EP0157057B1 - Procédé de galvanisation pour produire consécutivement deux revêtements différents sur une bande métallique - Google Patents

Procédé de galvanisation pour produire consécutivement deux revêtements différents sur une bande métallique Download PDF

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Publication number
EP0157057B1
EP0157057B1 EP84401547A EP84401547A EP0157057B1 EP 0157057 B1 EP0157057 B1 EP 0157057B1 EP 84401547 A EP84401547 A EP 84401547A EP 84401547 A EP84401547 A EP 84401547A EP 0157057 B1 EP0157057 B1 EP 0157057B1
Authority
EP
European Patent Office
Prior art keywords
tank
bath
fixed
removable
galvanizing
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
Application number
EP84401547A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0157057A1 (fr
Inventor
Guy Gerard
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.)
Fabrique de Fer de Maubeuge
Original Assignee
Fabrique de Fer de Maubeuge
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 Fabrique de Fer de Maubeuge filed Critical Fabrique de Fer de Maubeuge
Priority to AT84401547T priority Critical patent/ATE31742T1/de
Publication of EP0157057A1 publication Critical patent/EP0157057A1/fr
Application granted granted Critical
Publication of EP0157057B1 publication Critical patent/EP0157057B1/fr
Expired 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
    • 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
    • C23C2/003—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
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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 coating of a metal strip with a zinc alloy is carried out today by means of an installation called a galvanizing line along which the strip passes and undergoes various treatments.
  • a galvanizing line along which the strip passes and undergoes various treatments.
  • a cleaning station there is successively a cleaning station, a preheating station with or without atmosphere control, a so-called laboratory station where generally the heating of the strip continues in a very reducing atmosphere, possibly a cooling station to finally arrive in a bath of molten zinc alloy.
  • the strip On leaving the bath, the strip is wrung out and cooled to be either wound up or conducted through subsequent treatment stations (such as, for example, heat treatment or surface treatment stations, etc.).
  • the invention intends to propose another solution for the production, on the same galvanizing line, of two different products, that is to say coated with different alloys, successively, by means of a galvanizing process .
  • the arrangements of the invention advantageously allow a change of bath with a minimum of handling of molten metal, maximum safety in particular for the temperature maintenance device and finally in a relatively short time, that is to say without incidence appreciable on the production capacity and therefore on the cost price of the finished product.
  • the subject of the invention is a method for producing consecutively on a single production line at least two metal foil products coated with different metal alloys, the production line comprising in particular a fixed tank of molten alloy in which the metallic sheet scrolls.
  • this process consists, to go from the first to the second product, to place in the bath of said fixed cube, a removable tank of volume smaller than that of the fixed tank, containing the one of the aforementioned alloys different from that contained in the fixed tank and in passing said metal sheet through the bath of the removable tank, and, to move from the second to the first product, in removing said removable tank, the metal sheet then passing through the fixed tank.
  • One of the phases of the process resides in the fact that, prior to the installation of the removable tank, the stationary tank is partially emptied then, after this installation, the two baths are completed to an identical level.
  • the means for guiding the metal strip 3 in the bath 1 during its circulation in the direction A consist of a return roller 4 immersed in this bath by which the strip passes from its plunging path to its substantially vertical extraction path. This guidance is supplemented by a descaling roller 5.
  • the strip 3 is brought into the bath through a sheath 6 for confining the atmosphere which has an end 6a plunging into the bath to seal the internal volume of the sheath relative to outside.
  • a wringing device 7 which may be mechanical by rollers or by spraying gas.
  • the roller 4 (and the roller 5) is carried by an arm 4a (5a for the roller 5) which is detachably fixed to a fixed structure of the line extending above the tank 2 and which also carries the sheath 6.
  • Figure 2 we retoruve a line structure of galvanizing at the level of the bath 2 of molten alloy substantially identical to that of FIG. 1, at least in its main components. Note however that the end 6a of the sheath 6, and the rollers 4 and 5 are brought together in a zone of the bath 1 of predetermined volume. This volume must be smaller than that inside of a removable tank 8 which can be suspended in the fixed tank 2 by means of fixed suspension devices (represented by a frame 9) which extend above the tank 2 and which are integral with the above fixed structure.
  • fixed suspension devices represented by a frame 9
  • the establishment of the removable tank 8 requires clearing access to the fixed tank 2.
  • the sheath 6 one can provide either its retraction by an appropriate articulation on the fixed structure, or a telescopic construction, or finally a lower part carrying the end 6a (or shoe) easily removable.
  • the production of a second product can be carried out on the same line. It is then advisable, after the latter has been stopped, to disassemble or retract the members 4, 5, 6, 7 and / or 11 and, by means of a lifting bridge, to approach the tank 8 of the fixed tank 2 that we will have partially emptied of its content.
  • the tank 8 will preferably contain a start of bath 10 of a second alloy which will have been created for example by means of an oven or by means of an auxiliary heating which it may comprise. It is known in fact that the ingot of ingots is faster when they are in contact with a bath already created.
  • the metal strip then passes through the bath 10 and is coated with the aforementioned second alloy.
  • the operation consisting in the commissioning of the auxiliary tank is relatively quick so that the downtime of the galvanizing line is not prohibitive as regards its impact on the production cost price.
  • the method according to the invention allows the passage without any danger from one alloy to another since these are contained in two different tanks without any possible solution of a component of the first bath in the second. For example, on a single line, one can produce sheets coated with an alloy containing lead and with a zinc-aluminum alloy in which it is known that the lead must be free.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Coating With Molten Metal (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating Apparatus (AREA)
EP84401547A 1984-03-29 1984-07-23 Procédé de galvanisation pour produire consécutivement deux revêtements différents sur une bande métallique Expired EP0157057B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401547T ATE31742T1 (de) 1984-03-29 1984-07-23 Verfahren zum nacheinander galvanisieren eines metallbandes mit zwei verschiedenen metallueberzuegen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404902A FR2562093B1 (fr) 1984-03-29 1984-03-29 Procede de galvanisation pour produire consecutivement deux revetements differents sur une bande metallique
FR8404902 1984-03-29

Publications (2)

Publication Number Publication Date
EP0157057A1 EP0157057A1 (fr) 1985-10-09
EP0157057B1 true EP0157057B1 (fr) 1988-01-07

Family

ID=9302587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401547A Expired EP0157057B1 (fr) 1984-03-29 1984-07-23 Procédé de galvanisation pour produire consécutivement deux revêtements différents sur une bande métallique

Country Status (13)

Country Link
US (1) US4645694A (fi)
EP (1) EP0157057B1 (fi)
JP (1) JPS61500670A (fi)
KR (1) KR910006641B1 (fi)
AT (1) ATE31742T1 (fi)
AU (1) AU565765B2 (fi)
BR (1) BR8407306A (fi)
CA (1) CA1220679A (fi)
DE (1) DE3468439D1 (fi)
FI (1) FI78323C (fi)
FR (1) FR2562093B1 (fi)
IN (1) IN160743B (fi)
WO (1) WO1985004427A1 (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP107997A0 (en) * 1997-12-22 1998-01-22 Bhp Steel (Jla) Pty Limited Coating metal strip
US20040121083A1 (en) * 2002-11-07 2004-06-24 Galvak, S.A. De C.V. Method and apparatus for change-over of the molten metal coating composition in a steel strip coating line
DE102013101131A1 (de) * 2013-02-05 2014-08-07 Thyssenkrupp Steel Europe Ag Vorrichtung zum Schmelztauchbeschichten von Metallband
US11384419B2 (en) * 2019-08-30 2022-07-12 Micromaierials Llc Apparatus and methods for depositing molten metal onto a foil substrate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135388A (en) * 1932-10-01 1938-11-01 Crown Cork & Seal Co Method of coating iron or steel articles with aluminum
US2751311A (en) * 1954-09-28 1956-06-19 Ajax Electric Company Aluminizing
FR1538560A (fr) * 1967-07-26 1968-09-06 Tech A Gordet Et Cie Off Procédé et dispositif pour le revêtement des métaux ferreux
US3758333A (en) * 1969-07-07 1973-09-11 Thompson E Method for galvanizing
SU676637A1 (ru) * 1977-01-21 1979-07-30 Ордена Ленина И Трудового Красного Знамени Институт Электросварки Им. Е.О.Патона Ан Украинской Сср Электродна печь-ванна дл гор чего покрыти
JPS53141127A (en) * 1977-05-16 1978-12-08 Nippon Steel Corp Molten zinc plating device

Also Published As

Publication number Publication date
BR8407306A (pt) 1986-04-15
FR2562093B1 (fr) 1988-07-22
US4645694A (en) 1987-02-24
AU565765B2 (en) 1987-09-24
FI78323C (fi) 1989-07-10
WO1985004427A1 (fr) 1985-10-10
JPS6411110B2 (fi) 1989-02-23
KR910006641B1 (ko) 1991-08-29
KR850007099A (ko) 1985-10-30
CA1220679A (en) 1987-04-21
JPS61500670A (ja) 1986-04-10
IN160743B (fi) 1987-08-01
EP0157057A1 (fr) 1985-10-09
DE3468439D1 (en) 1988-02-11
AU3159084A (en) 1985-11-01
FI854696A (fi) 1985-11-27
FI854696A0 (fi) 1985-11-27
FI78323B (fi) 1989-03-31
ATE31742T1 (de) 1988-01-15
FR2562093A1 (fr) 1985-10-04

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