000 description 2
229910052759 nickel Inorganic materials 0.000 description 2
238000013021 overheating Methods 0.000 description 2
230000007704 transition Effects 0.000 description 2
229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000011449 brick Substances 0.000 description 1
ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
230000018109 developmental process Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000010309 melting process Methods 0.000 description 1
230000005499 meniscus Effects 0.000 description 1
239000000203 mixture Substances 0.000 description 1
229910052573 porcelain Inorganic materials 0.000 description 1
230000000284 resting effect Effects 0.000 description 1
230000035939 shock Effects 0.000 description 1

Images

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

Definitions

the invention relates to a process for the electroslag remelting of metals, in particular of iron and nickel-based alloys for the production of remelting blocks from one or more Abschmelzelektroden in a short, water-cooled Gleitkokille according to the preamble of claim 1.
the invention covers a comparison with the prior art improved mold for performing this method.
the length of the mold corresponds to the length of the block to be produced.
the mold is here in the course of the remelting process by melting the self-consuming Electrode in the slag bath floating on the metal mirror successively filled with remelted metal, whereby there is no relative movement between mold - respectively mold wall - and Umschmelzblock.
Umschmelzblöcke be produced whose length exceeds the length of the mold by a multiple.
the short, water-cooled mold serves as a melting and casting mold, in which the hot slag bath is located and in which the metal melting off from the electrode is collected and subsequently solidified into the remelting block.
the mold is therefore required to carry out the remelting process only in the area of the slag bath and in the area of block solidification. Once the remelt block has solidified, the mold no longer fulfills any purpose.
the consumption of electric melting energy in electroslag remelting is relatively high in comparison with other melting processes which also operate with electrical energy, such as scrap melting in an electric arc furnace or an induction crucible furnace, since the melting rate is controlled primarily during electroslag remelting. to ensure a perfect solidification structure of the remelting blocks.
An energy saving by increasing the Abschmelzrate is therefore not possible, the direct contact of serving as a heat source, through the passage of current highly heated slag bath with the water-cooled mold wall still has a significant additional negative impact.
the object of the present invention is to use, on the one hand, the economic advantage of thermal insulation in the area of the slag bath in the case of electroslag remelting, while avoiding the problems described above, so that a technical application is possible in a meaningful manner.
the solution of this problem using a known short, two-part Gleitkokille whose lower, the casting cross-section forming part in the usual manner water cooled and the upper part against heat dissipation is completely or partially isolated, achieved in that except in the start-up phase during the regular block structure of the metal mirror by a corresponding control of the relative movement between the mold and remelt always in the lower, water-cooled part of the mold - that is below the dividing line between water-cooled and insulated part of the same - held that the distance between the surface of the metal mirror on the one hand and the through the dividing line 5 mm, but not more than 100 mm, and that the slag bath floating on the metal mirror is at least 75% of its height in the region of the insulated part.
the relative movement can be either stepwise or continuously in a conventional manner; in a stepwise motion, the movement step followed by a pause should be at least twice the block building speed.
a step in the opposite direction whose step length amounts to a maximum of 30% of the length of the original movement step, can be connected to each such movement step.
a possible continuous withdrawal movement can also be superimposed on an oscillating movement.
a lower base part of a sliding mold as a multi-part mold unit 10 represents a water-cooled solidification or casting mold 12, the inner wall preferably consists of an insert 14 made of copper; this is installed in a water jacket or water tank not separately shown in the drawing.
the insert 14 metal dripping off in the mold longitudinal axis A is collected in a metal sump 4 and solidified into a remelt block 6.
the metal mirror 5 of the metal sump 4 is superimposed by a slag bath 8.
the remelting block 6 is withdrawn from the casting mold 12 by a lowerable base plate 16, which is only indicated here, in such a way that the metal mirror 5 always remains below an upper, water-cooled flange surface 18 of the casting mold 12; above which there is an upper mold part 20, which is constructed in several parts and a water-cooled support structure 22 in the form of a tubular ring rectangular cross section and a likewise annular insert 24 includes.
a refractory metal - such as tungsten or molybdenum - existing inner layer 26 is in contact with the slag bath 8 of height h.
the inner layer 26 rectangular radial section has an inner diameter which corresponds approximately to the inner diameter d of the mold 12.
an intermediate layer 28 is also arranged rectangular radial section, which takes over the function of thermal insulation.
This intermediate layer 28 is preferably made of a heat-resistant, refractory, ceramic material resistant to thermal shock, for example, a high-temperature resistant ceramic fiber mat, refractory bricks or other ceramic high-temperature resistant material such as ramming masses or granules.
the support structure 22 of the upper, heat-insulating Kokillenteils 20 may also be formed as an extension of the water jacket of the lower mold part 12, in which then the inner layer 26 and the intermediate layer 28 are installed.
the upper die part consisting of the support structure 22, the inner layer 26 and the intermediate layer 28 can be held down by a rectangular radial section which is also water-cooled cover ring 30 here in the form of a tubular ring, for which purpose the cover ring 30 does not pass through here shown elements with the water jacket of the lower, water-cooled mold part 12 can be clamped together.
the mold unit 10 can - as shown here - standing in contact with the slag 8 insert 24 of the upper Kokillenteils 20 via a corresponding high-current line 32 with a return line 34 of the melt stream to the melt power supply 35 connected, so that the Insert 24 at the same potential as the bottom plate 16 is located.

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)
Furnace Details (AREA)

EP07021759A 2006-11-15 2007-11-09 Procédé de refonte de métaux sous laitier électroconducteur et lingotière à cet effet Not-in-force EP1925681B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT18842006A AT504574B1 (de)	2006-11-15	2006-11-15	Verfahren zum elektroschlacke umschmelzen von metallen
DE200610062460 DE102006062460A1 (de)	2006-11-15	2006-12-28	Verfahren zum Elektroschlacke-Umschmelzen von Metallen sowie Kokille dafür

Publications (3)

Publication Number	Publication Date
EP1925681A2 true EP1925681A2 (fr)	2008-05-28
EP1925681A3 EP1925681A3 (fr)	2009-03-11
EP1925681B1 EP1925681B1 (fr)	2011-04-27

Family

ID=39060225

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP07021759A Not-in-force EP1925681B1 (fr)	2006-11-15	2007-11-09	Procédé de refonte de métaux sous laitier électroconducteur et lingotière à cet effet

Country Status (2)

Country	Link
US (1)	US7849912B2 (fr)
EP (1)	EP1925681B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2386366A3 (fr) *	2010-05-14	2012-10-10	Inteco special melting technologies GmbH	Procédé et dispositif d'établissement continu du niveau de scories dans des installations de refusion par laitier électrique à l'aide de lingotières courtes
WO2013117529A1 (fr) *	2012-02-07	2013-08-15	Inteco Special Melting Technologies Gmbh	Installation de refusion d'une électrode consommable en un lingot lors de la production de métal
CN104330411A (zh) *	2014-11-10	2015-02-04	东北大学	一种动态观测模拟电渣重熔过程熔滴行为的装置及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP5669509B2 (ja) *	2010-07-16	2015-02-12	高橋謙三	攪拌装置付き連続鋳造用鋳型装置
CN112792323B (zh) *	2020-12-21	2022-06-28	河钢股份有限公司	一种镍基材料的电渣重熔补缩工艺
WO2023142422A1 (fr) *	2022-01-28	2023-08-03	苏州大学	Dispositif de refusion sous laitier électroconducteur d'un cristalliseur refroidi à l'eau du type à entrée unique et à sorties multiples et procédé de refusion sous laitier électroconducteur
CN120619308B (zh) *	2025-08-12	2025-10-28	太原科技大学	一种逐层凝固制备大型铸锭的装置及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1817124A1 (de)	1968-01-09	1969-08-14	Ver Edelstahlwerke Ag	Verfahren und Vorrichtung zum Kuehlen von durch Elektroschlackenumschmelzen gebildeten Metallschmelzen,insbesondere von Stahlschmelzen
AT406239B (de)	1996-04-09	2000-03-27	Inteco Int Techn Beratung	Wassergekühlte kokille für das stranggiessen oder elektroschlacke-umschmelzen
WO2002040726A1 (fr)	2000-11-14	2002-05-23	Inteco Internationale Technische Beratung Ges.M.B.H.	Procede et dispositif de fabrication de lingots ou de barres metalliques par separation par fusion d'electrodes dans un bain de scories a fusion electrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT297959B (de)	1968-06-28	1972-04-25	Boehler & Co Ag Geb	Verfahren zum Elektroschlackeumschmelzen von Metallen und Legierungen
SU520785A1 (ru) *	1974-11-28	1977-10-25	Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им. Е.О.Патона	Печь электрошлакового переплава
DE19614182C1 (de)	1996-04-11	1997-07-31	Inteco Int Techn Beratung	Wassergekühlte Kokille zum Herstellen von Blöcken oder Strängen sowie deren Verwendung
AT409233B (de) *	2000-02-07	2002-06-25	Inteco Int Techn Beratung	Verfahren und anordnung zum herstellen von gusskörpern aus metallen
AT410412B (de) *	2000-11-10	2003-04-25	Inteco Int Techn Beratung	Verfahren zum elektroschlacke umschmelzen von metallen

2007
- 2007-11-09 EP EP07021759A patent/EP1925681B1/fr not_active Not-in-force
- 2007-11-14 US US11/939,569 patent/US7849912B2/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1817124A1 (de)	1968-01-09	1969-08-14	Ver Edelstahlwerke Ag	Verfahren und Vorrichtung zum Kuehlen von durch Elektroschlackenumschmelzen gebildeten Metallschmelzen,insbesondere von Stahlschmelzen
AT287215B (de)	1968-01-09	1971-01-11	Boehler & Co Ag Geb	Verfahren und Vorrichtung zum Elektroschlackenumschmelzen von Metallen, insbesondere von Stählen
AT406239B (de)	1996-04-09	2000-03-27	Inteco Int Techn Beratung	Wassergekühlte kokille für das stranggiessen oder elektroschlacke-umschmelzen
WO2002040726A1 (fr)	2000-11-14	2002-05-23	Inteco Internationale Technische Beratung Ges.M.B.H.	Procede et dispositif de fabrication de lingots ou de barres metalliques par separation par fusion d'electrodes dans un bain de scories a fusion electrique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2386366A3 (fr) *	2010-05-14	2012-10-10	Inteco special melting technologies GmbH	Procédé et dispositif d'établissement continu du niveau de scories dans des installations de refusion par laitier électrique à l'aide de lingotières courtes
WO2013117529A1 (fr) *	2012-02-07	2013-08-15	Inteco Special Melting Technologies Gmbh	Installation de refusion d'une électrode consommable en un lingot lors de la production de métal
CN104330411A (zh) *	2014-11-10	2015-02-04	东北大学	一种动态观测模拟电渣重熔过程熔滴行为的装置及方法
CN104330411B (zh) *	2014-11-10	2017-05-10	东北大学	一种动态观测模拟电渣重熔过程熔滴行为的装置及方法

Also Published As

Publication number	Publication date
EP1925681A3 (fr)	2009-03-11
US20080115909A1 (en)	2008-05-22
US7849912B2 (en)	2010-12-14
EP1925681B1 (fr)	2011-04-27

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Publication	Publication Date	Title
EP1925681B1 (fr)	2011-04-27	Procédé de refonte de métaux sous laitier électroconducteur et lingotière à cet effet
DE69931141T2 (de)	2007-02-08	Schmelzverfahren in einer Induktion-Kalt-Schmelz-Tiegelanlage
DE102004063817A1 (de)	2005-07-28	Vorrichtung zur Erzeugung oder Reinigung von Metallen und damit verbundene Prozesse
EP3089838A2 (fr)	2016-11-09	Procédé et installation de production de lingots de grande longueur et de forte section
EP1444065B1 (fr)	2008-01-09	Procede de production d'alliages intermetalliques (ingots)
DE60024142T2 (de)	2006-07-20	Giesssystem und giessverfahren für hochreinen und feinkörnigen metallguss
DE2621380A1 (de)	1976-11-25	Primaerelektrodenanordnung fuer hochtemperatur-schmelzoefen
EP0786531B1 (fr)	2000-07-19	Procédé et dispositif pour la refusion de métaux sous forme de barres
CH661673A5 (de)	1987-08-14	Stranggiessverfahren fuer metalle und vorrichtung zu dessen durchfuehrung.
EP0800879B1 (fr)	2002-03-13	Lingotière refroidie pour la fabrication de lingots, procédé de coulée continue ainsi que procédé pour la refonte sous laitier électroconducteur
AT409233B (de)	2002-06-25	Verfahren und anordnung zum herstellen von gusskörpern aus metallen
DE1005886B (de)	1957-04-04	Vorrichtung und Verfahren zur kontinuierlichen Herstellung von Fasern aus feuerfestem geschmolzenem Material
DE2655602C2 (de)	1982-12-02	Verfahren und Vorrichtung zur Herstellung von Blöcken
AT504574B1 (de)	2009-08-15	Verfahren zum elektroschlacke umschmelzen von metallen
DE1483646A1 (de)	1969-09-25	Verfahren und Vorrichtung zum Herstellen von Gussbloecken,vorzugsweise Stahlbloecken
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