FR2534277A1 - PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED AND OPTIONALLY FORMED METAL STRIP - Google Patents
PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED AND OPTIONALLY FORMED METAL STRIP Download PDFInfo
- Publication number
- FR2534277A1 FR2534277A1 FR8216755A FR8216755A FR2534277A1 FR 2534277 A1 FR2534277 A1 FR 2534277A1 FR 8216755 A FR8216755 A FR 8216755A FR 8216755 A FR8216755 A FR 8216755A FR 2534277 A1 FR2534277 A1 FR 2534277A1
- Authority
- FR
- France
- Prior art keywords
- coating
- carried out
- alloy
- bath
- lacquer
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 238000010924 continuous production Methods 0.000 title claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 claims abstract description 3
- 230000008025 crystallization Effects 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 238000002791 soaking Methods 0.000 claims abstract description 3
- 239000011247 coating layer Substances 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 14
- 239000004922 lacquer Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000011282 treatment Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005246 galvanizing Methods 0.000 abstract description 5
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 239000011701 zinc Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- 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
- C23C2/261—After-treatment in a gas atmosphere, e.g. inert or reducing atmosphere
-
- 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
- C23C2/265—After-treatment by applying solid particles to the molten coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2252/00—Sheets
- B05D2252/10—Applying the material on both sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
- B05D2350/65—Adding a layer before coating metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0281—After-treatment with induction heating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
L'INVENTION CONCERNE UN PROCEDE DE PRODUCTION EN CONTINU D'UNE TOLE, BANDE METALLIQUE 1 OU ANALOGUE REVETUE, CONSISTANT A Y DEPOSER A CHAUD PAR DES MOYENS APPROPRIES UN REVETEMENT D'ALLIAGE DE ZINC 2 PUIS A RECOUVRIR AU MOINS UNE FACE DE LADITE TOLE AINSI GALVANISEE D'AU MOINS UNE COUCHE PRIMAIRE DE REVETEMENT AU SORTIR DU BAIN DE GALVANISATION, DANS LEQUEL, LA GALVANISATION ETANT REALISEE PAR TREMPAGE DANS UN BAIN D'ALLIAGE 2 SUSDIT, ON PROCEDE SUCCESSIVEMENT, SUR UNE MEME LIGNE DE DEFILEMENT DU PRODUIT, A UN ESSORAGE PNEUMATIQUE 4 DE L'ALLIAGE DE REVETEMENT A L'AIDE D'UN FLUIDE NEUTRE ET DANS UNE ATMOSPHERE NON OXYDANTE 3 REALISEE AU-DESSUS DU BAIN 2, A UN MINIFLEURAGE 5 DE LA TOLE PAR PROJECTION DE POUDRE AVANT CRISTALLISATION DE L'ALLIAGE SUSDIT, A UNE REGULATION DE LA TEMPERATURE 6 DE LA TOLE, A UNE APPLICATION PAR DES MOYENS APPROPRIES 7 DE LA COUCHE PRIMAIRE SUSDITE ET A UNE CUISSON 7A DE LADITE COUCHE PRIMAIRE.THE INVENTION CONCERNS A PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED SHEET, METAL TAPE 1 OR ANALOGUE, CONSISTING OF HOT DEPOSIT BY APPROPRIATE MEANS A ZINC 2 ALLOY COATING THEN COVERING AT LEAST ONE SIDE OF THE SIDED SHEET AS WELL AS GALVANIZED WITH AT LEAST ONE PRIMARY COATING LAYER COMING OUT OF THE GALVANIZING BATH, IN WHICH, THE GALVANIZING BEING CARRIED OUT BY SOAKING IN AN ALLOY BATH 2, ABOVE, IT IS SUCCESSIVELY PROCESSED, ON A SAME LINE OF DEFILING THE PRODUCT, TO PNEUMATIC SPIN 4 OF THE COATING ALLOY USING A NEUTRAL FLUID AND IN A NON-OXIDIZING ATMOSPHERE 3 CARRIED OUT ABOVE BATH 2, AT A MINIFLEURING 5 OF THE SHEET BY PROJECTION OF POWDER BEFORE CRYSTALLIZATION OF THE ALLOY RELATED TO A REGULATION OF THE TEMPERATURE 6 OF THE SHEET, TO AN APPLICATION BY APPROPRIATE MEANS 7 OF THE ABOVE PRIMARY COAT AND TO A FIRE 7A OF THE SAID PRIMARY COAT.
Description
Procédé de production en continu d'une bande métallique revêtue etProcess for the continuous production of a coated metal strip and
éventuellement formée D'une manière classique, la production de tôles ondulées ou nervurées peintes comporte trois lignes séparées de fabrication une ligne de galvanisation comportant des postes de traitements thermique et mécanique avant et après le ba c de galvanisation dans laquelle une bande de tôle circule depuis une bobine d'alimentation jusqu'à un poste d'enroulement; une ligne de peinture alimentée en bande galvanisée en bobines issues de la ligne de galvanisation et qui comporte avant le poste d'application de peinture des postes de préparation mécanique et chimique de la bande et, après ce dernier, des postes de cuisson et de refroidissement de la bande peinte, optionally formed In a conventional manner, the production of painted corrugated or ribbed sheets has three separate manufacturing lines, a galvanizing line comprising heat and mechanical treatment stations before and after the galvanizing ba c in which a strip of sheet circulates from a supply reel to a winding station; a paint line supplied with galvanized strip in coils from the galvanization line and which comprises, before the paint application station, mechanical and chemical preparation stations for the strip and, after the latter, baking and cooling stations painted strip,
ainsi qu'un poste d'enroulement; enfin, une ligne de formage ali- as well as a winding station; finally, a line of forming ali-
mentée par des bobines de tôle galvanisée ou peinte qui comporte essentiellement une installation de déroulement et de planage du produit, un poste de coupe transversale et une installation de formage comportant des ensembles de galets pour la réalisation d'ondulations ou de nervures sur les tôles issues du-poste de découpage En variante, il existe également des installations dans mented by coils of galvanized or painted sheet metal which essentially comprises an installation for unwinding and leveling the product, a cross-cutting station and a forming installation comprising sets of rollers for producing corrugations or ribs on the sheets coming from of the cutting station Alternatively, there are also installations in
lesquelles le découpage est réalisé après formage. which cutting is carried out after forming.
Ce rappel très succinct montre que l'obtention de tôles This very brief reminder shows that obtaining sheets
galvanisées peintes débitées et profilées nécessite un nombre d'opé- galvanized painted cut and profiled requires a number of operations
rations important sur le produit entre les trois phases telles que important rations on the product between the three phases such as
l'enroulement, le déroulement, le transport, le stockage intermé- winding, unwinding, transport, intermediate storage
diaire avec les risques de corrosion et de pollution qui y sont attachés, impose en outre des opérations liées à l'existence de ces manipulations intermédiaires que sont le planage, les traitements préparatifs de surface, thermiques et anticorrosion et entraîne la diary with the risks of corrosion and pollution which are attached to it, also imposes operations linked to the existence of these intermediate manipulations that are leveling, surface preparation treatments, heat and anticorrosion and leads to the
production de rebuts.production of scrap.
L'invention entend pallier ces inconvénients en proposant une nouvelle conception d'une telle fabrication guidée par le souci The invention intends to overcome these drawbacks by proposing a new design for such manufacturing guided by the concern
d'intégrer les phases susdites dans une seule ligne de production. integrate the above-mentioned phases into a single production line.
Pour ce faire, elle concerne un procédé de fabrication selon lequel To do this, it relates to a manufacturing process according to which
le produit défile en-continu devant une succession de postes judi- the product scrolls continuously in front of a succession of judicial stations
cieusement sélectionnés en fonction de leur compatibilité mutuelle pour réaliser les différents traitements de la bande permettant d'obtenir un produit fini dans des conditions de rendement optimal carefully selected according to their mutual compatibility to carry out the various treatments of the strip making it possible to obtain a finished product under optimal yield conditions
tant du point de vue du coû t que celui de la qualité. both in terms of cost and quality.
A cet effet, l'invention a donc pour objet un procédé de production en continu d'une tôle, bande métallique ou analogue revêtue, consistant à y déposer à chaud par des moyens appropriés un revêtement d'alliage de zinc puis à recouvrir au moins une face To this end, the subject of the invention is therefore a process for the continuous production of a coated sheet metal, metal strip or the like, consisting of hot depositing thereon by suitable means a coating of zinc alloy and then covering at least a face
de ladite tôle ainsi galvanisée d'au moins une couche primaire de. of said thus galvanized sheet of at least one primary layer of.
revêtement au sortir du bain de galvanisation. coating after leaving the galvanizing bath.
Selon l'une des caractéristiques principales de l'inven- According to one of the main characteristics of the invention
tion, la galvanisation étant réalisée par trempage dans un bain d'alliage susdit, on procède successivement sur une même ligne de défilement du produit à un essorage pneumatique de l'alliage de revêtement à l'aide d'un fluide neutre et dans une atmosphère non oxydante réalisée au-dessus du bain, à un minifleurage du revêtement par projection de poudre avant cristallisation de l'alliage susdit, à une régulation de la température de la tôle, à une application par des moyens appropriés de la couche primaire susdite et à une cuisson tion, the galvanization being carried out by soaking in a bath of the aforementioned alloy, one proceeds successively on a same line of movement of the product to a pneumatic spinning of the coating alloy using a neutral fluid and in an atmosphere non-oxidizing carried out above the bath, to a mini-flowering of the coating by spraying of powder before crystallization of the above-mentioned alloy, to a regulation of the temperature of the sheet, to an application by appropriate means of the above-mentioned primary layer and to cooking
de ladite couche primaire.of said primary layer.
On réalisera ensuite un traitement mécanique à froid Then carry out a mechanical cold treatment
(appelé dans le domaine "skin pass") du produit ainsi revêtu consis- (called in the field "skin pass") of the product thus coated consists
tant en un laminage pour provoquer un certain écrouissage du produit et agir sur sa limite élastique et améliorer son état de surface et both in rolling to cause a certain work hardening of the product and act on its elastic limit and improve its surface condition and
sa planéité.its flatness.
Cette succession d'opérations sera-ensuite suivie par l'application d'une couche de laque, sauf si la couche primaire susdite This succession of operations will then be followed by the application of a layer of lacquer, unless the above-mentioned primary layer
est en elle-même un laquage suffisant. is in itself a sufficient lacquering.
Il seraavantageux de procéder à l'application de la couche It will be advantageous to apply the coat
primaire par projection d'un liquide ou d'une poudre au moyen de pis- primary by spraying a liquid or a powder by means of
tolets à effet électrostatique.tolets with electrostatic effect.
On réalisera ensuite la cuisson, le séchage ou la poly- We will then perform the cooking, drying or poly-
mérisation de cette laque par tout moyen connu et adapté à la qualité merit of this lacquer by any known means and adapted to the quality
du produit de revêtement, tel qu-'un rayonnement ultraviolet, infra- coating material, such as ultraviolet, infrared radiation
rouge, bombardement électronique, courants haute fréquence ou, de red, electronic bombardment, high frequency currents or, of
manière préférée, par induction. preferably by induction.
On notera également que le procédé selon l'invention peut également comporter sur la même ligne de défilement du produit une phase de formage longitudinal de ce dernier suivi ou précédé d'une It will also be noted that the method according to the invention may also include, on the same line of travel of the product, a phase of longitudinal forming of the latter followed or preceded by a
phase de découpage transversal.transverse cutting phase.
L'invention sera mieux comprise au cours de la The invention will be better understood during the
description donnée ci-après à titre d'exemple purement indicatif description given below as a purely indicative example
et non limitatif qui permettra d'en dégager les avantages et les and non-limiting which will make it possible to identify the advantages and
caractéristiques secondaires.secondary characteristics.
Il sera fait référence au dessin annexé qui repré- Reference will be made to the appended drawing which represents
sente de manière schématique une ligne de production faisant appli- schematically feels a production line applying
cation du procédé selon l'invention. cation of the process according to the invention.
En se reportant à cette figure unique, on voit une bande métallique 1 sortant d'un bain d'alliage de zinc fondu 2 A la sortie de ce bain, cette bande (défilant dans le sens A) pénètre Referring to this single figure, we see a metal strip 1 emerging from a bath of molten zinc alloy 2 At the exit of this bath, this strip (running in the direction A) penetrates
dans une enceinte 3 d'atmosphère non oxydante dans laquelle un esso- in a chamber 3 of non-oxidizing atmosphere in which an esso-
rage pneumatique du métal de couverture est assuré par des buses de pneumatic rage of the cover metal is ensured by nozzles
soufflage 4 d'un gaz neutre comme, par exemple, de l'azote Cette- blowing 4 of a neutral gas such as, for example, nitrogen
technique connue consiste, au moyen d'une lame d'azote sous pression, à régler l'épaisseur du film de zinc que l'on désire voir resté known technique consists, by means of a pressurized nitrogen blade, of adjusting the thickness of the zinc film which it is desired to have remained
accroché sur les faces de la bande métallique. hung on the faces of the metal strip.
Avant que le revêtement ne cristallise, on projette sur les faces de la bande, au moyen d'un dispositif 5 approprié, une poudre de zinc qui permet de minimiser le "fleurage", c'est-à-dire la taille des cristaux de zinc Le "minifleurage " ainsi obtenu, Before the coating crystallizes, a zinc powder is sprayed onto the faces of the strip, by means of an appropriate device, which makes it possible to minimize "flowering", that is to say the size of the crystals of zinc The "miniflower" thus obtained,
associé à l'absence presque totale d'oxydation du fait de l'atmos- associated with the almost total absence of oxidation due to the atmos-
phère non oxydante de l'enceinte 3, constitue des conditions opti- non-oxidizing sphere of enclosure 3, constitutes optimal conditions
males d'état de surface pour le dépôt d'une couche primaire d'un surface finish males for the deposition of a primary layer of a
produit de revêtement voire d'une laque En outre, un réglage judi- coating product or even a lacquer In addition, a judicious adjustment
cieux de la projection de poudre favorisera le dépôt de ladite heavens of powder projection will promote the deposition of said
couche primaire ou de la laque.primer or lacquer.
Après le minifleurage, on assure une régulation en température de la bande au moyen du dispositif 6 En effet, selon l'épaisseur de la bande, les températures mises en jeu dans le bain de zinc et,lors de la préchauffe de la bande, la vitesse de défilement,la quantité de chaleur emmagasinée dans la bande After the miniflowering, a temperature regulation of the strip is ensured by means of the device 6 In fact, depending on the thickness of the strip, the temperatures involved in the zinc bath and, during the preheating of the strip, the frame rate, the amount of heat stored in the web
peut être trop faible, ou trop importante pour l'opération sui- may be too weak, or too important for the following operation
vante consistant en l'application d'une couche primaire ou d'une laque au moyen du dispositif 7 On petit donc avoir besoin soit de réchauffer, soit de refroidir la bande pour que l'application de "peinture" soit réalisée dans des conditions optimales, afin d'utiliser au mieux la chaleur de la bande pour le "séchage" de la couche déposée, de manière électrostatique, â partir d'une composition en poudre ou d'une composition liquide En tout état de cause, on procédera donc à une cuisson de cette couche, au besoin en mettant en service un four de séchage cuisson ou polymérisation 7 a disposé vante consisting in the application of a primer or a lacquer by means of the device 7 We can therefore need either to warm up, or to cool the strip so that the application of "paint" is carried out under optimal conditions , in order to best use the heat of the strip for the "drying" of the deposited layer, electrostatically, from a powder composition or a liquid composition In any event, we will therefore proceed to baking of this layer, if necessary by using a baking or polymerization drying oven 7 arranged
sur la ligne -après le dispositif 7. on the line - after device 7.
i En 8 sur la figure, on a représenté un dispositif i At 8 in the figure, there is shown a device
de laminage à froid qui a pour objet de créer un certain écrouis- cold rolling which aims to create a certain work hardening
sage du produit appelé "skin-pass" dans le domaine technique. wise product called "skin-pass" in the technical field.
Le poste de laquage est représenté en 9 A cet endroit, le dépôt de la laque peut se faire Far enduction d'une The lacquering station is shown in 9 At this point, the lacquer can be deposited Far coating with
peinture liquide ou par un dépôt de poudre. liquid paint or powder deposit.
Dans certaines applications de l'invention, il suffit de déposer une seule couche de laque sans nécessité de couche primaire Dans ce cas, le dispositif 6 servira à refroidir la bande 1 avant son passage dans le dispositif 8 de "skin-pass", les postes 7 In certain applications of the invention, it suffices to deposit a single layer of lacquer without the need for a primer. In this case, the device 6 will be used to cool the strip 1 before it passes through the device 8 as a "skin-pass", the posts 7
et 7 a étant hors service On prévoira alors à la sortie-du disposi- and 7 a being out of service.
tif 8 un dispositif de réchauffage de la bande (non représenté) qui tif 8 a strip heating device (not shown) which
permettra le dépot de la laque sur bande chaude, ce qui peut pré- will allow the coating of the lacquer on hot strip, which can pre-
senter-certains avantages pour le séchage de la bande peinte. feel-some advantages for drying the painted strip.
A la sortie du poste d'enduction 9, la bande pénètre dans un tunnel de séchage 10 dont les moyens de chauffe seront adaptés à la nature de la peinture employée On préférera parmi ces moyens un système de chauffe par induction qui permet d'établir un gradient de chaleur décroissant dans le revêtement depuis l'acier jusqu'à la périphérie du revêtement Ainsi, la peinture située au plus près du métal séchera en premier lieu Les composés vaporisables qu'elle contient sous l'effet de la chaleur At the exit from the coating station 9, the strip enters a drying tunnel 10, the heating means of which will be adapted to the nature of the paint used. Among these means, an induction heating system will be preferred which makes it possible to establish a decreasing heat gradient in the coating from the steel to the periphery of the coating Thus, the paint closest to the metal will dry first The vaporizable compounds it contains under the effect of heat
peuvent alors aisément traverser les parties extérieures de pein- can then easily pass through the exterior parts of the paint
ture séchant ultérieurement.later drying.
On peut ainsi éviter le phénomène de bullage qui se produit lors d'un apport de chaleur extérieur durcissant la peau qui retient ces composés vaporisables des couches inférieures It is thus possible to avoid the bubbling phenomenon which occurs during an external heat supply hardening the skin which retains these vaporizable compounds from the lower layers.
vaporisés plus tard -sprayed later -
La bande métallique 1 est au sortir du tunnel 10 conduite à défiler en direction d'une cisaille 11, en passant dans un puits de réserve, pour permettre l'arrêt de la bande au moment de sa découpe sans que le caractère continu du défilement aux postes précédents soit interrompu ou perturbé. Ce sont alors des tronçons de bande la, lb qui sont acheminés dans une machine 12 de formage longitudinal pourvue d'une pluralité de galets de formage pour créer soit des ondulations, The metal strip 1 is at the end of the tunnel 10, led to scroll in the direction of a shears 11, passing through a reserve well, to allow the strip to stop when it is cut without the continuous nature of the scrolling at previous posts either interrupted or disrupted. These are then sections of strip 1a, 1b which are conveyed in a machine 12 for longitudinal forming provided with a plurality of forming rollers to create either corrugations,
soit des nervures dans chaque tronçon. either ribs in each section.
Dans une variante non représentée, on peut alimenter directement la machine 12 de formage au sortir du tunnel 11, la coupe In a variant not shown, the forming machine 12 can be directly fed out of the tunnel 11, the cut
transversale étant réalisée sur le produit profilé. transverse being produced on the profiled product.
On voit que le procédé selon l'invention supprime toutes les opérations d'enroulement et de déroulement intermédiaire du produit et tous les défauts ou inconvénients inhérents à ces It can be seen that the method according to the invention eliminates all the operations of winding and intermediate unwinding of the product and all the defects or disadvantages inherent in these
opérationsteles que les préparations intermédiaires nécessaires. operations as necessary intermediate preparations.
Il y a gain également pour ce qui concerne les moyens de transport, l'espace pour créer des stocks intermédiaires et la main-d'oeuvre There is also a gain in terms of means of transport, space for creating intermediate stocks and labor
nécessaire beaucoup plus réduite avec le procédé de l'invention. much more necessary with the process of the invention.
Par ailleurs, une installation mettant en oeuvre ce procédé peut être de conduite assez simple Ainsi, oh a vu que l'on pouvait se dispenser de la couche primaire si nécessaire On peut également ne procéder au revêtement que d'une face ou réaliser ce revêtement de manière discontinue, l'invention permettant alors In addition, an installation implementing this process can be fairly simple to conduct. Thus, oh saw that one could dispense with the primer if necessary. One can also only carry out the coating on one side or carry out this coating. discontinuously, the invention then allowing
de sortir sur une même ligne de fabrication plusieurs produits dif- to release several different products on the same production line
férents. L'invention trouve une application intéressante famous. The invention finds an interesting application
dans le domaine de la métallurgie des métaux en feuille. in the field of sheet metal metallurgy.
Elle n'est pas limitée à la description qui It is not limited to the description which
vient d'en être donnée mais couvre au contraire toutes les variantes qui pourraient lui être apportées sans sortir de son cadre ni de has just been given, but on the contrary covers all the variants that could be made to it without departing from its scope or
son esprit.his mind.
Claims (7)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8216755A FR2534277A1 (en) | 1982-10-06 | 1982-10-06 | PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED AND OPTIONALLY FORMED METAL STRIP |
| EP83401947A EP0107555A1 (en) | 1982-10-06 | 1983-10-05 | Process for the continuous production of a coated and possibly shaped metallic strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8216755A FR2534277A1 (en) | 1982-10-06 | 1982-10-06 | PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED AND OPTIONALLY FORMED METAL STRIP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2534277A1 true FR2534277A1 (en) | 1984-04-13 |
| FR2534277B1 FR2534277B1 (en) | 1985-02-08 |
Family
ID=9278025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8216755A Granted FR2534277A1 (en) | 1982-10-06 | 1982-10-06 | PROCESS FOR THE CONTINUOUS PRODUCTION OF A COATED AND OPTIONALLY FORMED METAL STRIP |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0107555A1 (en) |
| FR (1) | FR2534277A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6179755A (en) * | 1984-09-28 | 1986-04-23 | Nisshin Steel Co Ltd | Continuous plating device in common use for hot dipping and vacuum deposition plating |
| FR2601700A1 (en) * | 1986-07-18 | 1988-01-22 | Gerard Guy | METAL PRODUCTS ONLINE PROCESSING UNIT |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1446335A (en) * | 1965-04-09 | 1966-07-22 | Strasbourg Forges | Improvements in the manufacture of products and in particular hot-dip galvanized sheets |
| FR1538429A (en) * | 1967-07-11 | 1968-09-06 | Improvement in continuous heating and hot coating processes and installations by immersion in a bath of molten metal of various metallic materials | |
| GB2050867A (en) * | 1979-05-16 | 1981-01-14 | Nisshin Steel Co Ltd | Resin coated zinc plated steel plate and container fabricated from same |
-
1982
- 1982-10-06 FR FR8216755A patent/FR2534277A1/en active Granted
-
1983
- 1983-10-05 EP EP83401947A patent/EP0107555A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1446335A (en) * | 1965-04-09 | 1966-07-22 | Strasbourg Forges | Improvements in the manufacture of products and in particular hot-dip galvanized sheets |
| FR1538429A (en) * | 1967-07-11 | 1968-09-06 | Improvement in continuous heating and hot coating processes and installations by immersion in a bath of molten metal of various metallic materials | |
| GB2050867A (en) * | 1979-05-16 | 1981-01-14 | Nisshin Steel Co Ltd | Resin coated zinc plated steel plate and container fabricated from same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0107555A1 (en) | 1984-05-02 |
| FR2534277B1 (en) | 1985-02-08 |
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