WO2003047792A1 - Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche - Google Patents

Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche Download PDF

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Publication number
WO2003047792A1
WO2003047792A1 PCT/DE2002/004407 DE0204407W WO03047792A1 WO 2003047792 A1 WO2003047792 A1 WO 2003047792A1 DE 0204407 W DE0204407 W DE 0204407W WO 03047792 A1 WO03047792 A1 WO 03047792A1
Authority
WO
WIPO (PCT)
Prior art keywords
vessel
casting vessel
casting
slots
heating
Prior art date
Application number
PCT/DE2002/004407
Other languages
German (de)
English (en)
Other versions
WO2003047792A8 (fr
Inventor
Günter PHILLIPPS
Ralph Koppenhöfer
Carmen Scherer
Original Assignee
INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG
Daimlerchrysler Ag
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 INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG, Daimlerchrysler Ag filed Critical INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG
Priority to EP02794964A priority Critical patent/EP1450974B8/fr
Priority to AT02794964T priority patent/ATE297825T1/de
Priority to AU2002360884A priority patent/AU2002360884A1/en
Priority to DE50203641T priority patent/DE50203641D1/de
Publication of WO2003047792A1 publication Critical patent/WO2003047792A1/fr
Publication of WO2003047792A8 publication Critical patent/WO2003047792A8/fr

Links

Classifications

    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • H05B6/24—Crucible furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
    • B22D41/01—Heating means
    • B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/0843—Lining or casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/0862—Flux guides

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the metals In order to bring a metal or a metal alloy into a castable state, the metals first have to be melted, then optionally subjected to a metallurgical intermediate treatment and finally to the casting process itself.
  • the metallic raw materials are mostly melted in a large-volume melting furnace, from where the melts are transferred to a pan and from there to a casting plant.
  • many metals or metal alloys are sensitive to temperature fluctuations, and tend to be exposed to oxygen and hydrogen or other substances passing through the air or through contact with the vessels used, e.g. Iron to enter into unwanted reactions that lead to unwanted accompanying substances in the melt.
  • Z.T. form dross, also via undesired chemical reactions at the respective molten metal level. Many of the above-mentioned reactions are promoted by decanting the metal melt one or more times.
  • Negative effects also occur if the aluminum melt with moisture, e.g. B. moist air comes into contact. Due to the high temperatures, the water splits into its components hydrogen and oxygen, whereby dissolved hydrogen in the melt separates again in the form of enclosed gas bubbles during the solidification process; the pores formed by hydrogen separation interrupt the structure in the casting.
  • moisture e.g. B. moist air comes into contact. Due to the high temperatures, the water splits into its components hydrogen and oxygen, whereby dissolved hydrogen in the melt separates again in the form of enclosed gas bubbles during the solidification process; the pores formed by hydrogen separation interrupt the structure in the casting.
  • induction conveying troughs which transfer the liquid aluminum or aluminum alloy from a melting furnace into a tiltable treatment and casting furnace.
  • induction conveying troughs By induction of an alternating magnetic field in the liquid metal, eddy currents are generated, which in interaction can exert a mechanical force on the metal that moves the metal.
  • the induced eddy currents also heat the liquid metal, so that temperature losses can be compensated for.
  • induction crucible furnaces in which both a melt bath movement is achieved by means of the existing magnetic coil generated as well as keeping warm is guaranteed.
  • the inner wall it is necessary for the inner wall to consist of non-magnetic, electrically non-conductive, refractory material, so that the magnetic fields are not impaired and the heat development occurs directly in the melting material.
  • Induction troughs for conveying molten metal between two metallurgical vessels are, however, constructional and costly. In addition, these channels require space and do not allow any flexibility.
  • the transport vessels that are still used in foundry technology have the disadvantage that, due to the lack of their own heating system, a not inconsiderable temperature loss of the melt during transport has to be accepted.
  • it would be possible to provide the transport containers with an inductively operating heater but this has the disadvantage that the power supply line, including the cooling devices for the coil, must then be carried along.
  • a heating device installed in the lower region of a transport vessel would considerably increase the weight and volume of this transport vessel and thus make it considerably more difficult to handle.
  • a device for keeping metallic melts warm in a ladle which is lined with refractory material and which has a fixed, designed as an independent structural unit, an electro-inductive heating device and a portable ladle which can be inserted therein, the jacket of which is entirely or at least in the area of action of the heating device made of electrically non-conductive material.
  • the shell of the ladle can consist entirely or at least in the area of the action of the heating device made of a plastic, preferably reinforced by inserts such as glass fibers, or of longitudinally laminated sheets, between each of which a plastic insulating layer is provided.
  • this vessel can be used both as a transport vessel and as a holding, alloying and / or degassing vessel and possibly also as a casting vessel, from which the desired batches are removed using a ladle.
  • the molten metal transferred from a melting vessel into the casting vessel is transferred to a heating station, where the casting vessel is placed or used and the melt is inductively heated and a bath movement is generated.
  • post-treatments such as degassing, grain refinement or even alloy settings can be carried out before the casting vessel is removed from the heating stand and led to the casting plant, which can be a rotary table system for permanent mold casting or a continuous casting plant.
  • the pouring vessels preferably have a filling volume of 1 to 3 tons.
  • the vessel structure is basically known from ladle metallurgy, ie the vessels have a refractory lining and an outer metal jacket, which, however, must not be ferromagnetic in the lower area in order not to impair the desired magnetic field structure and the generation of eddy currents in the melt.
  • the metal jacket has slot-shaped openings in the lower region, which are located at the level of the magnetic coil when the casting vessel is attached.
  • the slots mentioned prevent a large-scale generation of eddy currents in a structurally simple manner, which could lead to overheating and damage to the ladle.
  • the length of the slots is preferably between 120% and 150% of the length of the magnetic coil, ie the slots protrude above and below the magnetic coil in the axial direction.
  • the number of slots, which are preferably arranged equidistantly in the vessel jacket, is essentially determined by the casting vessel diameter. With the filling volumes specified above, there should be 4, 6, 8 or more slots in the metal jacket.
  • the magnetic coil is preferably surrounded by an iron core (yoke).
  • the position of the slots in the casting vessel jacket is approximately congruent in height with the position of the yokes.
  • the width of the slots is between 2 mm and 10 mm. Such a slot width on the one hand effectively prevents the formation of large eddy currents, on the other hand the slot width is so small that the stability of the casting vessel is not impaired.
  • the heating station has a magnetic coil, which preferably contains at least two windings and which is surrounded by an iron core (yokes).
  • the multiple winding of the magnetic coil creates the advantage that the height of the heating stand can be minimized, e.g. to 150 to 300 mm, since the multilayer of the winding enables a correspondingly higher desired performance to be achieved.
  • the magnetic coil and the yokes are preferably arranged in a frame, which then form the heating station.
  • the heating position is adjustable in height, which has the advantage that the vessel placed and centered on existing supports or a frame is then coupled to the heating position by the heating position being raised around the lower area or before the further transport of the Vessel is lowered.
  • the heating station preferably consists of an annular base in which the magnet coil is integrated.
  • the vessel shows its lower area has an outer shape which is adapted to the inner jacket of the annular base, ie that when the vessel is placed or inserted, an air gap which is adapted to the dimensions remains between the magnet coil and the vessel jacket.
  • a frame is used as a support or supports are provided which have a support surface adapted to the vessel.
  • the transition region of the vessel from the lower part into the upper part with a larger cross section can, according to an alternative embodiment, be designed as a collar-shaped contact surface corresponding to the roof surface of the annular base.
  • This type of training is designed for fixed, not height-adjustable heating stations.
  • the vessel described above is used as a transport, holding, alloying, degassing and / or casting vessel for molten metals, in particular made of aluminum or aluminum alloys, preferably in such a way that the casting vessel is used on a rotary table system with several working positions or linear system for permanent mold casting is used.
  • Fig. 1 shows a cross section through a casting vessel, which is coupled to a heating station and
  • FIG. 2 shows a further partially sectioned view of the casting vessel according to FIG. 1.
  • the vessel 1 shown is placed on a heating stand 2.
  • the vessel 1 has an upper region with a diameter Di of 1100 mm, an intermediate area rich, in which the diameter tapers and a lower area with a diameter D 2 of 500 mm, which is adapted to the geometry of the ladle used.
  • the dimensions result in a filling capacity of approx. 2 to (2000 kg) aluminum.
  • the vessel 1 has an insulating refractory lining and an outer metal jacket.
  • the metal jacket 4 in the lower area consists of a non-ferromagnetic material, for example VA steel.
  • a double-layer magnetic coil 5 is arranged at a distance from an air gap 6 and is enclosed by an iron core (yokes 7).
  • the coil 5 and the yokes 7 are installed in a common frame 8 which can be raised and lowered, as is made visible by the double arrow 9.
  • Existing lifting devices not shown, preferably operate hydraulically.
  • three supports 10 serve as supports for the vessel 1, which support the vessel in the conical intermediate region.
  • the collar-shaped area 11 can also serve as a support surface on a corresponding annular bearing surface of the heating station.
  • An essential feature of the present invention is that the vessel 1 is detachably connected to the heating station 2. If the vessel 1 is placed on or in the heating station 2 in the manner shown, a field is induced by means of the magnetic coil 5, which causes a bath movement in the melt and supplies heat to the melt.
  • the heating station 2 can be arranged next to a casting carousel with a plurality of casting molds, so that the desired batch can be removed from the vessel 1 and poured from it by means of a ladle 12.
  • the outer metal jacket of the casting vessel is slotted in the lower region, ie at the level of the magnet coil 5.
  • the slots 13 run longitudinally axially and project above the magnetic coil or their longitudinal axial height at the top and bottom, the length of the slots being at least 1.2 times the longitudinal axial length of the magnetic coil.
  • the magnetic coil is surrounded by yokes 7, which (in height) are approximately congruent with the slots 13.
  • the slots project above and below the yokes, respectively.
  • the vessel shown serves in the present case as a means of transport for the melt volume filled therein as well as an alloy, holding and degassing vessel.
  • the liquid metal or metal alloy removed from a melting furnace remains in one and the same container during transport, any intermediate storage or an intermediate treatment, namely degassing until pouring, so that pouring into other vessels or furnaces is avoided.
  • a further heating station 2 can be installed stationary at an intermediate station, on which the vessel 1 is placed in the manner shown and kept at the desired temperature by appropriate inductive heating , Metallurgical treatments of the melt are possible at this intermediate station.
  • the alloy removed from the melting furnace is transferred to a pan, which is transported to an intermediate station with a heating station, where the pan is placed on existing supports and then the heating station is raised hydraulically until the lower area of the pan is surrounded by the magnetic coil is.
  • the metal melt is degassed in this intermediate station, for example by injecting nitrogen or argon. Any temperature losses are compensated for by the heating energy introduced via the heating station.
  • the molten metal is slagged off as required and the pan is transported to a casting plant, where it is centered in a corresponding manner as described above on an existing heating station and then coupled to it by lifting the heating station ,
  • the ladle can then be successively removed from the metal melt in batches for casting in molds, which are arranged, for example, on a casting carousel, using a ladle become.
  • the lower tapering of the vessel to a diameter adapted to the ladle serves the purpose that the pan can be practically completely emptied.
  • the combination of the vessel and the heating stand according to the invention can be used for any metal or metal alloy melts, in particular if casting processes are to be avoided as far as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Details (AREA)
  • General Induction Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

La présente invention concerne un dispositif constitué d'une cuve de coulée (1) pouvant être chauffée, qui présente un revêtement résistant au feu et une enveloppe métallique extérieure et qui est destinée à la matière métallique à fondre, notamment à de l'aluminium à fondre, et d'un four-poche (2), qui comprend une bobine magnétique (5). La cuve de coulée (1) est posée de manière amovible sur le four-poche fixe (2). Selon cette invention, l'enveloppe métallique de la cuve de coulée (1) présente, dans la zone inférieure, plusieurs ouvertures (13) en forme de fentes.
PCT/DE2002/004407 2001-12-04 2002-12-02 Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche WO2003047792A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02794964A EP1450974B8 (fr) 2001-12-04 2002-12-02 Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche
AT02794964T ATE297825T1 (de) 2001-12-04 2002-12-02 Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtung
AU2002360884A AU2002360884A1 (en) 2001-12-04 2002-12-02 Device consisting of a heatable casting vessel and a ladle furnace
DE50203641T DE50203641D1 (de) 2001-12-04 2002-12-02 Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159306A DE10159306A1 (de) 2001-12-04 2001-12-04 Induktiv heizbares Gefäß für metallisches Schmelzgut und Verwendung dieses Gefäßes
DE10159306.6 2001-12-04

Publications (2)

Publication Number Publication Date
WO2003047792A1 true WO2003047792A1 (fr) 2003-06-12
WO2003047792A8 WO2003047792A8 (fr) 2005-08-18

Family

ID=7707864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004407 WO2003047792A1 (fr) 2001-12-04 2002-12-02 Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche

Country Status (5)

Country Link
EP (1) EP1450974B8 (fr)
AT (1) ATE297825T1 (fr)
AU (1) AU2002360884A1 (fr)
DE (2) DE10159306A1 (fr)
WO (1) WO2003047792A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080027A1 (fr) * 2004-02-19 2005-09-01 INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG Dispositif compose d'un recipient verseur chauffant et d'un socle chauffant
DE102013114811B3 (de) * 2013-12-23 2014-12-31 Ald Vacuum Technologies Gmbh Vorrichtung und Verfahren zum Behandeln von metallischem Material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110251A1 (de) * 2014-07-21 2016-01-21 Stephan Schwenkel Schmelzaggregat zum Einschmelzen von Gusswerkstoffen sowie ein Verfahren zur Herstellung einer Schmelze für das Gießen
CN106643151A (zh) * 2016-11-28 2017-05-10 无锡市莱达热工工程有限公司 熔锌保温炉

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795842A (en) * 1929-01-08 1931-03-10 Westinghouse Electric & Mfg Co Induction furnace
DE1092575B (de) * 1957-09-04 1960-11-10 Wild Barfield Electr Furnaces Induktionsofen
DE1136435B (de) * 1958-03-19 1962-09-13 Aeg Rinnenloser Induktionstiegelofen zum Schmelzen von Metallen, UEberhitzen und Warmhalten von Metallschmelzen
DE2035221B1 (de) * 1970-07-16 1971-10-14 Deutsche Edelstahlwerke AG, 4150Krefeld Einrichtung zum Warmhalten von metallischen Schmelzen
DE3910777A1 (de) * 1989-04-04 1990-10-11 Leybold Ag Einrichtung mit einem tiegel, in dem sich ein metall oder eine metall-legierung befindet
DE4035552A1 (de) * 1989-11-09 1991-05-16 Fuji Electric Co Ltd Vorrichtung zum erhitzen von geschmolzenem metall in einer giesspfanne
EP0612201A2 (fr) * 1993-02-19 1994-08-24 Inductotherm Corp. Dispositif de chauffage améliorée pour poche à induction et fours sous vide
DE20119657U1 (de) * 2001-12-04 2002-03-21 Induga Industrieoefen Und Gies Induktiv heizbares Gefäß für metallisches Schmelzgut

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143559U (ja) * 1983-03-18 1984-09-26 川崎製鉄株式会社 溶鋼加熱装置付き連鋳タンデイツシユ
SE452190B (sv) * 1984-02-06 1987-11-16 Asea Ab Skenk eller vermare (tundish) for induktiv vermning och/eller omroring av metalliska smeltor sasom stal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795842A (en) * 1929-01-08 1931-03-10 Westinghouse Electric & Mfg Co Induction furnace
DE1092575B (de) * 1957-09-04 1960-11-10 Wild Barfield Electr Furnaces Induktionsofen
DE1136435B (de) * 1958-03-19 1962-09-13 Aeg Rinnenloser Induktionstiegelofen zum Schmelzen von Metallen, UEberhitzen und Warmhalten von Metallschmelzen
DE2035221B1 (de) * 1970-07-16 1971-10-14 Deutsche Edelstahlwerke AG, 4150Krefeld Einrichtung zum Warmhalten von metallischen Schmelzen
DE3910777A1 (de) * 1989-04-04 1990-10-11 Leybold Ag Einrichtung mit einem tiegel, in dem sich ein metall oder eine metall-legierung befindet
DE4035552A1 (de) * 1989-11-09 1991-05-16 Fuji Electric Co Ltd Vorrichtung zum erhitzen von geschmolzenem metall in einer giesspfanne
EP0612201A2 (fr) * 1993-02-19 1994-08-24 Inductotherm Corp. Dispositif de chauffage améliorée pour poche à induction et fours sous vide
DE20119657U1 (de) * 2001-12-04 2002-03-21 Induga Industrieoefen Und Gies Induktiv heizbares Gefäß für metallisches Schmelzgut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080027A1 (fr) * 2004-02-19 2005-09-01 INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG Dispositif compose d'un recipient verseur chauffant et d'un socle chauffant
DE102013114811B3 (de) * 2013-12-23 2014-12-31 Ald Vacuum Technologies Gmbh Vorrichtung und Verfahren zum Behandeln von metallischem Material
WO2015097025A1 (fr) 2013-12-23 2015-07-02 Ald Vacuum Technologies Gmbh Dispositif et procédé de traitement de matériau métallique

Also Published As

Publication number Publication date
ATE297825T1 (de) 2005-07-15
EP1450974B8 (fr) 2005-08-17
EP1450974A1 (fr) 2004-09-01
EP1450974B1 (fr) 2005-06-15
DE10159306A1 (de) 2003-06-12
DE50203641D1 (de) 2005-08-18
AU2002360884A1 (en) 2003-06-17
WO2003047792A8 (fr) 2005-08-18

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