EP1563114B1 - Dispositif d'enduction par immersion a chaud d'une barre metallique - Google Patents

Dispositif d'enduction par immersion a chaud d'une barre metallique Download PDF

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Publication number
EP1563114B1
EP1563114B1 EP03815270A EP03815270A EP1563114B1 EP 1563114 B1 EP1563114 B1 EP 1563114B1 EP 03815270 A EP03815270 A EP 03815270A EP 03815270 A EP03815270 A EP 03815270A EP 1563114 B1 EP1563114 B1 EP 1563114B1
Authority
EP
European Patent Office
Prior art keywords
metal
flaps
coating
metal strand
guide channel
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.)
Expired - Lifetime
Application number
EP03815270A
Other languages
German (de)
English (en)
Other versions
EP1563114A2 (fr
Inventor
Rolf Brisberger
Bodo Falkenhahn
Holger Behrens
Michael Zielenbach
Bernhard Tenckhoff
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 Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1563114A2 publication Critical patent/EP1563114A2/fr
Application granted granted Critical
Publication of EP1563114B1 publication Critical patent/EP1563114B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • 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
    • C23C2/0036—Crucibles
    • C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
    • C23C2/00362—Details related to seals, e.g. magnetic means

Definitions

  • the invention relates to a device for hot dip coating a metal strand, in particular a steel strip, in which the metal strand is passed vertically through a container receiving the molten coating metal and through an upstream guide channel, with at least two on both sides of the metal strand in the region of the guide channel arranged inductors for generating an electromagnetic Field for retaining the coating metal in the container.
  • the belts are introduced from above into the dip-coating bath in a plunger. Since the coating metal is in liquid form and one would like to use the gravitation together with blowers for adjusting the coating thickness, but the subsequent processes prohibit belt contact until complete solidification of the coating metal, the tape in the coating vessel in vertical Direction be redirected. This happens with a roller that runs in liquid metal. Due to the liquid coating metal, this roller is subject to heavy wear and is the cause of downtimes and thus failures in production.
  • Such a solution is for example from the EP 0 673 444 B1 known.
  • An electromagnetic closure for sealing the coating vessel down is also the solution according to the WO 96/03533 or the one according to the JP 5086446 one.
  • the JP 2000273602 A discloses below the guide channel, a drip pan to receive coating metal, which runs down through the guide channel. This is led to a container, from where it is returned to the coating bath via a pump. Again, no specific and specific information is given as discontinued coating metal to be collected.
  • the EP 0 855 450 B1 deals more closely with the question of how the tightness of the lower portion of the guide channel can be ensured.
  • various alternative solutions are disclosed here.
  • two slides which are arranged on both sides of the metal strand, are moved perpendicular thereto to the surface of the metal strand.
  • the sliders act as stoppers and are held in contact with the metal strand as needed to prevent liquid leakage down the guide channel.
  • a relatively complex control of the slide is required to ensure its function.
  • Another embodiment provides that a conveyor belt is used, which promotes exiting coating metal from the area below the guide channel into a collecting container.
  • this solution is very complicated and involves the risk that the band clogged over time with coating metal and thus can no longer perform its function.
  • a third alternative solution for preventing the escape of molten coating metal provides a gas nozzle system.
  • a gas flow is directed from below onto the guide channel, the emerging coating metal tear up and thus seal the opening down.
  • the invention has for its object to provide a device for hot dip coating a metal strand, with which it is possible to ensure reliable operation of the system in critical operating conditions in a simple manner, for example, when the power supply of the inductors is interrupted.
  • the solution of this problem by the invention is characterized by at least two on both sides of the metal strand and below the guide channel and designed as diessiersleitbleche flaps, either in an open position in which they have no contact with the metal strand, or in a closed position in which they are placed on the metal strand, are positionable.
  • the concept of the invention is therefore based on the fact that, by means of two flaps which can be placed against the metal strand, which are arranged below the guide channel, if necessary, that is to say, for example, in the event of a power failure in which the inductors are no longer working, the molten coating metal flowing out of the guide channel is collected can be so that no damage to the coating device or no economic loss occurs.
  • a first development is based on the fact that the flaps are arranged pivotable about an axis of rotation; the axis of rotation is preferably arranged parallel to the plane of the metal strand and perpendicular to the conveying direction of the metal strand.
  • the flaps can be equipped with manual actuating means, in particular for pivoting about the axis of rotation; Alternatively, you can the flaps are in communication with pneumatic actuators or with hydraulic actuators.
  • each flap has a collecting area for molten coating metal. It has proven to be particularly advantageous if the collecting area is fluidly connected to a feed tank for molten coating metal.
  • the storage container is preferably arranged below the flaps. The fluidic connection between collecting area and storage tank can be formed by a pipe section.
  • FIG. 1 An embodiment of the invention is shown.
  • the single figure shows schematically a hot-dip coating device with a guided through this metal strand.
  • the device has a container 3 which is filled with molten coating metal 2.
  • molten coating metal 2 This may be, for example, zinc or aluminum.
  • To be coated metal strand 1 in the form of a steel strip passes through the container 3 in the conveying direction R vertically upwards. It should be noted at this point that it is also possible in principle that the metal strand 1, the container 3 passes from top to bottom. For the passage of the metal strand 1 through the container 3, this is open in the bottom area; Here is an exaggerated large illustrated guide channel. 4
  • the molten coating metal 2 can not flow down through the guide channel 4, located on both sides of the metal strand 1, two electromagnetic inductors 5, which generate a magnetic field, which counteracts the gravitational force of the coating metal 2 and thus seals the guide channel 4 downwards.
  • the inductors 5 are two oppositely arranged alternating field or traveling field inductors which are in the frequency range from 2 Hz to 10 kHz are operated and establish an electromagnetic transverse field perpendicular to the conveying direction R.
  • the preferred frequency range for single-phase systems (AC field inductors) is between 2 kHz and 10 kHz, that for multi-phase systems (eg traveling field inductors) between 2 Hz and 2 kHz.
  • two flaps 6 are arranged below the guide channel 4 on both sides of the metal strand 1.
  • the flaps 6 can assume an open position A, in which they have no contact with the metal strand 1. This is shown in the right half of the figure. You can also take a closed position B, in which they are applied to the metal strand 1; this position is illustrated in the left half of the figure.
  • the open position A corresponds to the normal operation of the coating system.
  • the inductors 5 hold back the closed coating metal 2 in the guide channel 4, so that the flaps 6 do not have to perform any function.
  • the flaps 6 are pivotable about an axis of rotation 7 which is perpendicular to the plane of the drawing.
  • actuating means not shown, are provided which, if necessary, so in particular in case of power failure, the folding of the flaps 6 from the open position A to the closed position B accomplish.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Claims (10)

  1. Dispositif pour le revêtement par immersion d'un brin métallique (1), en particulier d'une bande en acier, dans lequel le brin métallique (1) est guidé verticalement dans un récipient (3) contenant le métal de revêtement (2) fondu, et dans un canal de guidage (4) disposé en amont, avec au moins deux inducteurs (5) disposés des deux côtés du brin métallique (1) au niveau du canal de guidage (4) pour la production d'un champ électromagnétique destiné à retenir le métal de revêtement (2) dans le récipient (3), caractérisé par au moins deux clapets (6) disposés des deux côtés du brin métallique (1) et sous le canal de guidage (4) et réalisés sous forme de tôles de guidage du liquide, qui sont positionnables, au choix, dans une position d'ouverture (A), dans laquelle ils ne sont pas en contact avec le brin métallique (1) ou dans une position de fermeture (B) dans laquelle ils sont placés contre le brin métallique (1 ).
  2. Dispositif selon la revendication 1, caractérisé en ce que les clapets (6) sont disposés de manière à pouvoir pivoter autour d'un axe de rotation (7).
  3. Dispositif selon la revendication 2, caractérisé en ce que l'axe de rotation (7) est disposé parallèlement au plan du brin métallique (1) et perpendiculairement au sens de transport (R) du brin métallique (1).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les clapets (6) sont équipés de moyens d'actionnement manuels, en particulier pour le pivotement autour de l'axe de rotation (7).
  5. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les clapets (6) sont raccordés à des moyens d'actionnement pneumatiques, en particulier pour le pivotement autour de l'axe de rotation (7).
  6. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les clapets (6) sont raccordés à des moyens d'actionnement hydrauliques, en particulier pour le pivotement autour de l'axe de rotation (7).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que chaque clapet (6) présente une zone de collecte (8) pour le métal de revêtement fondu (2).
  8. Dispositif selon la revendication 7, caractérisé en ce que la zone de collecte (8) est raccordée par une voie de fluides avec un réservoir (9) pour le métal de revêtement fondu (2).
  9. Dispositif selon la revendication 8, caractérisé en ce que le réservoir (9) est disposé sous les clapets (6).
  10. Dispositif selon la revendication 8 ou 9, caractérisé en ce que le raccordement par une voie de fluides entre la zone de collecte (8) et le réservoir (9) est formé par une section tubulaire (10).
EP03815270A 2002-11-15 2003-10-18 Dispositif d'enduction par immersion a chaud d'une barre metallique Expired - Lifetime EP1563114B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10253234A DE10253234A1 (de) 2002-11-15 2002-11-15 Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
DE10253234 2002-11-15
PCT/EP2003/011577 WO2004067795A2 (fr) 2002-11-15 2003-10-18 Dispositif d'enduction par immersion à chaud d'une barre métallique

Publications (2)

Publication Number Publication Date
EP1563114A2 EP1563114A2 (fr) 2005-08-17
EP1563114B1 true EP1563114B1 (fr) 2008-07-30

Family

ID=32185696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03815270A Expired - Lifetime EP1563114B1 (fr) 2002-11-15 2003-10-18 Dispositif d'enduction par immersion a chaud d'une barre metallique

Country Status (8)

Country Link
EP (1) EP1563114B1 (fr)
AT (1) ATE403017T1 (fr)
AU (1) AU2003303292A1 (fr)
DE (2) DE10253234A1 (fr)
ES (1) ES2309401T3 (fr)
MY (1) MY131243A (fr)
TW (1) TWI290590B (fr)
WO (1) WO2004067795A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208578A1 (de) * 1992-03-13 1993-09-16 Mannesmann Ag Verfahren zum beschichten der oberflaeche von strangfoermigem gut
CA2225537C (fr) * 1996-12-27 2001-05-15 Mitsubishi Heavy Industries, Ltd. Dispositif et methode de revetement metallique a chaud
JPH1143754A (ja) * 1997-07-23 1999-02-16 Nisshin Steel Co Ltd 溶融めっき金属の流下防止機構を備えた空中ポット
DE10212436B4 (de) * 2002-03-21 2005-03-03 Sms Demag Ag Vorrichtung zur Behandlung von strangförmigem metallischen Gut und ihre Verwendung

Also Published As

Publication number Publication date
DE10253234A1 (de) 2004-05-27
DE50310259D1 (de) 2008-09-11
WO2004067795A3 (fr) 2004-12-29
EP1563114A2 (fr) 2005-08-17
ATE403017T1 (de) 2008-08-15
TW200412377A (en) 2004-07-16
AU2003303292A1 (en) 2004-08-23
ES2309401T3 (es) 2008-12-16
WO2004067795A2 (fr) 2004-08-12
TWI290590B (en) 2007-12-01
AU2003303292A8 (en) 2004-08-23
MY131243A (en) 2007-07-31

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