EP2188403B1 - Procédé et installation de galvanisation à chaud pour stabiliser un feuillard enduit d'un revêtement et guidé entre des buses de raclage de l'installation de galvanisation à chaud - Google Patents

Procédé et installation de galvanisation à chaud pour stabiliser un feuillard enduit d'un revêtement et guidé entre des buses de raclage de l'installation de galvanisation à chaud Download PDF

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Publication number
EP2188403B1
EP2188403B1 EP08801674A EP08801674A EP2188403B1 EP 2188403 B1 EP2188403 B1 EP 2188403B1 EP 08801674 A EP08801674 A EP 08801674A EP 08801674 A EP08801674 A EP 08801674A EP 2188403 B1 EP2188403 B1 EP 2188403B1
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EP
European Patent Office
Prior art keywords
strip
hot
distance
detected
width
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EP08801674A
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German (de)
English (en)
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EP2188403A2 (fr
Inventor
Holger Behrens
Michael Zielenbach
Hans-Georg Hartung
Pascal Fontaine
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SMS Siemag AG
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SMS Siemag AG
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Publication date
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Priority to PL08801674T priority Critical patent/PL2188403T3/pl
Publication of EP2188403A2 publication Critical patent/EP2188403A2/fr
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Publication of EP2188403B1 publication Critical patent/EP2188403B1/fr
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    • 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
    • C23C2/14—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
    • 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

Definitions

  • the invention relates to a method for stabilizing the strip of a tape provided with a coating between stripping nozzles of a hot-dip coating plant and a corresponding hot-dip coating installation.
  • a method for stabilizing the strip of a tape provided with a coating between stripping nozzles of a hot-dip coating plant and a corresponding hot-dip coating installation.
  • Electromagnetic band stabilizers are based on the principle of induction, in order to generate attractive forces perpendicular to the ferromagnetic steel strip by means of defined magnetic fields. Thus, the position of the steel strip between two opposite electromagnetic inductors (electromagnets) can be changed without contact.
  • Such systems are known in different types. They are used, for example, in hot-dip coating plants in the coating area above the so-called wiping nozzles. Different regulation. and control concepts are known (e.g. DE 10 2005 060 058 A1 . WO 2006/006911 A1 . WO 02/14572 A1 ).
  • Wiping nozzles are used in hot-dip coating plants for steel strip to obtain a defined amount of coating medium on the strip surface.
  • the quality of the coating depends to a large extent on the uniformity of the wiping medium (eg air or nitrogen) as well as on the band movement in the nozzle area.
  • the belt movements are caused by non-circularity of roles or eg by pulse effect of the air in the cooling tower area of hot dip finishing plants.
  • belt stabilization systems connected downstream in the belt running direction can damp or reduce a belt movement occurring within the scraping nozzle, so that an improvement in the coating accuracy and coating uniformity of the liquid metal on the steel belt is achieved.
  • This can z. B. electromagnetically acting actuators exercise the non-contact attractive forces on the continuous steel band and thus change the band position.
  • the goal of all applications is to position the belt stabilization as close as possible to the wiper nozzle, ignoring the relationship between distance and effect.
  • the object of the invention is therefore to improve the strip stabilization in the region of the wiper.
  • This object is achieved according to the invention with the method according to claim 1.
  • This is characterized in that the distance (the effect) of the band stabilization of the wiping nozzles is set to a value equal to a distance threshold value, which as a function of Bandwidth is determined taking into account a factor Phi, wherein the factor Phi is calculated as a function of the strip thickness and the strip tension.
  • the measured quantity strip position represents the temporal and / or local change of the distance of the strip with respect to a straight reference line transversely to the strip running direction; that is, the tape position represents the tape profile and / or its vibration behavior as a function of time.
  • strip stabilization encompasses two essential aspects in the context of the present description: On the one hand, strip stabilization means smoothing of a wave-shaped strip profile, and on the other hand, this term means damping of vibrations of the strip. Both aspects of band stabilization can be implemented independently or in combination or simultaneously with the aid of suitable control circuits.
  • the essential advantage of the claimed limitation of the distance can be seen in the fact that when the distance is set to a value below the distance threshold value that can be calculated according to the invention, a significantly better effect is achieved for both aspects of the desired band stabilization. In contrast, the effect of band stabilization at intervals above the distance threshold decreases significantly or the band is despite stabilization even more unstable than without control (opposite effect).
  • Ideal would be a distance of zero, that is, if the band stabilization at the level of the scrapers would be arranged, because then the band stabilization would act directly at the level of the stripping and the tape would then held optimally stable during a measurement process.
  • this arrangement is structurally not feasible due to lack of space in the rule. Therefore, the distance should be as small as possible, but maximally set to the value of the distance threshold value which can be calculated according to the invention.
  • the electromagnetic forces are applied by on each band side in pairs opposing coil assemblies whose distance from the wiping nozzles is changeable.
  • the band position within the coil arrangement is preferably measured, specifically in the spatial vicinity of the coil arrangement.
  • the tape position above and below the coil assembly can be measured.
  • a plurality of coils are arranged on each band side, wherein the respective outer coils are arranged to be adjustable on the continuous band edges parallel to the plane of the band.
  • the distance of the belt stabilization device, hereinafter also abbreviated to belt stabilization, of the wiping nozzles should not exceed their bandwidth for wider belts (B> 1400 mm). For narrower bands (B ⁇ 1400 mm), a margin of up to 1.75 times the bandwidth can be allowed. This distance results from the principle of Staint-Venant, which states that with increasing distance of an attacking force on z. B. a clamped steel strip whose effect on the overall state decreases.
  • the basis for the solution according to the invention is the positioning of the strip stabilizer to the wiping nozzle or the wiping nozzles, taking into account the stress mechanism.
  • the above object is further achieved by the claimed hot dip coating equipment.
  • This is characterized in that the distance (effect) of the strip stabilization from the wiping nozzles is set to a value less than or equal to a distance threshold determined as a function of the bandwidth taking into account a factor Phi as a function of strip thickness and strip tension.
  • the arrangement of the belt stabilization and the wiper nozzle is in principle from the FIG. 4 seen.
  • the distance threshold results according to the principle of Venant for continuous wide steel bands to about the bandwidth and for narrower bands to max. 1.75 times the bandwidth (see FIG. 5 ). At a greater distance is the effect of the band stabilization with respect to a smoothing of the band profile (transverse arc, S-shape, see Fig. 2 ) very limited or no longer recognizable at long distances.
  • the following device for combining the strip stabilization with the wiping nozzle, in which the strip stabilizing coils always act towards the centered strip layer:
  • the stabilization must be respectively aligned to the band position and the actual position must be determined.
  • the alignment is done by means of specially mounted alignment aids.
  • the stabilization is mounted on this frame and is thus mechanically fixed and reproducibly adjustable ( Fig. 3 ).
  • the centering on the band position or band center is therefore always identical between stabilization and the scraper nozzle.
  • Wiping nozzles and stabilizing coils are mechanically synchronized and aligned!

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  • 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)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

L'invention concerne un procédé de stabilisation d'un feuillard enduit d'un revêtement et guidé entre des buses de raclage d'une installation de galvanisation à chaud ainsi qu'une installation de galvanisation à chaud correspondante. En fonction de la position du feuillard saisie, des forces stabilisatrices sont exercées sur le feuillard par des bobines agissant sur le feuillard d'acier en déplacement, ces bobines ayant une action électromagnétique sans contact et étant disposées en aval des buses de raclage dans le sens de déplacement du feuillard. Afin de mieux stabiliser le feuillard dans la zone des buses de raclage, l'espacement entre la ligne d'action du dispositif de stabilisation de feuillard et les buses de raclage est réglé à une valeur ≤ à une valeur d'espacement seuil, laquelle est déterminée en fonction de la largeur du feuillard et d'un facteur Phi qui est calculé en fonction de l'épaisseur et de tension du feuillard.

Claims (14)

  1. Procédé pour la stabilisation d'une bande guidée entre des buses de raclage d'une installation d' ennoblissement par trempage à chaud, pourvue d'un revêtement, la position de la bande étant enregistrée et des forces de stabilisation étant exercées par des bobines disposées, dans le sens d'avancement de la bande, en aval des buses de raclage agissant, électromagnétiquement sans contact, sur la bande d'acier qui passe, en fonction de la position de la bande enregistrée, caractérisé
    en ce que la distance (de l'effet) de la stabilisation de la bande des buses de raclage est réglée à une valeur inférieure à une valeur seuil de la distance, qui est déterminée comme fonction de la largeur de la bande en tenant compte d'un facteur Phi, le facteur Phi étant calculé en fonction de l'épaisseur de la bande et de la traction de la bande ; et
    en ce que la distance, en fonction de la largeur réelle de la bande, représente 1,75-0,75 fois la largeur de la bande.
  2. Procédé selon la revendication 1, caractérisé
    en ce qu'on mesure la position de la bande dans la disposition de bobines.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce qu'on mesure la position de la bande dans le voisinage spatial de la disposition de bobines.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce qu'on mesure la position de la bande en plus au-dessus et en dessous de la disposition de bobines.
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce que la position de la bande est enregistrée comme répartition dans l'espace de la distance de la bande par rapport à une ligne de référence droite sur la largeur de la bande et représente dans ce contexte, en tant que grandeur de mesure instantanée, le profil instantané de la bande.
  6. Procédé selon la revendication 5, caractérisé
    en ce que les forces de stabilisation agissent transversalement par rapport au sens du transport sur la bande, en fonction du profil instantané enregistré de la bande, pour lisser par traction le profil instantané enregistré de la bande en un profil de consigne optimal prédéfini de la bande sous forme d'un profil de bande lisse, sans ondulations, transversalement au sens de la bande.
  7. Procédé selon l'une quelconque des revendications 1-4, caractérisé
    en ce que la position de la bande est enregistrée par la modification dans le temps de la distance de la bande par rapport à une ligne de référence droite et représente dans ce contexte comme grandeur de mesure instantanée, le comportement d'oscillation instantané de la bande en fonction du temps.
  8. Procédé selon la revendication 6, caractérisé
    en ce que les forces de stabilisation agissent de préférence perpendiculairement au sens du transport sur la bande, en fonction du comportement d'oscillation instantané enregistré de la bande, pour amortir, si nécessaire, de manière appropriée le comportement d'oscillation instantané enregistré de la bande.
  9. Procédé selon l'une quelconque des revendications 5-8, caractérisé en ce que la position mesurée de la bande représente, comme modification dans le temps et dans l'espace répartie sur la largeur de la bande de la distance de la bande par rapport à la ligne de référence droite, le comportement d'oscillation du profil de la bande en fonction du temps ; et
    en ce que les forces de stabilisation agissent de manière appropriée sur la bande de manière telle que le profil de la bande, si nécessaire, est lissé et que son comportement d'oscillation est en même temps amorti de manière appropriée.
  10. Installation d'ennoblissement par trempage à chaud pour le revêtement d'une bande par un revêtement, comprenant :
    au moins une buse de raclage pour éliminer du revêtement en excès de la bande ;
    un dispositif pour enregistrer la portion de la bande ; et
    une stabilisation de la bande dotée de bobines électromagnétiques, disposée en aval de la buse de raclage dans le sens d'avancement de la bande, pour générer des forces de stabilisation agissant sans contact sur la bande d'acier,
    en fonction de la position enregistrée de la bande, caractérisée en ce que la distance (de l'effet) de la stabilisation de la bande des buses de raclage est réglée à une valeur inférieure à une valeur seuil de la distance, qui est déterminée comme fonction de la largeur de la bande en tenant compte d'un facteur Phi, le facteur Phi étant calculé en fonction de l'épaisseur de la bande et de la traction de la bande ; et
    en ce que la distance, en fonction de la largeur réelle de la bande, représente 1,75-0,75 fois la largeur de la bande.
  11. Dispositif de galvanisation à chaud selon la revendication 10, caractérisé
    en ce que les bobines sont disposées sur la face supérieure et inférieure de la bande, par paire les unes en face des autres et leur distance par rapport aux buses de raclage peut être modifée.
  12. Dispositif de galvanisation à chaud selon la revendication 10 ou 11, caractérisé
    en ce que le dispositif de mesure est disposé au niveau des bobines ou à proximité de celles-ci et y enregistre la position de la bande.
  13. Dispositif de galvanisation à chaud selon la revendication 10, 11 ou 12, caractérisé
    en ce qu'à chaque fois plusieurs bobines sont disposées sur la face supérieure et/ou inférieure de la bande, en étant réparties sur la largeur de la bande et en ce que les bobines situées à chaque fois à l'extérieur sont disposées sur les bords de la bande qui passent de manière à pouvoir être réglées parallèlement au plan de la bande.
  14. Dispositif de galvanisation à chaud selon l'une quelconque des revendications 11-13, caractérisé
    en ce que la stabilisation de la bande et le dispositif de mesure sont distancés l'un de l'autre en étant couplés de manière mécaniquement fixe l'un à l'autre.
EP08801674A 2007-08-22 2008-08-22 Procédé et installation de galvanisation à chaud pour stabiliser un feuillard enduit d'un revêtement et guidé entre des buses de raclage de l'installation de galvanisation à chaud Active EP2188403B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08801674T PL2188403T3 (pl) 2007-08-22 2008-08-22 Sposób i instalacja do uszlachetniania zanurzeniowego do stabilizowania prowadzonej pomiędzy dyszami zgarniającymi instalacji do uszlachetniania zanurzeniowego, pokrytej powłoką taśmy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007039690 2007-08-22
PCT/EP2008/006923 WO2009024353A2 (fr) 2007-08-22 2008-08-22 Procédé et installation de galvanisation à chaud pour stabiliser un feuillard enduit d'un revêtement et guidé entre des buses de raclage de l'installation de galvanisation à chaud

Publications (2)

Publication Number Publication Date
EP2188403A2 EP2188403A2 (fr) 2010-05-26
EP2188403B1 true EP2188403B1 (fr) 2012-07-25

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EP08801674A Active EP2188403B1 (fr) 2007-08-22 2008-08-22 Procédé et installation de galvanisation à chaud pour stabiliser un feuillard enduit d'un revêtement et guidé entre des buses de raclage de l'installation de galvanisation à chaud

Country Status (15)

Country Link
US (1) US20100285239A1 (fr)
EP (1) EP2188403B1 (fr)
JP (1) JP5355568B2 (fr)
KR (1) KR101185395B1 (fr)
CN (1) CN101784689B (fr)
AU (1) AU2008290746B2 (fr)
BR (1) BRPI0815633B1 (fr)
CA (1) CA2697194C (fr)
DE (1) DE102008039244A1 (fr)
ES (1) ES2387835T3 (fr)
MX (1) MX2010002049A (fr)
MY (1) MY164257A (fr)
PL (1) PL2188403T3 (fr)
RU (1) RU2436861C1 (fr)
WO (1) WO2009024353A2 (fr)

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US10982307B2 (en) 2016-02-23 2021-04-20 Fontaine Engineering Und Maschinen Gmbh Method for operating a coating device for coating a metal strip, and coating device

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DE102012000662A1 (de) 2012-01-14 2013-07-18 Fontaine Engineering Und Maschinen Gmbh Vorrichtung zum Beschichten eines metallischen Bandes mit einem Beschichtungsmaterial
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Publication number Priority date Publication date Assignee Title
US10982307B2 (en) 2016-02-23 2021-04-20 Fontaine Engineering Und Maschinen Gmbh Method for operating a coating device for coating a metal strip, and coating device

Also Published As

Publication number Publication date
AU2008290746B2 (en) 2011-09-08
BRPI0815633A2 (pt) 2015-02-18
CA2697194C (fr) 2012-03-06
MY164257A (en) 2017-11-30
KR101185395B1 (ko) 2012-09-25
DE102008039244A1 (de) 2009-03-12
WO2009024353A2 (fr) 2009-02-26
PL2188403T3 (pl) 2012-12-31
KR20100030664A (ko) 2010-03-18
RU2010110581A (ru) 2011-09-27
CN101784689A (zh) 2010-07-21
AU2008290746A1 (en) 2009-02-26
JP2010535945A (ja) 2010-11-25
BRPI0815633B1 (pt) 2018-10-23
US20100285239A1 (en) 2010-11-11
EP2188403A2 (fr) 2010-05-26
CA2697194A1 (fr) 2009-02-26
MX2010002049A (es) 2010-05-03
WO2009024353A3 (fr) 2010-01-21
RU2436861C1 (ru) 2011-12-20
CN101784689B (zh) 2013-06-26
JP5355568B2 (ja) 2013-11-27
ES2387835T3 (es) 2012-10-02

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