EP1563113A2 - Procede et dispositif de revetement par immersion en bain de fusion d'un boyau de metal - Google Patents

Procede et dispositif de revetement par immersion en bain de fusion d'un boyau de metal

Info

Publication number
EP1563113A2
EP1563113A2 EP03811347A EP03811347A EP1563113A2 EP 1563113 A2 EP1563113 A2 EP 1563113A2 EP 03811347 A EP03811347 A EP 03811347A EP 03811347 A EP03811347 A EP 03811347A EP 1563113 A2 EP1563113 A2 EP 1563113A2
Authority
EP
European Patent Office
Prior art keywords
container
metal
level
coating
coating metal
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
EP03811347A
Other languages
German (de)
English (en)
Other versions
EP1563113B1 (fr
Inventor
Bernhard Tenckhoff
Holger Behrens
Bodo Falkenhahn
Michael Zielenbach
Rolf Brisberger
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
Publication of EP1563113A2 publication Critical patent/EP1563113A2/fr
Application granted granted Critical
Publication of EP1563113B1 publication Critical patent/EP1563113B1/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
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in 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
    • C23C2/0035—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
    • 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
    • C23C2/14—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
    • C23C2/34—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
    • 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
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C23C2/523—Bath level or amount

Definitions

  • the invention relates to a method for hot-dip coating a metal strand, in particular a steel strip, in which the metal strand is passed at least in sections vertically through a container holding the molten coating metal at a predetermined conveying speed. Furthermore, the invention relates to a device for hot-dip coating a metal strand.
  • the activation of the band surface increases the affinity of these band surfaces for the surrounding atmospheric oxygen.
  • the strips are introduced into the dip coating bath from above in an immersion nozzle. Since the coating metal is in liquid form and you want to use the gravitation together with biasing devices to adjust the coating thickness, the subsequent processes, however, touch the strip until the coating completely solidifies. metal, the strip must be redirected in the vertical direction in the coating vessel. This happens with a roller that runs in the liquid metal. Due to the liquid coating metal, this role is subject to heavy wear and is the cause of downtimes and thus failures in production.
  • Metallstrands in the coating metal is provided here that during the passage of the metal strand, the molten coating material is held in a movement directed against the surface of the metal strand and is circulated with the exclusion of air.
  • the invention is therefore based on the object of providing a method and an associated device for hot dip coating a metal strand, with which it is possible to influence the parameters of the hot dip coating efficiently without necessarily passing through the metal strand to change the molten coating metal.
  • the achievement of this object by the invention is characterized in accordance with the method in that the dwell time of the metal strand in the molten coating metal is predetermined by controlling or regulating the level of the molten coating metal in the container.
  • the concept of the invention is based on the fact that the level of the molten coating metal in the coating container is used to specifically influence parameters that influence the quality of the hot-dip coating process. With this procedure it is possible to influence the coating quality without having to vary the conveying speed of the metal strand through the coating device.
  • a first development is based on the fact that the metal strand is led exclusively vertically through the molten coating metal and through a guide channel upstream of the container and that an electromagnetic field is generated in the region of the guide channel in order to retain the coating metal in the container by means of at least two inductors arranged on both sides of the metal strand ,
  • CVGL method Continuous Vertical Galvanizing Line
  • the conveying speed of the metal strand through the container is kept largely constant.
  • the device according to the invention for hot-dip coating a metal strand in which the metal strand is at least partially passed vertically through the container holding the molten coating metal, is characterized by means for controlling or regulating the level of the molten coating metal in the container as a function of a predetermined dwell time of the metal strand in the molten coating metal.
  • the device preferably has an upstream of the container
  • the means for controlling or regulating the level of the molten coating metal in the container have measuring means for measuring the level of the molten coating metal in the container and means for influencing the level which are connected to a control or regulating device.
  • the means for influencing the level of the molten coating metal have a drain for discharging molten coating metal from the container into a storage container and a pump for conveying molten coating metal from the storage container into the container.
  • the storage container is preferably arranged below the container.
  • the volume of the container is many times smaller than that of the storage container; it is particularly provided that the volume of the container is between 5 and 20% of that of the storage container.
  • FIG. 1 An embodiment of the invention is shown.
  • the single figure shows schematically a hot-dip coating device with a metal strand passed through it.
  • the device has a container 3 which is filled with molten coating metal 2.
  • molten coating metal 2 This can be zinc or aluminum, for example.
  • the metal strand 1 to be coated in the form of a steel strip passes the container 3 vertically upward in the conveying direction R. a given conveying speed v.
  • the metal strand 1 For the passage of the metal strand 1 through the container 3, it is open in the bottom area; here there is a guide channel 4. So that the molten coating metal 2 cannot flow down through the guide channel 4, there are two electromagnetic inductors 5 on both sides of the metal strand 1, which generate a magnetic field that causes volume forces in the liquid metal that the Counteracts gravity of the coating metal 2 and thus seals the guide channel 4 downwards.
  • the inductors 5 are two alternating field or traveling field inductors arranged opposite one another, which are operated in the frequency range from 2 Hz to 10 kHz and build up a transverse electromagnetic 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 (e.g. traveling field inductors) between 2 Hz and 2 kHz.
  • the level h of the molten coating metal 2 in the container 3 is actively influenced by suitable means and this is used specifically to influence the process parameters and thus the quality of the coating.
  • means 6 for controlling or regulating the height h of the level are provided, it being apparent from the figure that the level h varies within a wide range between a minimum level. h m j n and a maximum water level h ma ⁇ .
  • the dwell time t of the metal strand 1 in the coating metal 2 results from the current height h of the water level in the container 3 and the conveying speed v of the metal strand 1; this in turn gives rise to important influencing parameters for the hot dip coating process.
  • the means 6 for controlling or regulating the height h of the level consist first of all of a measuring means 7 with which the current level h can be measured.
  • the value measured by the measuring means 7 is fed to a control or regulating device 10.
  • This also receives the desired value of the dwell time t of the metal strand 1 in the coating metal 2.
  • the control or regulating device 10 can influence means 8, 9 for influencing the water level h, namely an outlet 8 with which the molten coating metal 2 is used can be drained from the container 3, and onto a speed-controlled pump 9, with which the coating metal 2 can be pumped into the container 3.
  • the desired or required level h can be maintained or controlled by the control or regulating device 10.
  • a supply container 11 is arranged under the container 3 for this purpose.
  • a pipe 12 connects the outlet 8 to the reservoir 11.
  • a pipe 13 is provided, in which the pump is arranged, with which coating metal 2 can be pumped from the reservoir 11 into the container 3.
  • the coating bath level is thus dynamically adjusted or regulated via the outlet 8 and the pump 9. It is thus possible to use the water level h as a manipulated variable for quality control of the coated metal strand 1.
  • the associated change in the dwell time t of the metal strand 1 in the coating metal 2 - at a constant conveying speed v - sets or adjusts the quality features of the metal strand 1 coated behind the coating device.
  • V conveying speed t dwell time h level of the molten coating metal in the container hmin minimum level hmax maximum level

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)

Abstract

La présente invention concerne un procédé de revêtement par immersion en bain de fusion d'un boyau de métal (1), notamment d'un boyau d'acier, le boyau de métal (1) passant au moins par parties, dans une direction verticale, par un réservoir (3) contenant le métal de revêtement en fusion (2), avec une vitesse de déplacement prédéterminée (v). Selon l'invention, pour agir sur la qualité du processus de revêtement, le temps de séjour (t) du boyau de métal (1) dans le métal de revêtement en fusion (2) est prédéterminé par commande ou régulation de la hauteur (h) du niveau de métal de revêtement en fusion (2) dans le réservoir (3). L'invention a également pour objet un dispositif de revêtement par immersion en bain de fusion d'un boyau de métal.
EP03811347A 2002-11-21 2003-10-06 Procede et dispositif de revetement par immersion en bain de fusion d'un boyau de metal Expired - Lifetime EP1563113B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10254306A DE10254306A1 (de) 2002-11-21 2002-11-21 Verfahren und Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
DE10254306 2002-11-21
PCT/EP2003/011080 WO2004046412A2 (fr) 2002-11-21 2003-10-06 Procede et dispositif de revetement par immersion en bain de fusion d'un boyau de metal

Publications (2)

Publication Number Publication Date
EP1563113A2 true EP1563113A2 (fr) 2005-08-17
EP1563113B1 EP1563113B1 (fr) 2008-02-27

Family

ID=32240231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03811347A Expired - Lifetime EP1563113B1 (fr) 2002-11-21 2003-10-06 Procede et dispositif de revetement par immersion en bain de fusion d'un boyau de metal

Country Status (17)

Country Link
US (1) US20060153992A1 (fr)
EP (1) EP1563113B1 (fr)
JP (1) JP4485955B2 (fr)
KR (1) KR101090094B1 (fr)
CN (1) CN100445416C (fr)
AT (1) ATE387518T1 (fr)
AU (1) AU2003276069B2 (fr)
BR (1) BR0316515B1 (fr)
CA (1) CA2506389C (fr)
DE (2) DE10254306A1 (fr)
ES (1) ES2298625T3 (fr)
MX (1) MXPA05005311A (fr)
MY (1) MY139905A (fr)
PL (1) PL212670B1 (fr)
RU (1) RU2338809C2 (fr)
TW (1) TWI334451B (fr)
WO (1) WO2004046412A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2344197C2 (ru) * 2003-02-27 2009-01-20 Смс Демаг Акциенгезелльшафт Способ и устройство для нанесения покрытий погружением в расплав на металлические ленты, в частности на стальные ленты
DE102005012296A1 (de) * 2005-03-17 2006-09-21 Sms Demag Ag Verfahren und Vorrichtung zum Entzundern eines Metallbandes
NZ575788A (en) * 2006-08-30 2012-03-30 Bluescope Steel Ltd Steel strip coated with aluminium, zinc, silicon alloy
RU2488644C2 (ru) * 2011-10-25 2013-07-27 Александр Александрович Кулаковский Устройство для нанесения покрытия на протяженное изделие
AT520084B1 (de) * 2017-10-03 2019-01-15 Primetals Technologies Austria GmbH Verfahren zum Betrieb einer Gieß-Walz-Verbundanlage und Gieß-Walz-Verbundanlage

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FR2556109B2 (fr) * 1983-08-29 1986-09-12 Comp Generale Electricite Dispositif pour deposer en regime continu une couche de silicium polycristallin sur un ruban de carbone
FR2592064B1 (fr) * 1985-12-23 1988-02-12 Elf Aquitaine Dispositif pour former un bain d'un materiau semi-conducteur fondu afin d'y faire croitre un element cristallin
DE4242380A1 (de) * 1992-12-08 1994-06-09 Mannesmann Ag Verfahren und Vorrichtung zum Beschichten der Oberfläche von strangförmigem Gut
AU689733B2 (en) * 1995-11-10 1998-04-02 Kawasaki Steel Corporation Method and apparatus for holding molten metal
CA2225537C (fr) * 1996-12-27 2001-05-15 Mitsubishi Heavy Industries, Ltd. Dispositif et methode de revetement metallique a chaud
DE19758140A1 (de) * 1997-12-19 1999-07-08 Mannesmann Ag Verfahren zum Erzeugen von Metallprodukten aus Verbundwerkstoff
DE10146791A1 (de) * 2001-09-20 2003-04-10 Sms Demag Ag Verfahren und Vorrichtung zum Beschichten der Oberfläche von strangförmigem metallischem Gut
DE10160949A1 (de) * 2001-12-12 2003-06-26 Sms Demag Ag System und Verfahren zum Beschichten der Oberfläche eines Metallbandes

Non-Patent Citations (1)

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Title
See references of WO2004046412A2 *

Also Published As

Publication number Publication date
US20060153992A1 (en) 2006-07-13
AU2003276069B2 (en) 2009-01-29
KR20050085016A (ko) 2005-08-29
CN100445416C (zh) 2008-12-24
EP1563113B1 (fr) 2008-02-27
MXPA05005311A (es) 2005-08-16
ES2298625T3 (es) 2008-05-16
MY139905A (en) 2009-11-30
DE50309275D1 (de) 2008-04-10
RU2005119289A (ru) 2006-02-10
WO2004046412A2 (fr) 2004-06-03
AU2003276069A1 (en) 2004-06-15
RU2338809C2 (ru) 2008-11-20
DE10254306A1 (de) 2004-06-03
ATE387518T1 (de) 2008-03-15
BR0316515B1 (pt) 2012-11-27
TWI334451B (en) 2010-12-11
CN1729309A (zh) 2006-02-01
CA2506389C (fr) 2011-09-13
JP2006508240A (ja) 2006-03-09
KR101090094B1 (ko) 2011-12-07
CA2506389A1 (fr) 2004-06-03
PL375258A1 (en) 2005-11-28
TW200408725A (en) 2004-06-01
PL212670B1 (pl) 2012-11-30
BR0316515A (pt) 2005-10-04
JP4485955B2 (ja) 2010-06-23
WO2004046412A3 (fr) 2004-07-29

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