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EP1639147A1 - Dispositif et procede de revetement par immersion d'une barre metallique - Google Patents

Dispositif et procede de revetement par immersion d'une barre metallique

Info

Publication number
EP1639147A1
EP1639147A1 EP04739678A EP04739678A EP1639147A1 EP 1639147 A1 EP1639147 A1 EP 1639147A1 EP 04739678 A EP04739678 A EP 04739678A EP 04739678 A EP04739678 A EP 04739678A EP 1639147 A1 EP1639147 A1 EP 1639147A1
Authority
EP
European Patent Office
Prior art keywords
metal
coating
container
vorschmelzbehalter
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.)
Granted
Application number
EP04739678A
Other languages
German (de)
English (en)
Other versions
EP1639147B1 (fr
Inventor
Hans-Georg Hartung
Bernhard Tenckhoff
Rolf Brisberger
Holger Behrens
Klaus Frommann
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
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 Demag AG filed Critical SMS Demag AG
Priority to PL04739678T priority Critical patent/PL1639147T3/pl
Publication of EP1639147A1 publication Critical patent/EP1639147A1/fr
Application granted granted Critical
Publication of EP1639147B1 publication Critical patent/EP1639147B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • 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
    • 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
    • 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
    • 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
    • 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
    • C23C2/26—After-treatment
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • 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
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • 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
    • C23C2/50—Controlling or regulating the coating processes

Definitions

  • the invention relates to a device and a method for hot-dip coating a metal strand, in particular a steel strip with Zn, Al, Zn-Al alloys, in which the metal strand can be passed vertically through a receiving the molten coating metal container and through an upstream guide channel, wherein On both sides of the guide channel electromagnetic inductors are arranged, which generate a magnetic field for the retention of the coating metal in the container, and wherein the container is supplied by a Vorschmelzbehalter with molten coating metal.
  • Known metal immersion coating systems for metal strips have a maintenance-intensive part, namely the coating vessel with the equipment located therein.
  • the surfaces of the metal strips to be coated must be cleaned prior to coating and activated for connection to the coating metal.
  • the strip is treated in a continuous furnace in a reducing atmosphere prior to coating. Since the oxide layers are previously chemically removed, the reducing heat process activates the surfaces so that they are metallically pure after the heat process. In doing so, the strip is heated to the temperature required for coating with zinc, aluminum or zinc-aluminum alloys.
  • solutions which provide a downwardly open coating vessel having in its lower region a guide channel of defined height for vertical tape feed-through upwards and for sealing has an electromagnetic shutter.
  • electromagnetic inductors that work with backward, pumping or constricting electromagnetic alternating or traveling fields that seal the coating vessel down.
  • an electromagnetic closure device is arranged below the coating vessel.
  • the container for the molten coating metal is associated with a Vorschmelzbehalter, wherein the container volume is smaller by a multiple than the Vorschmelzbehalter.
  • the container is connected for refilling or for emptying with the Vorschmelzbehalter via supply and discharge channels, wherein the molten coating material between the Vorschmelzbehalter and the coating container is complete with the completion of atmospheric oxygen.
  • the premelting container for the coating metal is arranged laterally of the actual coating container.
  • This arrangement of the premelting container is particularly favorable for new hot-dip coating systems which can be designed for optimum performance of the hot-dip coating process.
  • the invention is therefore based on the object to provide a way to convert existing conventional hot dip coating equipment so that the vertical coating process can be optimally performed, with maximum benefits to be drawn from the existing system.
  • Vorschmelzbehalter is located directly below the container and in particular the guide channel. It is preferably provided that the Vorschmelzbehalter is suitable for receiving a deflection roller arranged in the molten coating metal, so this is thus such a container which is suitable for the classical implementation of the hot dip coating process.
  • the container for the hot-dip coating together with the upstream guide channel is located directly above the conventional plant and there via its coating container, which acts as Vorschmelzbehalter; the coating container, which in the classical method has the deflection roller immersed in the coating metal, is therefore used as a premelting container for the vertical coating system.
  • the metal strand is conveyed through a furnace trunk coming from an oven in a feed direction, wherein the metal strand with at least one deflection roller, preferably with two Umlenkrolle guide rollers, deflected in the vertical direction and is supplied via at least one guide roller to the guide channel.
  • at least one deflection roller preferably with two Umlenkrolle guide rollers
  • the line of intersection of the extension of the metal strand in the feed direction with the extension of the metal strand in the vertical direction through the guide channel is below the level of the molten coating metal in Vorschmelzbehalter.
  • the end of the oven trunk and the lower end of the guide channel are connected to a gas-tight and heated roller chamber. It can further be provided that between the end of the oven trunk and the roller chamber a lock, in particular a roller lock, is arranged.
  • the apparatus further preferably has a controllable or controllable pump for pumping molten coating metal from the premelt box into the container.
  • a controllable or controllable drain may be provided for passing molten coating metal from the vessel into the premelting vessel. Lines between the container, the Vorschmelzbehalter, the pump or the drain can be designed to be heated.
  • a deflection roller can be arranged, which deflects the metal strand from the vertical direction.
  • This deflection roller is advantageously water-cooled in order to be able to manage with the cooling section above the coating vessel of the coating installation to be converted or modernized.
  • At least one of the existing pulleys and the guide rollers which are in contact with the metal strand can be provided with a ceramic coating which is not wettable by molten coating metal.
  • the method for hot-dip coating of the metal strand in the vertical coating process, in which the container is supplied by a Vorschmelzbehalter with molten coating metal, according to the invention is characterized in that for starting the coating process molten coating metal moving in the conveying direction metal strand from Vorschmelzbehalter in the initially empty container is encouraged.
  • an atmosphere with a very low dew point is produced before the start of the coating process in the roller chamber by applying a protective gas and setting a desired temperature in the roller chamber, which determines the adhesion of the coating metal to the surface of the roller Metallstranges favors.
  • Another development provides that the metal strand is fed to the guide channel with a temperature between 450 ° C and 530 ° C.
  • the level height of the coating metal in the container is controlled or regulated according to a predetermined value.
  • Vorschmelzbehalter and container can advantageously be done by means of the pump and the drain, a transfer of molten coating metal, the volume flow is substantially greater, preferably at least five times greater than the discharge of coating metal from the container through the metal strand.
  • the pre-fusing container can be supplied with new coating metal in solid form. From the Vorschmelzbehalter can, preferably periodically, impurities are removed.
  • an embodiment of the invention is shown. The single figure shows schematically the side view of a hot dip coating plant for coating a metal strand with coating metal.
  • the illustrated hot dip coating apparatus operates according to the vertical coating method, i. H. the metal strand 1 runs vertically upwards in the conveying direction R through a guide channel 4 and comes into contact with the molten coating metal 2, which is located in a container 3 and in the upper part of the guide channel 4.
  • this vertical coating plant is based on a retrofitted hot-dip coating plant, in which the classical melt-dip coating process (with deflection roller in the molten coating metal) is carried out.
  • the metal strand 1 enters a container 6 in a feed direction Z, in which molten coating metal 2 is located.
  • a deflection roller 7 deflects the metal strand 1 in the vertical direction V.
  • a blower 22 is arranged, which represents an "air knife", via which the layer thickness of the coating metal 2 is set on the metal strand 1.
  • a cooling section 23 is arranged, which cools the metal strand 1 together with the coating metal 2.
  • the two deflection rollers 10 and 11 are thus arranged so that the fitting line of the metal strand 1 in both the furnace trunk 9 and in the vertical part of the hot dip coating plant - in comparison with the original classical coating plant - is not changed.
  • the metal strand 1 does not enter the coating metal located in the container 6, but the metal strand 1 is deflected from the feed direction Z via the deflection rollers 10 and 11 in the vertical direction V, so that the metal strand 1 above the guide roller 10 and the guide rollers 24 may enter the guide channel 4.
  • Electromagnetic inductors 5 hold back the coating metal 2 located in the container 3, so that it can not run down through the guide channel 4.
  • the deflection roller 7 running in the original system in the molten coating metal 2 is shown in dashed lines, which indicates that it is no longer needed in the hot-dip coating system shown and consequently can be dismantled.
  • the metal strand 1 is first heated in an oven 8 and transported in the conveying direction R. It passes via a furnace trunk 9, which has the original hot-dip coating, via a roller lock 15 in a roller chamber 14 (preferably electrically heated), which connects the end of the oven trunk 9 and the lower end of the guide channel 4 gas-tight. In the roller chamber 14, the metal strand 14 is maintained at the temperature T set in the furnace.
  • the purpose of the double-roller lock 15 is to separate different protective gas atmospheres in the furnace 8 on the one hand and in the roller chamber 14 on the other hand and to prevent air from the roller chamber 14 from entering the furnace 8 in the event of a fault.
  • it fulfills an important procedural function when starting the hot-dip coating system: the sealing of the protective gas atmosphere in the roller chamber 14 makes it possible to achieve the low dew point required for the coating within a short time. This causes, within a very short time after filling the coating metal 2 into the container 3, a wall-free adhesion of the coating metal 2 on the metal strand 1 can be achieved, which represents an important advantage over the conventional hot dip coating process.
  • the lock 15 can be charged with nitrogen or another inert gas, so that the required sealing of the atmosphere of the roller chamber 14 takes place in relation to that in the furnace 8.
  • the roller chamber 14 is likewise filled with inert gas, preferably using nitrogen, forming gas (nitrogen with a maximum of 5% hydrogen) or a protective gas with low heat conductivity (eg argon).
  • the container 6 of the original hot-dip coating equipment serves as a pre-melt container, i. H. from it molten coating metal 2 is conveyed by a submersible in the melt controllable or controllable pump 16 and a heated line 19 into the container 3.
  • a controllable or controllable drain 17 is arranged, which consists of an actuatable plug (movable in the direction of the double arrow). Coating metal 2 can pass from the container 3 back into the premelting container 6 via the outflow 17 via a further heatable line 20.
  • a liquid-cooled deflection roller 21 is provided which deflects the metal strand from the vertical direction V and conveys it away from the melt coating installation in the conveying direction R.
  • the pump 16 is arranged laterally below the roller chamber 14; The pump 16 is immersed in the molten coating metal 2 in the Vorschmelzbehalter 6.
  • the volume of the pre-melt container 6 is a multiple of that of the container 3.
  • the quantity of molten coating metal 2 conveyed by the pump 16 from the premelting container 6 into the container 3 preferably remains substantially constant. This results in a constant circulation of coating metal, in which constantly fresh and contamination-free coating metal is conveyed from the premelting container 6 into the container 3.
  • the temperature control of the coating metal 2 takes place in Vorschmelzbehalter 6, the level of which 13 is continuously regulated or kept constant by the melting of blocks of solid coating metal.
  • the level 13 in Vorschmelzbehalter 6 is set so that in the event of a malfunction of the hot dip coating system, the entire coating metal 2 can be taken from the container 3 from Vorschmelzbehalter 6.
  • the "air knife” 22 and the cooling section 23 are arranged above the container 3, similar to the conventional hot-dip coating.
  • the air cooling section 23 is adjusted accordingly in terms of their performance because of the shorter available cooling length.
  • a water-cooled deflection pulley 21 can be used as an additional measure for cooling the metal strand 1.
  • the Vorschmelzbehalter 6 is provided with a charging device, not shown, by means of which solid blocks coating metal can be used in the Vorschmelzbehalter 6 for melting.
  • the cleaned metal strand 1 of hot rolled or cold rolled steel to be coated passes through the end zone of the furnace 8 and the furnace trunk 9 and through the sheath 15 of the roll chamber 14 initially supplied, wherein at the beginning of the coating process of the container 3 is initially empty, d. H. There is initially no coating metal 2 in it.
  • molten coating metal 2 is pumped from the premelting container 6 into the container 3 via the pump 16.
  • the electromagnetic inductors 5 were activated, so that the coating metal 2 filled in the container 3 is retained therein and can not leak down.
  • the desired level height h in the container 3 is maintained by appropriate control or regulation of both the pump 16 and the drain 17.
  • the level height h in the container 3 is thereby controlled or regulated by the pump 16 as much as possible by supplying molten coating metal 2 and by appropriately controlled or regulated discharge of molten coating metal 2 via the outflow 17 as a function of the belt speed and the desired coating quality.
  • the amount of molten coating metal 2 circulated through the pumping or the return flow between the premelting container 6 and the container 3 is a multiple of the amount of coating metal discharged as a coating by the metal strand 1 per unit of time.
  • By pumping molten coating metal 2 from Vorschmelzbehalter 6 in the container 3 is constantly fresh and clean coating metal supplied to the container 3. Impurities, in particular hard zinc, can be eliminated in the premelting vessel 6 and then removed from it at desired time intervals.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Coating With Molten Metal (AREA)

Abstract

L'invention concerne un dispositif de revêtement par immersion d'une barre métallique (1), notamment d'une bande métallique, dans lequel la barre métallique (1) est guidée verticalement au travers d'une cuve (3) contenant le métal de revêtement fondu (2), et d'un canal de guidage (4) monté en amont. Un aimant, notamment un inducteur électromagnétique (5) est logé dans la zone du canal de guidage (4), et produit un champ magnétique afin de retenir le métal de revêtement (2) dans la cuve (3), la cuve (3) étant alimentée en métal de revêtement fondu (2) par l'intermédiaire d'un contenant de pré-fusion (6). L'invention concerne également un procédé de revêtement par immersion faisant intervenir un tel dispositif. Pour permettre une transformation simple et techniquement idéale de dispositifs existants, le contenant de pré-fusion (6) est logé en-dessous du canal de guidage (4) selon l'invention.
EP04739678A 2003-06-27 2004-06-08 Dispositif et procede de revetement par immersion d'une barre metallique Expired - Lifetime EP1639147B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04739678T PL1639147T3 (pl) 2003-06-27 2004-06-08 Urządzenie do ogniowego powlekania pasma metalu i sposób ogniowego powlekania

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10329034 2003-06-27
DE10343648A DE10343648A1 (de) 2003-06-27 2003-09-20 Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges und Verfahren zur Schmelztauchbeschichtung
PCT/EP2004/006147 WO2005001152A1 (fr) 2003-06-27 2004-06-08 Dispositif et procede de revetement par immersion d'une barre metallique

Publications (2)

Publication Number Publication Date
EP1639147A1 true EP1639147A1 (fr) 2006-03-29
EP1639147B1 EP1639147B1 (fr) 2009-03-25

Family

ID=33553473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739678A Expired - Lifetime EP1639147B1 (fr) 2003-06-27 2004-06-08 Dispositif et procede de revetement par immersion d'une barre metallique

Country Status (18)

Country Link
US (1) US20070104885A1 (fr)
EP (1) EP1639147B1 (fr)
JP (1) JP4738331B2 (fr)
KR (1) KR20060018898A (fr)
CN (1) CN1813077A (fr)
AR (1) AR045431A1 (fr)
AT (1) ATE426687T1 (fr)
AU (1) AU2004252229B2 (fr)
BR (1) BRPI0411995A (fr)
CA (1) CA2530735A1 (fr)
DE (2) DE10343648A1 (fr)
ES (1) ES2325079T3 (fr)
MX (1) MXPA06000163A (fr)
MY (1) MY140336A (fr)
PL (1) PL1639147T3 (fr)
RU (1) RU2349677C2 (fr)
TW (1) TWI307726B (fr)
WO (1) WO2005001152A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029576A1 (de) * 2005-06-25 2007-01-04 Sms Demag Ag Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
DE102005033288A1 (de) * 2005-07-01 2007-01-04 Sms Demag Ag Verfahren und Vorrichtung zur Schmelztauchbeschichtung eines Metallbandes
DE102005030766A1 (de) * 2005-07-01 2007-01-04 Sms Demag Ag Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
KR100667173B1 (ko) 2005-09-02 2007-01-12 주식회사 한국번디 강관의 제조장치 및 제조방법
KR101081614B1 (ko) 2009-06-25 2011-11-09 현대하이스코 주식회사 강판의 위치 제어가 용이한 수직형 강판 코팅 장치
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CA2530735A1 (fr) 2005-01-06
AU2004252229A1 (en) 2005-01-06
MXPA06000163A (es) 2006-04-07
CN1813077A (zh) 2006-08-02
AU2004252229B2 (en) 2009-12-03
US20070104885A1 (en) 2007-05-10
JP2007506858A (ja) 2007-03-22
WO2005001152A1 (fr) 2005-01-06
JP4738331B2 (ja) 2011-08-03
TWI307726B (en) 2009-03-21
DE10343648A1 (de) 2005-01-13
DE502004009223D1 (de) 2009-05-07
AR045431A1 (es) 2005-10-26
EP1639147B1 (fr) 2009-03-25
RU2349677C2 (ru) 2009-03-20
TW200502431A (en) 2005-01-16
RU2006102361A (ru) 2006-06-27
PL1639147T3 (pl) 2009-08-31
ES2325079T3 (es) 2009-08-25
MY140336A (en) 2009-12-31
ATE426687T1 (de) 2009-04-15
KR20060018898A (ko) 2006-03-02
BRPI0411995A (pt) 2006-10-31

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