EP2142874A1 - Device for introducing metal bars into a metal bath - Google Patents

Device for introducing metal bars into a metal bath

Info

Publication number
EP2142874A1
EP2142874A1 EP08715881A EP08715881A EP2142874A1 EP 2142874 A1 EP2142874 A1 EP 2142874A1 EP 08715881 A EP08715881 A EP 08715881A EP 08715881 A EP08715881 A EP 08715881A EP 2142874 A1 EP2142874 A1 EP 2142874A1
Authority
EP
European Patent Office
Prior art keywords
metal bath
ingot
bath
bar
holding device
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
Application number
EP08715881A
Other languages
German (de)
French (fr)
Other versions
EP2142874B1 (en
Inventor
Peter De Kock
Matthias Kretschmer
Holger Behrens
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.)
SMS Siemag AG
Original Assignee
SMS Siemag 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 SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2142874A1 publication Critical patent/EP2142874A1/en
Application granted granted Critical
Publication of EP2142874B1 publication Critical patent/EP2142874B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • C23C2/004—Snouts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/0031—Charging with tiltable dumpers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/32—Refining zinc
    • 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

Definitions

  • the invention relates to a device for introducing metallic ingots into a metal bath, in particular from zinc ingots into a zinc bath, the device having feeding means with which a billet can be fed to the metal bath, and the device having heating means with which the ingot projects and / or heated to a desired temperature during its delivery into the metal bath.
  • the strip to be galvanized is passed through a metal bath with a liquid zinc alloy.
  • the zinc used for the coating is thereby continuously discharged from the zinc bath. Therefore, zinc must be added to the bath to maintain a constant degree of filling of the zinc bath.
  • charging devices are known with which metal billets can be conveyed into the container with the molten metal.
  • the temperature of the molten metal is subject to fluctuations with the addition of new ingot material.
  • the cold supplied ingot cools the melt in the receptacle, in particular in the region of the addition point, so that the process of the coating can be disturbed.
  • JP 1128 1264 A similar solution is known from JP 1128 1264. Again, heat is passed from a melting furnace in the form of hot air to the supplied billets, which are then supplied to the metal bath, if they have a certain temperature.
  • the invention is therefore based on the object to remedy this situation and to propose a device for introducing metallic ingots into a metal bath, in which this negative effect can not occur.
  • the device should be characterized in that a simpler Prozeßpat- tion is possible and the required process parameters are more accurate and faster controllable.
  • the heating means of the device have at least one independently operated heating element, which can be operated independently of other parts of the system with which the device interacts.
  • the proposed heating element is not dependent on an energy supply from another part of the plant, the temperature of the supplied billet can be done much faster and more precise, so that the process is easier.
  • the heating element may be a gas burner or an electrically operated element; In the latter case, above all, an induction heating element is suitable.
  • the supply means may comprise a holding device for at least one ingot, with which the ingot can be held so that it at least partially immersed in the metal bath.
  • the holding device is preferably equipped with movement means which it can move between a first position in which the ingot is located outside the metal bath and a second position in which the ingot is located at least partially inside the metal bath.
  • the moving means of the holding device can be designed so that they can perform a combined lifting and tilting movement of the holding device.
  • the heating means on the supply means are arranged to be movable.
  • the heating means are arranged in the region of the supply means in the conveying direction in front of the metal bath stationary.
  • the heating means may be arranged in the region of a part of the supply means, on which the ingot is conveyed in the horizontal direction.
  • the device preferably has conveying means for preferably automatically conveying bars from a support or storage station to the holding device.
  • the conveying means may have a Hubbalken user and / or a sliding mechanism.
  • the conveying means can also feed two parallel bars holding devices.
  • the proposed device it is possible to quickly and accurately preheat the temperature of the bar to be supplied to the metal bath to a desired temperature, so that optimal process control can take place. Preheating is done in a precise and economical way.
  • FIG. 1 shows a perspective view of a zinc ingot charging device according to a first embodiment
  • Fig. 2 in perspective view an alternative embodiment of the Zinkbarrenchargiervorraum.
  • a device 1 for introducing zinc ingot 2 in a metal bath 3 is shown. From the metal bath 3 projects in a known manner, a furnace trunk 11, in which the metal strip to be coated (not shown) is guided. The feeding of ingot 2 into the metal bath 3 takes place with the feeding means 4 shown.
  • a component of the feeding means 4 is a holding device 6, which holds the ingot 2 to be introduced into the metal bath 3 in such a way that it dips into the bath 3 to a desired degree and can thus melt off.
  • An essential part of the device 1 is a heating means 5, which has a (not shown in detail) independently operated heating element, which can be operated independently of other parts of the system with which the device 1 cooperates.
  • the heating element has its own energy supply, which is not coupled to other parts of the system. In particular, the heat of another furnace is not used to warm the bars 2.
  • a heating element As a heating element, a gas burner or an electric heater can be used.
  • an induction heater with which a quick heating of the billet 2 is possible, has proven to be useful.
  • the heating means 5 are arranged to be movable. As can be seen in the synopsis of the two charging devices 1 of Fig. 1, the heating means 5 makes the (lifting and tilting) movement of the holding device 6 with. Thus, the ingot 2 can be kept exactly tempered until immersed in the metal bath 3. The heating means 5 are thus fixed mitbeweglich on the charging device. The billet 2 can be heated constantly and can also be tempered during the Abschmelzvorgangs itself.
  • FIG. 2 Another possibility is shown in Fig. 2.
  • the heating means 5 are arranged stationary, in the area over which the ingot 2 is guided horizontally on the feed means 4.
  • the ingot 2 can be heated in a waiting position, while the previous ingot melts in the metal bath.
  • the thus preheated billet 2 reduced when immersed in the metal bath, the temperature difference that he would cause without preheating.
  • FIG. 1 an arrangement is shown in which two charging devices 1 are arranged laterally next to the furnace trunk 11.
  • the left or rear Charging device dips just the metal bar 2 in the metal bath 3, so that it can melt.
  • the right or front charging device 1 holds the bar 2 in a not yet dipping position.
  • the holding device 6 can be moved between two positions, namely between a first position (right or front), in which the metal bar 2 is not yet immersed in the metal bath 3, and a second position (left or rear). in which the ingot 2 dips and melts.
  • the holder of the billet 2 is effected by a basket element 10th
  • the general handling of the ingot 2 can be seen from the further apparatus configuration according to the figures:
  • the input of the zinc ingot 2 is carried out by a forklift at a support or storage station 9, which is located at the end of a lifting beam conveyor 7.
  • the bars 2 are preferably abandoned from the operating side on the trained as a step conveyor Hubbalken makeuper 7.
  • Hubbalken makeupers 7 By the conveying movement of Hubbalken makeers 7, the zinc ingot 2 are transported to the center of the plant.
  • the zinc ingots 2 Once the zinc ingots 2 have arrived at the end of the lifting beam conveyor 7, they are transported on by an associated slide mechanism 8; the zinc ingot 2 is now pushed at a 90 ° angle to the supply conveyor 7 in the direction of the holding device 6.
  • a transport surface is a transfer table 12 with a stainless steel plate over which the bar 2 is pushed.
  • Between the conveyor 7 and the holding device 6 is still an intermediate position. This serves to bridge the distance between the conveyor 7 and the holding device 6 and as a store in the event of a supply bottleneck in the zinc ingot delivery.
  • the stroke of the sliding mechanism 8 transports the bar 2 from the conveyor 7 to the intermediate position and at the same time the bar 2 from the intermediate position in or on the holding device 6.
  • the holding device 6 lifts after loading with a bar 2 by not shown moving means the zinc ingot 2 from the transfer table 12 and tilts the bar 2 at the same time Direction metal bath 3.
  • the zinc ingot 2 is supported on the basket element 10 from.
  • the basket element 10 is immersed with the zinc ingot 2 in the liquid zinc in the metal bath 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Secondary Cells (AREA)
  • General Induction Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

The invention relates to a device (1) for inserting metal ingots (2) into a metal bath (3), in particular zinc ingots into a zinc bath, wherein the device (1) comprises feed means (4) with which an ingot (2) can be fed to the metal bath (3), and wherein the device (1) comprises heating means (5) with which the ingot (2) can be heated to a desired temperature before and/or after its feeding into the metal bath (3). In order to improve the process control, it is provided according to the invention that the heating means (5) comprise at least one independently operated heating element which can be operated independently of other system parts with which the device (1) cooperates.

Description

Vorrichtung zum Einbringen metallischer Barren in ein Metallbad Device for introducing metallic ingots into a metal bath
Die Erfindung betrifft eine Vorrichtung zum Einbringen metallischer Barren in ein Metallbad, insbesondere von Zinkbarren in ein Zinkbad, wobei die Vorrich- tung Zuführmittel aufweist, mit denen ein Barren dem Metallbad zugeführt werden kann, und wobei die Vorrichtung Heizmittel aufweist, mit denen der Barren vor und/oder während seiner Zuführung in das Metallbad auf eine gewünschte Temperatur aufgeheizt werden kann.The invention relates to a device for introducing metallic ingots into a metal bath, in particular from zinc ingots into a zinc bath, the device having feeding means with which a billet can be fed to the metal bath, and the device having heating means with which the ingot projects and / or heated to a desired temperature during its delivery into the metal bath.
In Feuerverzinkungsanlagen wird das zu verzinkende Band durch ein Metallbad mit einer flüssigen Zinklegierung geführt. Das dabei für die Beschichtung verwendete Zink wird hierdurch kontinuierlich aus dem Zinkbad ausgetragen. Daher muss Zink in das Bad nachgeführt werden, um einen konstanten Füllgrad des Zinkbades aufrechtzuerhalten.In hot-dip galvanizing plants, the strip to be galvanized is passed through a metal bath with a liquid zinc alloy. The zinc used for the coating is thereby continuously discharged from the zinc bath. Therefore, zinc must be added to the bath to maintain a constant degree of filling of the zinc bath.
Hierfür sind Chargiervorrichtungen bekannt, mit denen Metallbarren in den Behälter mit der Metallschmelze gefördert werden können. Dabei tritt in nachteiliger Weise auf, dass die Temperatur der Metallschmelze mit Zugabe neuen Barrenmaterials Schwankungen unterworfen ist. Der kalte zugeführte Barren kühlt durch Entzug von Wärme die Schmelze im Aufnahmebehälter ab, insbesondere im Bereich der Zugabestelle, so dass der Prozess der Beschichtung gestört werden kann. Ferner ist es nachteilig, dass auf diese Weise die Bildung von Zinkschlacke gefördert wird.For this purpose, charging devices are known with which metal billets can be conveyed into the container with the molten metal. In this case occurs disadvantageously that the temperature of the molten metal is subject to fluctuations with the addition of new ingot material. By removing heat, the cold supplied ingot cools the melt in the receptacle, in particular in the region of the addition point, so that the process of the coating can be disturbed. Furthermore, it is disadvantageous that the formation of zinc slag is promoted in this way.
Es ist deshalb bekannt, die dem Metallbad zuzuführende Schmelze zunächst in einem Vorschmelzbehälter aufzuschmelzen, der vom eigentlichen Beschich- tungsbad getrennt ist, und dann die insoweit temperierte Schmelze schlackenfrei dem Beschichtungsbad zuzugeben. Die Entfernung der Schlacke erfolgt im Vorschmelzbehälter. Nachteilig ist hierbei jedoch, dass der Einsatz eines Vor- schmelzbehälters relativ aufwändig ist; das System erfordert zusätzlich Platz und ist teuer. Um diese Nachteile zu vermeiden, ist es aus der EP 1 091 011 B1 bekannt geworden, die zuzugebenden Metallbarren vor der Zuführung in den Schmelzebehälter vorzuwärmen. Dies erfolgt so, dass die Wärme eines ohnehin für den Schmelztauchbeschichtungsprozess benötigten Ofens den zuzuführenden Bar- ren zugeleitet wird, um sie auf eine gewünschte Temperatur zu erwärmen. Dabei wird heiße Luft aus dem Ofen über ein Gebläse einem Wärmetauscher zugeleitet, der die Luft erhitzt, mit der die Barren dann aufgeheizt werden.It is therefore known to first melt the melt to be supplied to the metal bath in a premelting tank, which is separated from the actual coating bath, and then to add the thus tempered melt to the coating bath in a manner free of slag. The removal of the slag takes place in the premelting tank. The disadvantage here, however, that the use of a Vorschmelzbehälters is relatively expensive; the system requires extra space and is expensive. In order to avoid these disadvantages, it has become known from EP 1 091 011 B1 to preheat the metal ingots to be added before they are fed into the melt container. This is done in such a way that the heat of a furnace, which is in any case required for the hot dip coating process, is fed to the bars to be supplied, in order to heat them to a desired temperature. Hot air from the oven is fed via a blower to a heat exchanger, which heats the air, with which the ingots are then heated.
Eine ähnliche Lösung ist aus der JP 1128 1264 bekannt. Auch hier wird Wärme von einem Schmelzofen in Form heißer Luft auf die zuzuführenden Barren geleitet, die erst dann dem Metallbad zugeführt werden, wenn sie eine gewisse Temperatur aufweisen.A similar solution is known from JP 1128 1264. Again, heat is passed from a melting furnace in the form of hot air to the supplied billets, which are then supplied to the metal bath, if they have a certain temperature.
Nachteilig ist bei den vorbeschriebenen Verfahren, dass der Prozess relativ schwer zu kontrollieren ist. Über die Nutzung der (Ab-)Wärme eines Ofens nahe der Einbringvorrichtung für die Barren kann zwar Energie aus diesem Ofen genutzt werden. Allerdings ist der Wärmetauschprozess relativ träge, so dass die genaue und schnelle Aufwärmung der zuzuführenden Barren nicht problemlos möglich ist.A disadvantage of the above-described method that the process is relatively difficult to control. The use of the (waste) heat of a furnace near the ingot for the billets, although energy from this furnace can be used. However, the heat exchange process is relatively slow, so that the accurate and rapid heating of the supplied ingot is not easily possible.
Daher liegt der Erfindung die Aufgabe zugrunde, diesbezüglich Abhilfe zu schaffen und eine Vorrichtung zum Einbringen metallischer Barren in ein Metallbad vorzuschlagen, bei der dieser negative Effekt nicht auftreten kann. Die Vorrichtung soll sich dadurch auszeichnen, dass eine einfachere Prozessfüh- rung möglich ist und die benötigten Prozessparameter genauer und schneller regelbar sind.The invention is therefore based on the object to remedy this situation and to propose a device for introducing metallic ingots into a metal bath, in which this negative effect can not occur. The device should be characterized in that a simpler Prozeßfüh- tion is possible and the required process parameters are more accurate and faster controllable.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Heizmittel der Vorrichtung mindestens ein autark betriebenes Heizelement aufweisen, das unabhängig von anderen Anlagenteilen betrieben werden kann, mit denen die Vorrichtung zusammenwirkt. Dadurch, dass das vorgeschlagene Heizelement nicht auf eine Energiezufuhr von einem anderen Anlagenteil angewiesen ist, kann die Temperierung des zuzuführenden Barrens sehr viel schneller und präziser erfolgen, so dass die Prozessführung leichter wird.This object is achieved in that the heating means of the device have at least one independently operated heating element, which can be operated independently of other parts of the system with which the device interacts. The fact that the proposed heating element is not dependent on an energy supply from another part of the plant, the temperature of the supplied billet can be done much faster and more precise, so that the process is easier.
Bei dem Heizelement kann es sich um einen Gasbrenner oder um ein elektrisch betriebenes Element handeln; in letzterem Falle ist vor allem ein Induktionsheizelement geeignet.The heating element may be a gas burner or an electrically operated element; In the latter case, above all, an induction heating element is suitable.
Die Zuführmittel können eine Haltevorrichtung für mindestens einen Barren aufweisen, mit der der Barren so gehalten werden kann, dass er zumindest teilweise in das Metallbad eintaucht. Die Haltevorrichtung ist dabei bevorzugt mit Bewegungsmitteln ausgestattet, die sie zwischen einer ersten Position, in der sich der Barren außerhalb des Metallbades befindet, und einer zweiten Po- sition, in der sich der Barren zumindest teilweise innerhalb des Metallbades befindet, bewegen können. Die Bewegungsmittel der Haltevorrichtung können dabei so ausgebildet sein, dass sie eine kombinierte Hub- und Kippbewegung der Haltevorrichtung ausführen können. Damit kann der aufzuschmelzende Barren präzise so in das Metallbad eingefahren werden, dass ein gewünschter Grad des Aufschmelzens von metallischem Material stattfindet.The supply means may comprise a holding device for at least one ingot, with which the ingot can be held so that it at least partially immersed in the metal bath. In this case, the holding device is preferably equipped with movement means which it can move between a first position in which the ingot is located outside the metal bath and a second position in which the ingot is located at least partially inside the metal bath. The moving means of the holding device can be designed so that they can perform a combined lifting and tilting movement of the holding device. Thus, the ingot to be melted can be accurately retracted into the metal bath so that a desired degree of melting of metallic material takes place.
Bei einer solchen Lösung ist dann mit Vorteil vorgesehen, dass die Heizmittel auf dem Zuführmittel, insbesondere im Bereich der Haltevorrichtung, beweglich angeordnet sind.In such a solution is then advantageously provided that the heating means on the supply means, in particular in the region of the holding device, are arranged to be movable.
Es ist aber alternativ möglich, dass die Heizmittel im Bereich der Zuführmittel in Förderrichtung vor dem Metallbad ortsfest angeordnet sind. Die Heizmittel können dabei im Bereich eines Teils der Zuführmittel angeordnet sein, auf dem der Barren in horizontale Richtung gefördert wird. Um einen möglichst automatisierten Betrieb zu ermöglichen, hat die Vorrichtung bevorzugt Fördermittel zum vorzugsweise automatischen Fördern von Barren von einer Auflage- oder Lagerstation auf die Haltevorrichtung. Die Fördermittel können dabei einen Hubbalkenförderer und/oder einen Schiebemechanismus aufweisen. Die Fördermittel können auch zwei parallel angeordnete Haltevor- richtungen für Barren beschicken.However, it is alternatively possible that the heating means are arranged in the region of the supply means in the conveying direction in front of the metal bath stationary. The heating means may be arranged in the region of a part of the supply means, on which the ingot is conveyed in the horizontal direction. In order to enable as automated an operation as possible, the device preferably has conveying means for preferably automatically conveying bars from a support or storage station to the holding device. The conveying means may have a Hubbalkenförderer and / or a sliding mechanism. The conveying means can also feed two parallel bars holding devices.
Mit der vorgeschlagenen Vorrichtung ist es möglich, die Temperatur des dem Metallbad zuzuführenden Barrens schnell und exakt auf eine gewünschte Temperatur vorzuwärmen, so dass eine optimale Prozessführung erfolgen kann. Die Vorheizung erfolgt in präziser und ökonomischer Weise.With the proposed device, it is possible to quickly and accurately preheat the temperature of the bar to be supplied to the metal bath to a desired temperature, so that optimal process control can take place. Preheating is done in a precise and economical way.
Mit den vorgeschlagenen Maßnahmen ist es weiterhin möglich, die Barrenheizung in die Badspielgelregelung mit einzubeziehen. Eine Temperaturerhöhung der Vorheizung des Barrens fördert das Abschmelzen des Barrens. Hierdurch wird der Badspiegel erhöht. Umgekehrt führt eine Absenkung der Temperatur der Vorheizung zu einer Verringerung des Badspiegels.With the proposed measures, it is also possible to include the bar heater in the Badgelgelgelregelung with. An increase in the temperature of the preheating of the billet promotes the melting of the billet. This increases the bath level. Conversely, a reduction in the temperature of the preheating leads to a reduction of the bath level.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:In the drawings, embodiments of the invention are shown. Show it:
Fig. 1 in perspektivischer Darstellung eine Zinkbarrenchargiereinrichtung gemäß einer ersten Ausführungsform; und1 shows a perspective view of a zinc ingot charging device according to a first embodiment; and
Fig. 2 in perspektivischer Darstellung eine alternative Ausführungsform der Zinkbarrenchargiervorrichtung.Fig. 2 in perspective view an alternative embodiment of the Zinkbarrenchargiervorrichtung.
In Fig. 1 ist eine Vorrichtung 1 zum Einbringen von Zinkbarren 2 in ein Metallbad 3 dargestellt. Aus dem Metallbad 3 ragt in bekannter Weise ein Ofenrüssel 11 heraus, in dem das zu beschichtende Metallband (nicht dargestellt) geführt wird. Die Zuführung von Barren 2 in das Metallbad 3 erfolgt mit den dargestellten Zuführmitteln 4. Bestandteil der Zuführmittel 4 ist eine Haltevorrichtung 6, die den in das Metallbad 3 einzubringenden Barren 2 so hält, dass er in einem gewünschten Grade in das Bad 3 eintaucht und so abschmelzen kann.In Fig. 1, a device 1 for introducing zinc ingot 2 in a metal bath 3 is shown. From the metal bath 3 projects in a known manner, a furnace trunk 11, in which the metal strip to be coated (not shown) is guided. The feeding of ingot 2 into the metal bath 3 takes place with the feeding means 4 shown. A component of the feeding means 4 is a holding device 6, which holds the ingot 2 to be introduced into the metal bath 3 in such a way that it dips into the bath 3 to a desired degree and can thus melt off.
Ein wesentlicher Bestandteil der Vorrichtung 1 ist ein Heizmittel 5, das ein (nicht näher dargestellt) autark betriebenes Heizelement aufweist, das unabhängig von anderen Anlagenteilen betrieben werden kann, mit denen die Vorrichtung 1 zusammenwirkt. Vor allem weist das Heizelement eine eigene Energieversorgung auf, die nicht an andere Anlagenteile gekoppelt ist. Insbesondere wird nicht die Wärme eines anderen Ofens genutzt, um die Barren 2 aufzuwärmen.An essential part of the device 1 is a heating means 5, which has a (not shown in detail) independently operated heating element, which can be operated independently of other parts of the system with which the device 1 cooperates. Above all, the heating element has its own energy supply, which is not coupled to other parts of the system. In particular, the heat of another furnace is not used to warm the bars 2.
Als Heizelement kann ein Gasbrenner oder eine elektrische Heizvorrichtung eingesetzt werden. Bewährt hat sich insbesondere die Verwendung einer Induktionsheizung, mit der eine schnelle Erwärmung des Barrens 2 möglich ist.As a heating element, a gas burner or an electric heater can be used. In particular, the use of an induction heater, with which a quick heating of the billet 2 is possible, has proven to be useful.
Eine Besonderheit besteht darin, dass die Heizmittel 5 beweglich angeordnet sind. Wie in der Zusammenschau der beiden Chargiervorrichtungen 1 der Fig. 1 gesehen werden kann, macht das Heizmittel 5 die (Hub- und Kipp-)Bewegung der Haltevorrichtung 6 mit. Damit kann der Barren 2 bis zum Eintauchen in das Metallbad 3 genau temperiert gehalten werden. Die Heizmittel 5 sind also auf der Chargiervorrichtung mitbeweglich befestigt. Der Barren 2 kann konstant beheizt werden und kann auch noch während des Abschmelzvorgangs selber temperiert werden.A special feature is that the heating means 5 are arranged to be movable. As can be seen in the synopsis of the two charging devices 1 of Fig. 1, the heating means 5 makes the (lifting and tilting) movement of the holding device 6 with. Thus, the ingot 2 can be kept exactly tempered until immersed in the metal bath 3. The heating means 5 are thus fixed mitbeweglich on the charging device. The billet 2 can be heated constantly and can also be tempered during the Abschmelzvorgangs itself.
Eine andere Möglichkeit ist in Fig. 2 dargestellt. Dort sind die Heizmittel 5 stationär angeordnet, und zwar in dem Bereich, über den der Barren 2 horizontal auf den Zuführmitteln 4 geführt wird. Hierbei kann der Barren 2 in einer Warteposition aufgeheizt werden, während der vorangegangene Barren im Metallbad abschmilzt. Der so vorgeheizte Barren 2 reduziert bei seinem Eintauchen in das Metallbad die Temperaturdifferenz, die er ohne Vorheizung hervorrufen würde.Another possibility is shown in Fig. 2. There, the heating means 5 are arranged stationary, in the area over which the ingot 2 is guided horizontally on the feed means 4. Here, the ingot 2 can be heated in a waiting position, while the previous ingot melts in the metal bath. The thus preheated billet 2 reduced when immersed in the metal bath, the temperature difference that he would cause without preheating.
In den Figuren ist eine Anordnung gezeigt, bei der zwei Chargiervorrichtungen 1 seitlich neben dem Ofenrüssel 11 angeordnet sind. Die linke bzw. hintere Chargiervorrichtung taucht dabei gerade den Metallbarren 2 in das Metallbad 3 ein, so dass er abschmelzen kann. Die rechte bzw. vordere Chargiervorrichtung 1 hält den Barren 2 in einer noch nicht eintauchenden Stellung. Wie zu sehen ist, kann die Haltevorrichtung 6 zwischen zwei Position bewegt werden, nämlich zwischen einer ersten Position (rechts bzw. vorne), in der der Metallbarren 2 noch nicht in das Metallbad 3 eintaucht, und einer zweiten Position (links bzw. hinten), in der der Barren 2 eintaucht und abschmilzt. Die Halterung des Barrens 2 erfolgt dabei durch ein Korbelement 10.In the figures, an arrangement is shown in which two charging devices 1 are arranged laterally next to the furnace trunk 11. The left or rear Charging device dips just the metal bar 2 in the metal bath 3, so that it can melt. The right or front charging device 1 holds the bar 2 in a not yet dipping position. As can be seen, the holding device 6 can be moved between two positions, namely between a first position (right or front), in which the metal bar 2 is not yet immersed in the metal bath 3, and a second position (left or rear). in which the ingot 2 dips and melts. The holder of the billet 2 is effected by a basket element 10th
Die generelle Handhabung der Barren 2 ist aus der weiteren apparativen Aus- gestaltung gemäß der Figuren ersichtlich: Die Eingabe der Zinkbarren 2 erfolgt durch einen Gabelstapler an einer Auflage- oder Lagerstation 9, die sich am Ende eines Hubbalkenförderers 7 befindet. Die Barren 2 werden vorzugsweise von der Bedienungsseite her auf den als Schrittförderer ausgebildeten Hubbalkenförderer 7 aufgegeben. Durch die Förderbewegung des Hubbalkenförderers 7 werden die Zinkbarren 2 zur Anlagenmitte hin transportiert.The general handling of the ingot 2 can be seen from the further apparatus configuration according to the figures: The input of the zinc ingot 2 is carried out by a forklift at a support or storage station 9, which is located at the end of a lifting beam conveyor 7. The bars 2 are preferably abandoned from the operating side on the trained as a step conveyor Hubbalkenförderer 7. By the conveying movement of Hubbalkenförderers 7, the zinc ingot 2 are transported to the center of the plant.
Sind die Zinkbarren 2 am Ende des Hubbalkenförderers 7 angekommen, werden sie durch einen zugeordneten Schiebermechanismus 8 weitertransportiert; der Zinkbarren 2 wird jetzt in einem 90°-Winkel zum Zufuhrförderer 7 in Rich- tung Haltevorrichtung 6 geschoben. Als Transportfläche dient ein Überleittisch 12 mit einer Edelstahlplatte, über die der Barren 2 geschoben wird. Zwischen dem Förderer 7 und der Haltevorrichtung 6 befindet sich noch eine Zwischenposition. Diese dient zur Überbrückung des Abstandes zwischen dem Förderer 7 und der Haltevorrichtung 6 und als Speicher für den Fall eines Versorgungs- engpasses bei der Zinkbarrenanlieferung.Once the zinc ingots 2 have arrived at the end of the lifting beam conveyor 7, they are transported on by an associated slide mechanism 8; the zinc ingot 2 is now pushed at a 90 ° angle to the supply conveyor 7 in the direction of the holding device 6. As a transport surface is a transfer table 12 with a stainless steel plate over which the bar 2 is pushed. Between the conveyor 7 and the holding device 6 is still an intermediate position. This serves to bridge the distance between the conveyor 7 and the holding device 6 and as a store in the event of a supply bottleneck in the zinc ingot delivery.
Der Hub des Schiebemechanismus 8 transportiert den Barren 2 vom Förderer 7 auf die Zwischenposition und gleichzeitig den Barren 2 aus der Zwischenposition in oder auf die Haltevorrichtung 6. Die Haltevorrichtung 6 hebt nach der Be- Schickung mit einem Barren 2 durch nicht näher dargestellte Bewegungsmittel den Zinkbarren 2 vom Überleittisch 12 ab und kippt den Barren 2 gleichzeitig in Richtung Metallbad 3. Dabei stützt sich der Zinkbarren 2 auf dem Korbelement 10 ab. Im letzten Abschnitt des Hubweges wird das Korbelement 10 mit dem Zinkbarren 2 in das flüssige Zink im Metallbad 3 eingetaucht. The stroke of the sliding mechanism 8 transports the bar 2 from the conveyor 7 to the intermediate position and at the same time the bar 2 from the intermediate position in or on the holding device 6. The holding device 6 lifts after loading with a bar 2 by not shown moving means the zinc ingot 2 from the transfer table 12 and tilts the bar 2 at the same time Direction metal bath 3. Here, the zinc ingot 2 is supported on the basket element 10 from. In the last section of the stroke, the basket element 10 is immersed with the zinc ingot 2 in the liquid zinc in the metal bath 3.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
I Vorrichtung zum Einbringen metallischer Barren 2 metallischer Barren (Zinkbarren)I device for inserting metallic ingots 2 metallic ingots (zinc ingots)
3 Metallbad3 metal bath
4 Zuführmittel4 feeding means
5 Heizmittel5 heating means
6 Haltevorrichtung 7 Fördermittel (Hubbalkenförderer)6 holding device 7 conveying means (lifting bar conveyor)
8 Fördermittel (Schiebemechanismus)8 conveyor (sliding mechanism)
9 Auflage- oder Lagerstation9 support or storage station
10 Korbelement10 basket element
I 1 Ofenrüssel 12 Überleittisch I 1 Oven trunk 12 Transfer table

Claims

Patentansprüche: claims:
1. Vorrichtung (1 ) zum Einbringen metallischer Barren (2) in ein Metallbad (3), insbesondere von Zinkbarren in ein Zinkbad, wobei die Vorrichtung (1 )1. Device (1) for introducing metallic ingots (2) into a metal bath (3), in particular zinc ingots in a zinc bath, wherein the device (1)
Zuführmittel (4) aufweist, mit denen ein Barren (2) dem Metallbad (3) zugeführt werden kann, und wobei die Vorrichtung (1 ) Heizmittel (5) aufweist, mit denen der Barren (2) vor und/oder während seiner Zuführung in das Metallbad (3) auf eine gewünschte Temperatur aufgeheizt werden kann,Feed means (4), with which a bar (2) can be supplied to the metal bath (3), and wherein the device (1) heating means (5), with which the ingot (2) before and / or during its supply in the metal bath (3) can be heated to a desired temperature,
dadurch gekennzeichnet,characterized,
dass die Heizmittel (5) mindestens ein autark betriebenes Heizelement aufweisen, das unabhängig von anderen Anlagenteilen betrieben werden kann, mit denen die Vorrichtung (1 ) zusammenwirkt.in that the heating means (5) have at least one independently operated heating element which can be operated independently of other system parts with which the device (1) cooperates.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Heizelement ein Gasbrenner ist.2. Device according to claim 1, characterized in that the heating element is a gas burner.
3. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Heizelement ein elektrisch betriebenes Element ist.3. Device according to claim 1, characterized in that the heating element is an electrically operated element.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Heizelement ein Induktionsheizelement ist.4. Apparatus according to claim 3, characterized in that the heating element is an induction heating element.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Zuführmittel (4) eine Haltevorrichtung (6) für mindestens einen Barren (2) aufweisen, mit der der Barren (2) so gehalten werden kann, dass er zumindest teilweise in das Metallbad (3) eintaucht.5. Device according to one of claims 1 to 4, characterized in that the supply means (4) comprise a holding device (6) for at least one bar (2) with which the bar (2) can be held so that it at least partially immersed in the metal bath (3).
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Haltevorrichtung (6) mit Bewegungsmitteln ausgestattet ist, die sie zwischen einer ersten Position, in der sich der Barren (2) außerhalb des Metallbades (3) befindet, und einer zweiten Position, in der sich der Barren (2) zumindest teilweise innerhalb des Metallbades (3) befindet, bewegen können.6. The device according to claim 5, characterized in that the holding device (6) is equipped with movement means, which it is located between a first position in which the ingot (2) outside of the metal bath (3), and a second position, in the bar (2) is at least partially within the metal bath (3) can move.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Bewegungsmittel der Haltevorrichtung (6) so ausgebildet sind, dass sie eine kombinierte Hub- und Kippbewegung der Haltevorrichtung (6) ausführen können.7. The device according to claim 6, characterized in that the movement means of the holding device (6) are formed so that they can perform a combined lifting and tilting movement of the holding device (6).
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Heizmittel (5) auf dem Zuführmittel (4), insbesondere im Bereich der Haltevorrichtung (6), beweglich angeordnet sind.8. Device according to one of claims 1 to 7, characterized in that the heating means (5) on the supply means (4), in particular in the region of the holding device (6), are arranged to be movable.
9. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Heizmittel (5) im Bereich der Zuführmittel (4) in Förderrichtung vor dem Metallbad (3) ortsfest angeordnet sind.9. Device according to one of claims 1 to 7, characterized in that the heating means (5) in the region of the feed means (4) in the conveying direction in front of the metal bath (3) are arranged stationary.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Heizmittel (5) im Bereich eines Teils der Zuführmittel (4) angeordnet sind, auf dem der Barren (2) in horizontale Richtung gefördert wird.10. Apparatus according to claim 9, characterized in that in that the heating means (5) are arranged in the region of a part of the feed means (4) on which the ingot (2) is conveyed in the horizontal direction.
11. Vorrichtung nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass sie Fördermittel (7, 8) zum vorzugsweise automatischen Fördern von11. Device according to one of claims 5 to 10, characterized in that it conveying means (7, 8) for preferably automatic conveying of
Barren (2) von einer Auflage- oder Lagerstation (9) auf die Haltevorrichtung (6) aufweist.Bar (2) from a support or storage station (9) on the holding device (6).
12. Vorrichtung nach Anspruch 11 , dadurch gekennzeichnet, dass die Fördermittel (7, 8) einen Hubbalkenförderer (7) und/oder einen Schiebemechanismus (8) aufweisen. 12. The device according to claim 11, characterized in that the conveying means (7, 8) have a Hubbalkenförderer (7) and / or a sliding mechanism (8).
EP08715881A 2007-04-03 2008-02-20 Device for introducing metal bars into a metal bath Not-in-force EP2142874B1 (en)

Applications Claiming Priority (2)

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DE102007015964A DE102007015964A1 (en) 2007-04-03 2007-04-03 Device for introducing metallic ingots into a metal bath
PCT/EP2008/001310 WO2008119416A1 (en) 2007-04-03 2008-02-20 Device for introducing metal bars into a metal bath

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KR (1) KR20090107053A (en)
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AU (1) AU2008234219B2 (en)
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DE502008002219D1 (en) 2011-02-17
MX2009010545A (en) 2009-10-26
EP2142874B1 (en) 2011-01-05
RU2009140406A (en) 2011-05-10
KR20090107053A (en) 2009-10-12
TW200900533A (en) 2009-01-01
BRPI0808117A2 (en) 2014-06-17
DE102007015964A1 (en) 2008-10-09
JP2010523813A (en) 2010-07-15
CN101680716A (en) 2010-03-24
AU2008234219B2 (en) 2010-05-20
WO2008119416A1 (en) 2008-10-09
AU2008234219A1 (en) 2008-10-09
CA2679531A1 (en) 2008-10-09
US20100096785A1 (en) 2010-04-22
ATE494520T1 (en) 2011-01-15

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