EP0152849A2 - Casting ladle or tundish - Google Patents
Casting ladle or tundish Download PDFInfo
- Publication number
- EP0152849A2 EP0152849A2 EP85101148A EP85101148A EP0152849A2 EP 0152849 A2 EP0152849 A2 EP 0152849A2 EP 85101148 A EP85101148 A EP 85101148A EP 85101148 A EP85101148 A EP 85101148A EP 0152849 A2 EP0152849 A2 EP 0152849A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ladle
- reinforcement
- tundish
- metallic
- pan
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title 1
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000000155 melt Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract 3
- 230000001939 inductive effect Effects 0.000 claims abstract 3
- 238000009413 insulation Methods 0.000 claims abstract 2
- 230000008018 melting Effects 0.000 claims abstract 2
- 238000002844 melting Methods 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910003271 Ni-Fe Inorganic materials 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000000704 physical effect Effects 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 230000006698 induction Effects 0.000 description 12
- -1 A1203 Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Definitions
- the present invention relates to a ladle or tundish according to the preamble of claim 1.
- the tundish is understood to be a tundish with bottom filling.
- induction-heated pans In the case of induction-heated pans, one wants to achieve that the greatest possible proportion of the power of the induction coils arranged outside the pan is converted in the melt, and one wants to avoid that a large part of this power is converted into heat in the walls of the pan, the lining, etc. is implemented. If one were to use an induction coil fed with a single-phase, mains-frequency current in a pan with a metallic, for example stainless, lining or jacket, excessive losses in the jacket would occur. One would also like to avoid excessive temperatures on the outside of the pan, since this can cause damage to the surroundings, for example to the induction coil. At the same time, you want to keep the dimensions of the pan and its walls small.
- the invention has for its object to develop a ladle or a ladle in which the magnetic field of the induction coil in the wall of the pan causes as little heat loss as possible, the outer wall of the pan adopts the lowest possible temperatures and the dimensions of the pan are kept as small as possible can be.
- the inner part 3 of the ladle consists in a known manner of a heat-insulating ceramic mass, such as Al 2 O 3 (see 4 in Figure 2), which can be surrounded by firebrick (5 in Figure 2) and insulating bricks (6 in Figure 2) .
- a heat-insulating ceramic mass such as Al 2 O 3 (see 4 in Figure 2)
- firebrick 5 in Figure 2
- insulating bricks (6 in Figure 2)
- all types of known feed masses can be used for this inner part 3.
- An outer wall part 7, to which the invention relates directly, is arranged radially outside the inner part 3 (FIGS. 1 and 2).
- This wall part 7 consists of a reinforcement which is embedded in the lining material and / or concrete and / or cement or ceramic material and possibly also in glass fibers (insulating fibers).
- the outside temperature of a molten steel in the ladle can be 250 degrees Celsius and the temperature drop through the wall part 7 can be 110 degrees Celsius.
- the inner diameter of the wall part 7 can be approximately 1 m, for example.
- Figure 3 shows an enlarged view of a detail of the outer wall part 7, which consists of an inner part 8 belonging to the wall part 7 made of A1 2 0 3 and cement and outer parts 9 made of glass fibers and cement.
- the reinforcement of the outer wall part 7 is embedded in these materials, and this reinforcement should consist of metallic material in order to prevent breaks in the brittle material.
- the metal of the reinforcement should be non-magnetic, but this is not absolutely necessary.
- the specific electrical resistance of the material should be greater than that of electrical wiring material. Its coefficient of thermal expansion should be close to that applicable to concrete / cement, so in that Concrete / cement no cracks occur.
- a material based on nickel-iron can be mentioned as an example.
- the reinforcement can consist of metal elements 10 running axially to the ladle axis, which are fastened to the flange or collar 11 of the ladle or to another metallic upper ring.
- the metal elements should be provided without connection points or with interruptions in order to prevent the formation of closed electrical circuits, for example from flange to flange, since heat would be generated unnecessarily in these circles by their magnetic interlinking with the field 2.
- FIG. 4 shows another embodiment of the outer wall part 7, axial reinforcement elements 10 of the type described above also being present.
- concentric wires 12 are embedded in the mass, but have no electrical contact with the reinforcing elements 10. These wires are also "cut” for the reason mentioned above, i.e. not connected in closed circles at their ends, or provided with an electrical interruption.
- the elements (wires) 10 and 12 can be non-magnetic, but also magnetic if necessary, and their diameter is approximately 1 to 4 mm.
- FIG. 5 shows an example of a compression diagram for a ladle at operating temperature.
- the mechanical stress is denoted by ⁇ t in MPa, and the distance, calculated from the inside of the wall part 7, is given in mm.
- the diagram shows how the voltage curve 17 varies towards the outer surface.
- Figure 6 shows a further embodiment according to the invention with an induction coil 1, a reinforced outer wall part 7 and an inner lining part 3 and an upper collar or steel part 18.
- the bottom 19 is made of steel and the pan can be used, for example, in an atomizing system.
- the stirring by the single-phase spread coil is repulsive (50 Hz), but the coil can alternatively also be fed in multiple phases, whereby a motor-driven stirring is obtained.
- the same bath movement in m / s
- a reinforced wall, as described above, corresponding to the wall part 7 can also be used in a tundish (FIG. 7A), in that a side wall 24, inside an induction coil 23, has such a reinforced wall outside a conventional lining, corresponding to FIG. 3 in Figure 1 is attached.
- FIG. 7B An RH plant or a DH plant, see FIG. 7B, or a plant for continuous casting, see FIG. 7A, can be mentioned as examples of further possible uses of the invention.
- a ladle without a metallic shell with outer and inner parts (7 and 3 in Figure 1) and surrounding induction coil 1 and with bottom filling opening 20 is shown.
- Buffer stations keeping warm when the business is interrupted), keeping warm etc. can be mentioned as further examples in addition to the previous data.
- An induction coil 22 can be fitted around the RH system in FIG. 7B, a piece of the wall 21 being embodied within the coil according to the invention.
- the metallic reinforcement can consist of a Ni-Fe-based material, titanium or another alloy with suitable physical properties.
- the base material of the wall part 7, in which the reinforcement elements are embedded can alternatively be made of a metal oxide, e.g. A1203, or made of a silicate, reinforced with fibers of silicon carbide, silicon nitride, glass, boron nitride, etc., and connected with cement, phosphate, silicon ester, etc.
- a metal oxide e.g. A1203
- silicate reinforced with fibers of silicon carbide, silicon nitride, glass, boron nitride, etc., and connected with cement, phosphate, silicon ester, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- General Induction Heating (AREA)
- Furnace Details (AREA)
Abstract
Bei einer Giesspfanne oder Zwischenpfanne (tundish) zum induktiven Erwärmen und/oder Erschmelzen von metallischen Schmelzen, wie beispielsweise Stahl, besteht die Wand der Giesspfanne oder Zwischenpfanne aus einem inneren Teil (3) aus Futtermasse für die Wärmeisolation und einem äusseren Wandteil (7), welcher aufgebaut ist aus einer metallischen Armierung, die in der Futtermasse und/oder Beton und/oder Zement und/oder keramischer Masse und eventuell Fasern eingebettet ist, wobei die Armierung aus axial zur Pfannenachse verlaufenden Drähten besteht, die ganz oder teilweise in einem oberen Kragen oder Flansch oder dergleichen der Pfanne befestigt sind. Diese Drähte enden an ihrem unteren Ende entweder ohne Kontakt mit metallisch leitenden Teilen oder sind über elektrisch nicht leitende Teile in einen unteren Kragen oder Flansch der Pfanne befestigt. Auf diese Weise wird verhindert, dass in der Wand geschlossene elektrisch leitende Kreisverbindungen entstehen.In the case of a tundish or tundish for inductive heating and / or melting of metallic melts, such as steel, the wall of the tundish or tundish consists of an inner part (3) made of lining material for thermal insulation and an outer wall part (7), which is constructed from a metallic reinforcement, which is embedded in the lining mass and / or concrete and / or cement and / or ceramic mass and possibly fibers, the reinforcement consisting of wires running axially to the pan axis, all or part of an upper collar or flange or the like of the pan are attached. These wires end at their lower ends either without contact with metallic conductive parts or are fixed in a lower collar or flange of the pan via electrically non-conductive parts. In this way it is prevented that closed electrically conductive circular connections occur in the wall.
Description
Die vorliegende Erfindung betrifft eine Gießpfanne oder Zwischenpfanne gemäß dem Oberbegriff des Anspruches 1. Unter Zwischenpfanne wird dabei eine Pfanne mit Bodenabfüllung verstanden ("tundish").The present invention relates to a ladle or tundish according to the preamble of
Bei induktiv beheizten Pfannen möchte man erreichen, daß ein möglichst hoher Anteil der Leistung der außerhalb der Pfanne angeordneten Induktionsspulen in der Schmelze umgesetzt wird, und man möchte vermeiden, daß ein großer Teil dieser Leistung in den Wänden der Pfanne, dem Futter usw. in Wärme umgesetzt wird. Würde man bei einer Pfanne mit metallischem, beispielsweise rostfreiem, Futter oder Mantel eine mit einphasigem, netzfrequentem Strom gespeiste Induktionsspule verwenden, so würden zu große Verluste im Mantel auftreten. Man möchte auch zu hohe Temperaturen an der Außenseite der Pfanne vermeiden, da hierdurch Schäden in der Umgebung, zum Beispiel an der Induktionsspule, auftreten können. Gleichzeitig möchte man die Abmessungen der Pfanne und ihrer Wände klein halten.In the case of induction-heated pans, one wants to achieve that the greatest possible proportion of the power of the induction coils arranged outside the pan is converted in the melt, and one wants to avoid that a large part of this power is converted into heat in the walls of the pan, the lining, etc. is implemented. If one were to use an induction coil fed with a single-phase, mains-frequency current in a pan with a metallic, for example stainless, lining or jacket, excessive losses in the jacket would occur. One would also like to avoid excessive temperatures on the outside of the pan, since this can cause damage to the surroundings, for example to the induction coil. At the same time, you want to keep the dimensions of the pan and its walls small.
Der Erfindung liegt die Aufgabe zugrunde, eine Gießpfanne oder eine Zwischenpfanne zu entwickeln, bei der durch das magnetische Feld der Induktionsspule in der Wand der Pfanne möglichst geringe Wärmeverluste verursacht werden, die Außenwand der Pfanne möglichst geringe Temperaturen annimmt und die Abmessungen der Pfanne möglichst klein gehalten werden können.The invention has for its object to develop a ladle or a ladle in which the magnetic field of the induction coil in the wall of the pan causes as little heat loss as possible, the outer wall of the pan adopts the lowest possible temperatures and the dimensions of the pan are kept as small as possible can be.
Zur Lösung dieser Aufgabe wird eine Gleβpranne oaer zwischenpfanne gemäß dem Oberbegriff des Anspruches 1 vorgeschlagen, welche erfindungsgemäß die im kennzeichnenden Teil des Anspruches 1 genannten Merkmale hat.To solve this problem, a Gleßpranne or intermediate pan is proposed according to the preamble of
Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen genannt.Advantageous embodiments of the invention are mentioned in the further claims.
Anhand der in den Figuren gezeigten Ausführungsbeispiele soll die Erfindung näher erläutert werden. Es zeigen,
Figur 1 einen Querschnitt durch eine Gießpfanne,Figur 2 eine Darstellung einer Gießpfanne nach der Erfindung ohne Induktionsspule,Figur 3 einen Abschnitt des äußeren Wandteils der Gießpfanne,Figur 4 eine alternative Ausführungsform gegenüberFigur 3,Figur 5 die Verteilung der Tangentialspannung im aüßeren Wandteil der Gießpfanne,Figur 6 eine alternative Ausführungsform einer Gießpfanne nach der Erfindung,- Figur 7A und B zwei Anwendungsbeispiele der Erfindung.
Figur 1 zeigt eine Gießpfanne gemäß der Erfindung, deren Schmelzeninhalt durch das von einer Induktionsspule 1 - erzeugten magnetischen Feld erwärmt wird. Die Induktionsspule wird mit einphasigem, netzfrequentem Strom gespeist. Das von der Induktionsspuleerzeugte Feld 2 ist durch Feldlinien inFigur 1 angedeutet, und man möchte erreichen, daß die Wände der Gießpfanne so wenig wie möglich durch dieses Feld erwärmt werden. Gleichzeitig sollen die Abmessungen der Wände und damit der Pfanne klein gehalten werden. Auch möchte man Risse oder dergleichen in der Gießpfanne vermeiden.
- FIG. 1 shows a cross section through a ladle,
- FIG. 2 shows a ladle according to the invention without an induction coil,
- FIG. 3 shows a section of the outer wall part of the ladle,
- FIG. 4 shows an alternative embodiment to FIG. 3,
- FIG. 5 shows the distribution of the tangential stress in the outer wall part of the ladle,
- FIG. 6 shows an alternative embodiment of a ladle according to the invention,
- Figure 7A and B two application examples of the invention.
- FIG. 1 shows a ladle according to the invention, the melt content of which is heated by the magnetic field generated by an
induction coil 1. The induction coil is fed with single-phase, mains frequency current. Thefield 2 generated by the induction coil is indicated by field lines in FIG. 1, and one would like to achieve that the walls of the ladle pass through as little as possible this field will be heated. At the same time, the dimensions of the walls and thus the pan should be kept small. You also want to avoid cracks or the like in the ladle.
Der innere Teil 3 der Gießpfanne besteht in bekannter Weise aus einer wärmeisolierenden keramischen Masse, wie beispielsweise Al203 (siehe 4 in Figur 2), die von Schamottziegeln (5 in Figur 2) und Isolierziegeln (6 in Figur 2) umgeben sein kann. Es können jedoch für dieses innere Teil 3 alle Arten bekannter Futtermassen verwendet werden.The
Radial außerhalb des inneren Teils 3 (Figur 1 und 2) ist ein äußerer Wandteil 7 angeordnet, auf den sich die Erfindung unmittelbar bezieht. Dieser Wandteil 7 besteht aus einer Armierung, die in Futtermasse und/oder Beton und/oder Zement oder keramische Masse sowie eventuell auch in Glasfasern (Isolierfasern) eingebettet ist.An
Die Außentemperatur bei einer Stahlschmelze in der Gießpfanne kann 250 GradC und der Temperaturabfall durch das Wandteil 7 kann 110 Grad C betragen. Der Innendurchmesser des Wandteils 7 kann beispielsweise etwa 1 m betragen.The outside temperature of a molten steel in the ladle can be 250 degrees Celsius and the temperature drop through the
Figur 3 zeigt in vergrößerter Darstellung eine Einzelheit des äußeren Wandteils 7, welches aus einem zu dem Wandteil 7 gehörenden Innenteil 8 aus A1203 und Zement und Außenteilen 9 aus Glasfasern und Zement besteht. In diese Massen ist die Armierung des äußeren Wandteils 7 eingebettet, und diese Armierung soll aus metallischem Material bestehen, um Brüche in dem spröden Material zu verhindern. Das Metall der Armierung soll unmagnetisch sein, jedoch ist dies nicht zwingend notwendig. Der spezifische elektrische Widerstand des Materials soll größer als der von elektrischem Leitungsmaterial sein. Sein Wärmeausdehnungskoeffizient soll nahe dem für Beton/Zement geltenden liegen, damit in dem Beton/Zement keine Risse auftreten. Als Beispiel kann ein auf Nickel-Eisen basierendes Material genannt werden.Figure 3 shows an enlarged view of a detail of the
Die Armierung kann aus axial zur Pfannenachse verlaufenden Metallelementen 10 bestehen, die an dem Flansch oder Kragen 11 der Gießpfanne oder an einem anderen metallischen oberen Ring befestigt sind. Am unteren Ende dagegen sollen die Metallelemente ohne Anschlußstellen oder mit Unterbrechungen versehen sein, um die Entstehung geschlossener elektrischer Kreise beispielsweise von Flansch zu Flansch zu verhindern, da in diesen Kreisen durch ihre magnetische Verkettung mit dem Feld 2 unnötig Wärme entstehen würden.The reinforcement can consist of
Figur 4 zeigt eine andere Ausführungsform des äußeren Wandteils 7, wobei ebenfalls axiale Armierungselemente 10 der oben beschriebenen Art vorhanden sind. Zusätzlich sind konzentrisch verlaufende Drähte 12 in die Masse eingebettet, die jedoch keinen elektrischen Kontakt mit den Armierungselementen 10 haben. Auch diese Drähte sind aus dem obengenannten Grunde "abgeschnitten", d.h. nicht an ihren Enden zu geschlossenen Kreisen verbunden, oder mit einer elektrischen Unterbrechung versehen. Die Elemente (Drähte) 10 und 12 können unmagnetisch, notfalls aber auch magnetisch sein, und ihr Durchmesser beträgt ca. 1 bis 4 mm.FIG. 4 shows another embodiment of the
Die das Wandteil 7 bildende Schicht wird komprimiert, um eventuelle Poren zu beseitigen und eine bessere Festigkeit zu erhalten. Figur 5 zeigt ein Beispiel eines Kompressionsdiagramms für eine Gießpfanne bei Betriebstemperatur. Die mechanische Spannung ist mit δt in MPa bezeichnet, und der Abstand, gerechnet von der Innenseite des Wandteils 7, ist in mm angegeben. Auf der Innenseite des Wandteils 7 ist eine Betonschicht 13 vorhanden, an die sich nach außen zunächst metallisch armierter Beton 14 und dann eine Glasfaserschicht 15 anschließt. Das Diagramm zeigt, wie die Spannungskurve 17 zur Außenfläche hin variiert.The layer forming the
Figur 6 zeigt ein weiteres Ausführungsbeispiel gemäß der Erfindung mit einer Induktionsspule 1, einem armierten äußeren Wandteil 7 und einem inneren Futterteil 3 sowie einem oberen Kragen oder Stahlteil 18. Der Boden 19 besteht aus Stahl, und die Pfanne kann beispielsweise in einer Zerstäubungsanlage verwendet werden. Das Umrühren durch die einphasig gespreizte Spule ist repulsiv (50 Hz), jedoch kann die Spule alternativ auch mehrphasig gespeist werden, wobei man ein motorisches Umrühren erhält. Bei höheren Feldstärken kann man dieselbe Badbewegung (in m/s) für sowohl repulsive wie motorische Umrührung erhalten.Figure 6 shows a further embodiment according to the invention with an
Eine armierte Wand, wie sie vorstehend beschrieben wird, entsprechend dem Wandteil 7 kann auch bei einer Zwischenpfanne (tundish) (Figur 7A) verwendet werden, indem einer Seitenwand 24, innerhalb einer Induktionsspule 23, eine solche armierte Wand außerhalb eines üblichen Futters, entsprechend 3 in Figur 1, angebracht wird.A reinforced wall, as described above, corresponding to the
Als Beispiele für weitere Anwendungsmöglichkeiten der Erfindung können eine RH-Anlage oder eine DH-Anlage, siehe Figur 7B, oder eine Anlage zum kontinuierlichen Gießen, siehe Figur 7A, genannt werden. Hier wird eine Gießpfanne ohne metallischen Mantel mit Außen- und Innenteilen (7 bzw.3 in Figur 1) und umgebender Induktionsspule 1 sowie mit Bodenabfüllöffnung 20 gezeigt. Als weitere Beispiele außer den vorgennaten können Pufferstationen (Warmhaltung bei Betriebsunterbrechung), Warmhaltung usw. genannt werden.An RH plant or a DH plant, see FIG. 7B, or a plant for continuous casting, see FIG. 7A, can be mentioned as examples of further possible uses of the invention. Here is a ladle without a metallic shell with outer and inner parts (7 and 3 in Figure 1) and surrounding
Um die RH-Anlage in Figur 7B kann eine Induktionsspule 22 angebracht werden, wobei ein Stück der Wand 21 innerhalb der Spule gemäß der Erfindung ausgeführt ist. Die metallische Armierung kann aus einem auf Ni-Fe basierenden Material, Titan oder einer anderen Legierung mit geeigneten physikalischen Eigenschaften, bestehen.An
Das Grundmaterial des Wandteils 7, in welchem die Armierungselemente eingebettet sind, kann alternativ aus einem Metalloxyd, z.B. A1203, oder aus einem Silikat, verstärkt mit Fasern aus Siliziumkarbid, Siliziumnitrid, Glas, Bornitrid usw., sowie verbunden mit Zement, Phosphat, Siliziumester usw. bestehen.The base material of the
Die Erfindung kann im Rahmen des offenbarten allgemeinen Erfindungsgedanken in vielfacher Weise variiert werden.The invention can be varied in many ways within the scope of the general inventive idea disclosed.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8400586A SE452190B (en) | 1984-02-06 | 1984-02-06 | POWDER OR HEATER (TUNDISH) FOR INDUCTIVE HEATING AND / OR MIXING OF METAL METAL MELTERS AS STEEL |
SE8400586 | 1984-02-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0152849A2 true EP0152849A2 (en) | 1985-08-28 |
EP0152849A3 EP0152849A3 (en) | 1985-10-09 |
EP0152849B1 EP0152849B1 (en) | 1988-03-02 |
Family
ID=20354610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85101148A Expired EP0152849B1 (en) | 1984-02-06 | 1985-02-04 | Casting ladle or tundish |
Country Status (5)
Country | Link |
---|---|
US (1) | US4618964A (en) |
EP (1) | EP0152849B1 (en) |
JP (1) | JPS60187459A (en) |
DE (1) | DE3561691D1 (en) |
SE (1) | SE452190B (en) |
Cited By (7)
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EP0234572A1 (en) * | 1986-02-27 | 1987-09-02 | Asea Ab | Metallurgical container |
EP0234536A1 (en) * | 1986-02-24 | 1987-09-02 | Asea Ab | Method for separation of inclusions in molten metal and device for carrying out the method |
US5039345A (en) * | 1988-04-05 | 1991-08-13 | Advanced Metals Technology Corp. | Fiber composite article and method of manufacture |
EP0453673A1 (en) * | 1988-04-05 | 1991-10-30 | Advanced Metals Technology Corp | Fibre composite article and method of manufacture therof |
EP0612201A2 (en) | 1993-02-19 | 1994-08-24 | Inductotherm Corp. | Improved heating apparatus for induction ladle and vacuum furnaces |
US5416794A (en) * | 1990-01-31 | 1995-05-16 | Inductotherm Corp. | Induction furnace havng a modular induction coil assembly |
US5880404A (en) * | 1996-06-28 | 1999-03-09 | Advanced Metals Technology Corporation | Power transmission support structures |
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JPH0794059B2 (en) * | 1986-01-21 | 1995-10-11 | 川崎重工業株式会社 | Horizontal continuous casting equipment |
NO166750C (en) * | 1989-02-02 | 1991-08-28 | Eb National Tranformer As | SHIELD OF ELECTROMAGNETIC MOVERS. |
US5192488A (en) * | 1989-11-09 | 1993-03-09 | Fuji Electric Co., Ltd. | Apparatus for heating molten in a ladle |
JP2692367B2 (en) * | 1989-11-09 | 1997-12-17 | 富士電機株式会社 | Ladle bath water heating device |
US5550353A (en) * | 1990-01-31 | 1996-08-27 | Inductotherm Corp. | Induction heating coil assembly for prevent of circulating current in induction heating lines for continuous-cast products |
US5257281A (en) * | 1990-01-31 | 1993-10-26 | Inductotherm Corp. | Induction heating apparatus and method |
CA2237609A1 (en) * | 1995-11-13 | 1997-05-22 | Advanced Metals Technology Corp. | Removable liners for inductive furnaces |
US6393044B1 (en) * | 1999-11-12 | 2002-05-21 | Inductotherm Corp. | High efficiency induction melting system |
DE10159306A1 (en) * | 2001-12-04 | 2003-06-12 | Induga Industrieoefen Und Gies | Induction heatable vessel for melting metal and use of this vessel |
US20150108325A1 (en) * | 2013-10-23 | 2015-04-23 | Keith Ryan | Method and apparatus for electrically-heated refractory moulds and mandrels |
CA3110177A1 (en) * | 2018-08-23 | 2020-02-27 | Beemetal Corp. | Systems and methods for continuous production of gas atomized metal powers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB493892A (en) * | 1937-08-24 | 1938-10-17 | George Donald Lee Horsburgh | Improvements in or relating to electric induction furnaces |
GB704960A (en) * | 1950-11-01 | 1954-03-03 | Henry Wiggin And Company Ltd | Improvements to electric induction furnaces |
EP0085461A1 (en) * | 1982-01-29 | 1983-08-10 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Liquid-cooled side walls for electric-arc furnaces |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2366079A1 (en) * | 1976-10-04 | 1978-04-28 | Siderurgie Fse Inst Rech | METALLURGIC POCKET WITH FRAGMENTED METAL ENCLOSURE |
-
1984
- 1984-02-06 SE SE8400586A patent/SE452190B/en not_active IP Right Cessation
-
1985
- 1985-02-04 EP EP85101148A patent/EP0152849B1/en not_active Expired
- 1985-02-04 JP JP60019814A patent/JPS60187459A/en active Granted
- 1985-02-04 DE DE8585101148T patent/DE3561691D1/en not_active Expired
- 1985-02-05 US US06/698,447 patent/US4618964A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB493892A (en) * | 1937-08-24 | 1938-10-17 | George Donald Lee Horsburgh | Improvements in or relating to electric induction furnaces |
GB704960A (en) * | 1950-11-01 | 1954-03-03 | Henry Wiggin And Company Ltd | Improvements to electric induction furnaces |
EP0085461A1 (en) * | 1982-01-29 | 1983-08-10 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Liquid-cooled side walls for electric-arc furnaces |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0234536A1 (en) * | 1986-02-24 | 1987-09-02 | Asea Ab | Method for separation of inclusions in molten metal and device for carrying out the method |
EP0234572A1 (en) * | 1986-02-27 | 1987-09-02 | Asea Ab | Metallurgical container |
US5039345A (en) * | 1988-04-05 | 1991-08-13 | Advanced Metals Technology Corp. | Fiber composite article and method of manufacture |
EP0453673A1 (en) * | 1988-04-05 | 1991-10-30 | Advanced Metals Technology Corp | Fibre composite article and method of manufacture therof |
EP0815994A2 (en) * | 1988-04-05 | 1998-01-07 | Advanced Metals Technology Corp | Fibre composite article |
EP0815994A3 (en) * | 1988-04-05 | 2001-01-17 | Advanced Metals Technology Corp | Fibre composite article |
US5416794A (en) * | 1990-01-31 | 1995-05-16 | Inductotherm Corp. | Induction furnace havng a modular induction coil assembly |
US5425048A (en) * | 1990-01-31 | 1995-06-13 | Inductotherm Corp. | Heating apparatus for induction ladle and vacuum furnaces |
EP0612201A2 (en) | 1993-02-19 | 1994-08-24 | Inductotherm Corp. | Improved heating apparatus for induction ladle and vacuum furnaces |
EP0612201A3 (en) * | 1993-02-19 | 1994-09-21 | Inductotherm Corp | Improved heating apparatus for induction ladle and vacuum furnaces. |
US5880404A (en) * | 1996-06-28 | 1999-03-09 | Advanced Metals Technology Corporation | Power transmission support structures |
Also Published As
Publication number | Publication date |
---|---|
US4618964A (en) | 1986-10-21 |
EP0152849A3 (en) | 1985-10-09 |
DE3561691D1 (en) | 1988-04-07 |
JPH0118827B2 (en) | 1989-04-07 |
SE8400586D0 (en) | 1984-02-06 |
SE452190B (en) | 1987-11-16 |
EP0152849B1 (en) | 1988-03-02 |
JPS60187459A (en) | 1985-09-24 |
SE8400586L (en) | 1985-08-07 |
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