EP1504135B1 - Beschichtungsvorrichtung - Google Patents

Beschichtungsvorrichtung Download PDF

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Publication number
EP1504135B1
EP1504135B1 EP03749878A EP03749878A EP1504135B1 EP 1504135 B1 EP1504135 B1 EP 1504135B1 EP 03749878 A EP03749878 A EP 03749878A EP 03749878 A EP03749878 A EP 03749878A EP 1504135 B1 EP1504135 B1 EP 1504135B1
Authority
EP
European Patent Office
Prior art keywords
guide
coating
metal strip
guide magnet
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.)
Expired - Lifetime
Application number
EP03749878A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1504135A2 (de
Inventor
Wilfried PLÄTZER
Ernst-Werner Schmidt
Alireza Kouscheschi
P. Klaus Becker
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.)
Band Zink GmbH
Original Assignee
Band Zink GmbH
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 Band Zink GmbH filed Critical Band Zink GmbH
Publication of EP1504135A2 publication Critical patent/EP1504135A2/de
Application granted granted Critical
Publication of EP1504135B1 publication Critical patent/EP1504135B1/de
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
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • 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
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C23C2/524—Position of the substrate

Definitions

  • the invention relates to a coating device for coating a metal strip in a melt of a coating metal.
  • Coating devices for metal strip coating are for example, for galvanizing metal strips and metal sheets used.
  • the metal strip is characterized by an approx. 450 ° C pulled hot molten zinc:
  • the metal band dips below continuously into the molten zinc, is replaced by a rotating Wave in the melt upwards deflected and runs back up out of the molten zinc.
  • the metal band lies when passing through the Zinkachmelze with its one side over a certain length on the rotating shaft over the entire surface and with a certain pressure on. This will be the already attached zinc coating on the relevant page Part of the metal strip partially pressed again. Also by stabilizing rollers and other roles over which the coated Metal band runs, the still liquid zinc coating is undesirable changed.
  • the object of the invention is to provide a coating device improved coating of a metal strip in a melt to create a coating metal.
  • the coating device is the Guiding, deflecting and / or stabilizing the metal strip in the Melt provided a metal strip guiding device, the as a magnetic guide with at least one electrical guide magnet for contactless guidance of the metal strip in the Melt is formed.
  • the metal strip is in the melt the non-magnetic coating metal guided without contact, i.e. without rollers, waves, etc., but alone through the Magnetic field generated by the guide magnet, the approximately acts perpendicular to the metal strip plane.
  • the non-contact Guiding the metal strip in the melt becomes the coating of the metal strip with the liquid coating metal no longer changed by roles, waves etc., so that on both sides of the metal band an approximately similar Coating the metal strip with the coating metal is realized.
  • the electric guide magnet in the melt of the coating metal is such arranged and controlled that the metal strip in the melt is diverted. By avoiding a wave in the Melting will be the problems of shaft bearing in a molten metal avoided.
  • a guide magnet housing is provided, in which the guide magnet is arranged and that of a non-magnetic Material whose melting point is above 600 ° C lies.
  • the guide magnet housing is the guide magnet encapsulated in the melt of the coating metal and before the high temperatures and the chemically aggressive coating metal melt protected.
  • the guide magnet housing for example be designed as a stainless steel housing.
  • two are opposite one another Guide magnet housing with electrical guide magnets provided, wherein the guide magnet housing between form a continuous metal band guide gap.
  • the guide magnet housing between form a continuous metal band guide gap.
  • On both sides of the metal band are thus guide magnets arranged so that the metal strip is vertical in both directions to the metal band ground plane of the respective guide magnet can be attracted.
  • the guide gap between the two guide magnet housings arcuate, so that the metal band is deflected in the guide gap.
  • the metal strip is over a curved path in the coating metal melt diverted without being in this area to have a big game. This will be a strong flapping motion of the metal strip in the molten metal avoided.
  • the guide device a sensor for determining the distance of the metal strip from the guide magnet.
  • a control device provided the strength of the guide magnet generated magnetic field depending on the .dem with the sensor determined distance of the metal strip from the guide magnet controls. In this way, the distance of the metal strip approximately from the guide device or the guide magnet kept constant. Deviations from the nominal distance of the metal strip from the guide device or the guide magnet be detected by the sensor immediately and by appropriate Control of the electric guide magnet balanced.
  • a gas supply is provided, with which the Guide magnet housing with cooling gas for cooling the guide magnet is supplied.
  • the trained as an electromagnet guide magnet has a better at low working temperatures Efficiency than at higher temperatures, i. that generated Magnetic field is stronger at low working temperatures.
  • By cooling the efficiency of the guide magnet improved so used a smaller guide magnet can be.
  • the cooling gas a lower Overpressure relative to the static pressure of the coating metal melt be generated in the guide magnet housing, so that at a leakage of the guide magnet housing cooling gas flows out, but no liquid coating metal in the Guide magnet housing can penetrate. That way Serious damage to the guide device avoided.
  • a gas pressure sensor be provided for detecting gas leakage.
  • This can For example, be a pressure sensor that controls the gas pressure within of the guide magnet housing detected. A pressure drop in the housing would indicate a leakage of the guide magnet housing indicate damage to the guide magnet housing detected early and greater damage can be avoided.
  • the guide magnet housing in the region of the metal band guide gap coated with an emergency coating be formed, for example, as a ceramic coating can be.
  • an emergency coating for example, as a ceramic coating can be.
  • the guide device can be used as a deflection device, as a stabilization device or as a combined diversion and stabilizing device may be formed.
  • a cleaning device provided for cleaning the guide gap.
  • the cleaning device may have a scraper attached to a Schaberyak is attached and by the Schaberzug by the Guide gap is pulled through. Through the cleaning device becomes the guide magnet housing in the area of the guide gap cleaned, i. Slag formations and other deposits scraped on the housing and led out of the guide gap.
  • the guide can rope or ribbon-like design be and consists of a non-magnetic material.
  • FIG. 1 shows a cross section of a coating device 10 shown, the coating of a metal strip 12 with the Coating metal of the melt 14 is used.
  • the coating metal is zinc, but it can also be another metal that in terms of its magnetic properties for the described Coating device 10 is suitable.
  • the following is of non-magnetic coating metals spoken.
  • the surfaces of both Sides of the metal band 12 with a thin layer of zinc Mistake In the coating apparatus 10, the surfaces of both Sides of the metal band 12 with a thin layer of zinc Mistake.
  • the molten zinc 14 has a temperature of 450 - 470 ° C.
  • the metal strip 12 is at an angle of 30-45 Degree to the vertical introduced into the melt 14 and through a guide device 16 is deflected upward, so that the Metal strip 12 'vertically upward from the melt 14 again is led out.
  • the guide device 16th is by two pivot arms 18th held as shown in Figure 2.
  • the pivot arms 18 are pivotally mounted above the melt 14, so that the guide device 16 if necessary for maintenance or repair the melt 14 can be swung out. Possibly also the arms 18 together with the guiding device 16 lifted out of the melt 14 by a crane.
  • the guide device 16 is of two guide magnet housings 20,22 formed between them a continuous metal band guide gap 24 form.
  • the two guide magnet housings 20,22 are laterally by bolted or welded holding parts 25,26 held together.
  • the holding parts 25,26 each have a pin which in a respective Holding opening of the pivot arms 18 is inserted.
  • a supply pipe 28,29 is attached. Through the supply pipes 28,29 the housings 20,22 supplied a cooling gas and the heated cooling gas from the housings 20,22 dissipated. Furthermore, the supply pipes contain 28.29 electrical signal and control lines.
  • the guide device 16 is functionally divided into a deflection member 30 and in a stabilization part 32.
  • the guide gap 24 is arcuate educated.
  • the guide gap 24 is rectilinearly vertical educated. While in the region of the deflection part 30, the metal strip 12 is deflected by 135 - 150 degrees, the metal band becomes 12 in the region of the stabilization part 32 with respect to its horizontal Flapping movements stabilizes and calms down.
  • Both guide magnet housings 20,22 contain a plurality of electric guide magnet 34 through which the metal strip 12th always held approximately in the middle of the guide gap 24 becomes.
  • the illustrated arrows in the guide magnets give the Direction of the magnetic force acting on the metal strip.
  • the Holding parts 25, 26 form magnetic conclusions for the guide magnets.
  • a plurality of sensors 36 are provided, the determination of the Distance of the metal strip 12 from the respective guide magnet 34 and serve from the middle position in the guide gap 24.
  • the electromagnetic guide magnets 34 are dependent from the distance signals of the sensors 36 by a Control device 38 controlled such that the metal strip 12th always located approximately in the middle of the guide gap 24.
  • a gas supply 40 supplies the guide magnet housings 20, 22 with the cooling gas.
  • the cooling gas is preferably nitrogen used.
  • the two housings 20,22 In the region of the guide gap 24, the two housings 20,22 a ceramic runflat coating on, in case of failure the guide magnet 34 an emergency running property of the guide device 16 to ensure. This will be in case of failure of Guide magnets 34, a destruction of the guide device 16th prevented.
  • FIG. 3 shows the coating device 10 of FIGS and 2 supplemented by a cleaning device 50.
  • the cleaning device 50 is essentially formed by two in closed endless scraper trains 52, on both sides of the metal strip 12 passed through the guide gap 24 are and run back outside the guide gap 24. Both Scraper trains 52 are each through one above the melt arranged drive roller 54 driven. On every scraper train 52, a scraper element 56 is arranged in each case, the fixed the scraper train 52 is attached. At both guide slot openings each ceramic inserts 58 are provided through which the Schaberman 52 are deflected, without thereby a significant Wear on the guide magnet housings 20, 22nd occurs.
  • the two drive rollers 54 In opposite directions by a corresponding drive each other set in motion. This causes the two to run Schaberztige 52 with entrainment of the two scraper elements 56 of top down through the guide gap 24.
  • the scraper elements 56 scrape in the guide gap 24 of the two each other opposite housing walls slag and other deposits and carry them out of the guide gap 24. This way is a simple and efficient cleaning device realized.

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)
  • Coating Apparatus (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Seal Device For Vehicle (AREA)
  • Glass Compositions (AREA)
EP03749878A 2002-05-11 2003-05-08 Beschichtungsvorrichtung Expired - Lifetime EP1504135B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20207446U 2002-05-11
DE20207446U DE20207446U1 (de) 2002-05-11 2002-05-11 Beschichtungsvorrichtung
PCT/EP2003/004822 WO2003095694A2 (de) 2002-05-11 2003-05-08 Beschichtungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1504135A2 EP1504135A2 (de) 2005-02-09
EP1504135B1 true EP1504135B1 (de) 2005-09-07

Family

ID=28685422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03749878A Expired - Lifetime EP1504135B1 (de) 2002-05-11 2003-05-08 Beschichtungsvorrichtung

Country Status (9)

Country Link
US (1) US20050208226A1 (ja)
EP (1) EP1504135B1 (ja)
JP (1) JP2005525233A (ja)
KR (1) KR20050006245A (ja)
CN (1) CN100402692C (ja)
AT (1) ATE304064T1 (ja)
AU (1) AU2003232736A1 (ja)
DE (2) DE20207446U1 (ja)
WO (1) WO2003095694A2 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005014878A1 (de) * 2005-03-30 2006-10-05 Sms Demag Ag Verfahren und Vorrichtung zur Schmelztauchbeschichtung eines Metallbandes
JP5584526B2 (ja) * 2010-06-21 2014-09-03 三菱日立製鉄機械株式会社 溶融金属めっき設備の電磁石制振装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731212A (en) * 1953-02-13 1956-01-17 Richard S Baker Polyphase electromagnet strip guiding and tension device
GB1351125A (en) * 1970-04-15 1974-04-24 British Steel Corp Method of and apparatus for controlling a moving metal sheet to conform to a predetermined plane
GB2066786B (en) * 1979-12-26 1983-08-03 Nisshin Steel Co Ltd Method and apparatus for reducing oscillation of running strip
JPS56158863A (en) * 1980-05-14 1981-12-07 Nippon Kokan Kk <Nkk> Changing device for direction of strip in galvanizing vessel
JPH0559511A (ja) * 1991-05-30 1993-03-09 Nippon Steel Corp 鋼帯の溶融亜鉛メツキ設備
DE4242380A1 (de) * 1992-12-08 1994-06-09 Mannesmann Ag Verfahren und Vorrichtung zum Beschichten der Oberfläche von strangförmigem Gut
JP2849528B2 (ja) * 1993-04-22 1999-01-20 新日本製鐵株式会社 鋼帯の溶融亜鉛メッキ設備
DE19535854C2 (de) * 1995-09-18 1997-12-11 Mannesmann Ag Verfahren zur Bandstabilisierung in einer Anlage zum Beschichten von bandförmigem Gut
FR2797277A1 (fr) * 1999-08-05 2001-02-09 Lorraine Laminage Procede et dispositif de realisation en continu d'un revetement de surface metallique sur une tole en defilement
JP2002302315A (ja) * 2001-04-10 2002-10-18 Nkk Corp 非接触通板方向転換装置及び鋼帯の製造方法
US6926733B2 (en) * 2001-08-02 2005-08-09 Boston Scientific Scimed, Inc. Method for enhancing sheet or tubing metal stent radiopacity

Also Published As

Publication number Publication date
CN1653203A (zh) 2005-08-10
WO2003095694A2 (de) 2003-11-20
WO2003095694A3 (de) 2004-09-02
DE50301160D1 (de) 2005-10-13
CN100402692C (zh) 2008-07-16
AU2003232736A1 (en) 2003-11-11
ATE304064T1 (de) 2005-09-15
AU2003232736A8 (en) 2003-11-11
US20050208226A1 (en) 2005-09-22
KR20050006245A (ko) 2005-01-15
JP2005525233A (ja) 2005-08-25
DE20207446U1 (de) 2003-09-25
EP1504135A2 (de) 2005-02-09

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