EP2142874B1 - Device for introducing metal bars into a metal bath - Google Patents

Device for introducing metal bars into a metal bath Download PDF

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Publication number
EP2142874B1
EP2142874B1 EP08715881A EP08715881A EP2142874B1 EP 2142874 B1 EP2142874 B1 EP 2142874B1 EP 08715881 A EP08715881 A EP 08715881A EP 08715881 A EP08715881 A EP 08715881A EP 2142874 B1 EP2142874 B1 EP 2142874B1
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EP
European Patent Office
Prior art keywords
metal bath
bar
holding device
molten metal
ingot
Prior art date
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Not-in-force
Application number
EP08715881A
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German (de)
French (fr)
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EP2142874A1 (en
Inventor
Peter De Kock
Matthias Kretschmer
Holger Behrens
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SMS Siemag AG
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SMS Siemag AG
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Publication of EP2142874A1 publication Critical patent/EP2142874A1/en
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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 ingot into a zinc bath, wherein the device has feeding means with which a bar can be supplied to the metal bath, the device having heating means with which the ingot before and / or can be heated to a desired temperature during its supply into the metal bath and wherein the heating means comprise at least one independently operated heating element, which can be operated independently of other parts of the system, with which the device cooperates.
  • Such a device is from the US 5 643 528 A and from the US 3 721 519 A known. Similar devices show the DE 94 21 837U1 , the US 5,448,039 and the DE 100 33 657 A1 ,
  • 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 by removing heat, especially in the area of the addition point, so that the process of the coating can be disturbed.
  • 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 process control is possible and the required process parameters can be controlled more precisely and more quickly.
  • heating means are arranged movably on the feed.
  • 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 they can move between a first position in which the ingot is outside the metal bath, and a second position in which the ingot is at least partially within 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 are arranged movably on the supply means in the region of the holding device.
  • 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 useer 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.
  • a device 1 for introducing zinc ingot 2 into 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 in the synopsis of the two Chargérorrorcardien 1 the Fig. 1 can be seen, makes the heating means 5, 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 in Fig. 2 shown.
  • 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 is apparent from the further apparatus embodiment 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 Hubbalken makeupers 7.
  • the bars 2 are preferably abandoned from the operating side on the trained as a step conveyor Hubbalken makeuper 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 in a 90 ° angle to the feed conveyor 7 in the direction of 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 memory in the event of a supply shortage in the zinc ingot delivery.
  • the stroke of the sliding mechanism 8 transports the billet 2 from the conveyor 7 to the intermediate position and at the same time the billet 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 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.

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  • 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)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • General Induction Heating (AREA)
  • Secondary Cells (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Superconductors And Manufacturing Methods Therefor (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

Die Erfindung betrifft eine Vorrichtung zum Einbringen metallischer Barren in ein Metallbad, insbesondere von Zinkbarren in ein Zinkbad, wobei die Vorrichtung Zuführmittel aufweist, mit denen ein Barren dem Metallbad zugeführt werden kann, 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 und wobei die Heizmittel mindestens ein autark betriebenes Heizelement aufweisen, das unabhängig von anderen Anlagenteilen betrieben werden kann, mit denen die Vorrichtung zusammenwirkt.The invention relates to a device for introducing metallic ingots into a metal bath, in particular from zinc ingot into a zinc bath, wherein the device has feeding means with which a bar can be supplied to the metal bath, the device having heating means with which the ingot before and / or can be heated to a desired temperature during its supply into the metal bath and wherein the heating means comprise at least one independently operated heating element, which can be operated independently of other parts of the system, with which the device cooperates.

Eine solche Vorrichtung ist aus der US 5 643 528 A und aus der US 3 721 519 A bekannt. Ähnliche Vorrichtungen zeigen die DE 94 21 837U1 , die US 5 448 039 A und die DE 100 33 657 A1 .Such a device is from the US 5 643 528 A and from the US 3 721 519 A known. Similar devices show the DE 94 21 837U1 , the US 5,448,039 and the DE 100 33 657 A1 ,

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. The cold supplied ingot cools the melt in the receptacle by removing heat, especially in the area 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 Beschichtungsbad 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 Vorschmelzbehälters relativ autwändig ist; das System erfordert zusätzlich Platz und ist teuer.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 add the melt which has been kept at a controlled temperature to the coating bath in a manner free from slagging. The removal of the slag takes place in the premelting tank. The disadvantage here, however, that the use of a Vorschmelzbehälters is relatively autarchic; the system requires extra space and is expensive.

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 Barren 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.To avoid these disadvantages, it is from the EP 1 091 011 B1 become known to preheat the metal ingots to be added before feeding into the melt container. This is done so that the heat of a furnace, which is in any case required for the hot dip coating process, is fed to the billet to be fed in order to heat it 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 aufweise.A similar solution is from the JP 1128 1264 known. 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 when it has 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 Prozessführung 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 process control is possible and the required process parameters can be controlled more precisely and more quickly.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Heizmittel auf dem Zuführmittel beweglich angeordnet sind.This object is achieved in that the heating means are arranged movably on the feed.

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.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 Position, 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 Aufschmetzens 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. The holding device is preferably equipped with movement means, which they can move between a first position in which the ingot is outside the metal bath, and a second position in which the ingot is at least partially within 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 precisely inserted into the metal bath, that takes place a desired degree of smelting of metallic material.

Insbesondere ist vorgesehen, dass die Heizmittel auf dem Zuführmittel im Bereich der Haltevorrichtung beweglich angeordnet sind.In particular, it is provided that the heating means are arranged movably on the supply means in the region of the holding device.

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 Haltevorrichtungen für Barren beschicken.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:

Fig. 1
in perspektivischer Darstellung eine Zinkbarrenchargiereinrichtung gemäß einer ersten Ausführungsform; und
Fig. 2
in perspektivischer Darstellung eine alternative Ausführungsform der Zinkbarrenchargiervorrichtung.
In the drawings, embodiments of the invention are shown. Show it:
Fig. 1
a perspective view of a zinc ingot charging device according to a first embodiment; and
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 into 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 Chargienrorrichtungen 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 in the synopsis of the two Chargérorrorrichtungen 1 the Fig. 1 can be seen, makes the heating means 5, 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 in Fig. 2 shown. 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 Ausgestaltung 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 is apparent from the further apparatus embodiment 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 Hubbalkenförderers 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 Richtung 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 Versorgungsengpasses 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 in a 90 ° angle to the feed conveyor 7 in the direction of 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 memory in the event of a supply shortage 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 Beschickung 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 billet 2 from the conveyor 7 to the intermediate position and at the same time the billet 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 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

11
Vorrichtung zum Einbringen metallischer BarrenDevice for introducing metallic bars
22
metallischer Barren (Zinkbarren)metallic billet (zinc ingot)
33
Metallbadmetal
44
Zuführmittelfeeding
55
Heizmittelheating
66
Haltevorrichtungholder
77
Fördermittel (Hubbalkenförderer)Conveying means (lifting beam conveyor)
88th
Fördermittel (Schiebemechanismus)Conveying means (sliding mechanism)
99
Auflage- oder LagerstationSupport or storage station
1010
Korbelementbasket element
1111
Ofenrüsselfurnace snout
1212
Überleittischtransfer table

Claims (10)

  1. A device (1) for introducing metal bars (2) into a molten metal bath (3), wherein the device (1) features feeding means (4), by means of which a bar (2) can be fed to the molten metal bath (3), wherein the device (1) features heating means (5), by means of which the bar (2) can be heated to a desired temperature before and/or while it is fed into the molten metal bath (3), and wherein the heating means (5) feature at least one autarkic heating element that can be operated independently of other system components, with which the device (1) interacts,
    characterized in
    that the heating means (5) are movably arranged on the feeding means (4).
  2. The device according to Claim 1,
    characterized in
    that the heating element is a gas burner.
  3. The device according to Claim 1,
    characterized in
    that the heating element is an electrically operated element.
  4. The device according to Claim 3,
    characterized in
    that the heating element is an induction heating element.
  5. The device according to one of Claims 1 to 4,
    characterized in
    that the feeding means (4) feature a holding device (6) for at least one bar (2), by means of which the bar (2) can be held in such a way that it at least partially dips into the molten metal bath (3).
  6. The device according to Claim 5,
    characterized in
    that the holding device (6) is equipped with moving means that can move the holding device between a first position, in which the bar (2) is situated outside the molten metal bath (3), and a second position, in which the bar (2) is at least partially situated within the molten metal bath (3).
  7. The device according to Claim 6,
    characterized in
    that the moving means of the holding device (6) are realized in such a way that they can carry out a combined lifting and tilting movement of the holding device (6).
  8. The device according to one of Claims 5 to 7,
    characterized in
    that it features conveying means (7, 8) for conveying the bars (2) from a depositing or storage station (9) onto the holding device (6).
  9. The device according to Claim 8,
    characterized in
    that the conveying means (7, 8) feature a walking beam conveyor (7) and/or a pushing mechanism (8).
  10. The device according to one of Claims 5 to 9,
    characterized in
    that the heating means (5) are movably arranged on the feeding means (4) in the region of the holding device (6).
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)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
EP2142874A1 EP2142874A1 (en) 2010-01-13
EP2142874B1 true EP2142874B1 (en) 2011-01-05

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US (1) US20100096785A1 (en)
EP (1) EP2142874B1 (en)
JP (1) JP2010523813A (en)
KR (1) KR20090107053A (en)
CN (1) CN101680716A (en)
AT (1) ATE494520T1 (en)
AU (1) AU2008234219B2 (en)
BR (1) BRPI0808117A2 (en)
CA (1) CA2679531A1 (en)
DE (2) DE102007015964A1 (en)
MX (1) MX2009010545A (en)
RU (1) RU2009140406A (en)
TW (1) TW200900533A (en)
WO (1) WO2008119416A1 (en)

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CN102392206A (en) * 2011-11-11 2012-03-28 鞍钢新轧-蒂森克虏伯镀锌钢板有限公司 Method for adding zinc by zinc ingot premelting and controlling furnace nasal cavity scum in hot-dip galvanizing production line
TWI583459B (en) * 2015-05-25 2017-05-21 jia-long You Furnace material for long melting furnace
CN108088258B (en) * 2016-11-21 2022-07-15 吉达克精密金属科技（常熟）有限公司 Aluminum ingot feeding device
CN107101502B (en) * 2017-06-22 2022-11-29 河南科技大学 A induction furnace loading attachment for bar forging and pressing production
CN109668439B (en) * 2018-12-01 2020-06-30 台州市金美铝业股份有限公司 Feeding mechanism of aluminum bar homogenizing furnace
CN109628868A (en) * 2018-12-26 2019-04-16 中冶南方工程技术有限公司 Continuous galvanizing line automatic zincification ingot device
CN111455298B (en) * 2020-04-27 2022-09-06 中冶南方工程技术有限公司 Stepping storage table capable of positioning zinc ingots and automatic zinc ingot adding system

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DE102007015964A1 (en) 2008-10-09
ATE494520T1 (en) 2011-01-15
AU2008234219A1 (en) 2008-10-09
AU2008234219B2 (en) 2010-05-20
BRPI0808117A2 (en) 2014-06-17
CN101680716A (en) 2010-03-24
CA2679531A1 (en) 2008-10-09
DE502008002219D1 (en) 2011-02-17
MX2009010545A (en) 2009-10-26
TW200900533A (en) 2009-01-01
RU2009140406A (en) 2011-05-10
JP2010523813A (en) 2010-07-15
WO2008119416A1 (en) 2008-10-09
KR20090107053A (en) 2009-10-12
EP2142874A1 (en) 2010-01-13
US20100096785A1 (en) 2010-04-22

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