LU83562A1 - FERROUS LAMINATE COATING BY DIPPING - Google Patents
FERROUS LAMINATE COATING BY DIPPINGInfo
- Publication number
- LU83562A1 LU83562A1 LU83562A LU83562A LU83562A1 LU 83562 A1 LU83562 A1 LU 83562A1 LU 83562 A LU83562 A LU 83562A LU 83562 A LU83562 A LU 83562A LU 83562 A1 LU83562 A1 LU 83562A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- hood
- continuous laminate
- sheath
- gas
- extends
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims description 18
- 239000011248 coating agent Substances 0.000 title claims description 17
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims description 4
- 238000007598 dipping method Methods 0.000 title description 2
- 239000007789 gas Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 230000007547 defect Effects 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011226 reinforced ceramic Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- 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
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- 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
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
- C23C2/004—Snouts
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Coating With Molten Metal (AREA)
Description
I 1 - 1 - * +I 1 - 1 - * +
La présente invention se rapporte au revêtement de produits laminés continus ferreux, en feuillard, en fil métallique ou en barre, d'une façon comparable à ce qui a été exposé dans le brevet Australien antérieur 481.508.The present invention relates to the coating of continuous ferrous, strip, metal wire or bar products, in a manner comparable to that which was disclosed in the prior Australian patent 481,508.
5 Le procédé de trempage à chaud, objet dudit brevet antérieur, a largement prouvé qu'il satisfaisait à l'utilisation ; toutefois, cette méthode est relativement coûteuse et parfois compliquée dans l'exécution, du fait qu'elle nécessite d'utiliser un gaz chauffé au moins à 400° C ; de plus, bien que r 10 l'invention antérieure ait pour but de fournir un revêtement de laminé continu "ne comportant pas de défaut, de piqûre et d'emplacement non revêtu", et que, par comparaison avec les méthodes de revêtement encore antérieures, elle contribue très efficacement à ce but, l'expérience a montré que l'invention anté- 15 rieure n'est pas entièrement satisfaisante pour empêcher les piqûres et autres défauts semblables provenant de zones non revêtues. En fait, nous estimons douteux de savoir s'il est possible d'éliminer absolument les défauts de piqûres.The hot dipping process, the subject of said prior patent, has largely proved that it satisfies use; however, this method is relatively expensive and sometimes complicated in execution, because it requires the use of a gas heated to at least 400 ° C; moreover, although the aim of the prior invention is to provide a continuous laminate coating "free of defects, pitting and uncoated location", and that, in comparison with the still prior coating methods , it contributes very effectively to this aim, experience has shown that the prior invention is not entirely satisfactory for preventing pitting and other similar defects originating from unpaved areas. In fact, we consider it doubtful whether it is possible to absolutely eliminate the stinging defects.
Un autre point faible de l'invention antérieure est 20 que la hotte (repérée 16 sur les dessins du brevet antérieur) a une tendance à accumuler, sur sa surface interne, des dépôts de zinc et d'oxyde de zinc et qu'il soit nécessaire de nettoyer régulièrement ces dépôts à des intervalles relativement fréquents (par exemple, chaque mois environ). De plus, il est souhaitable 25 d'utiliser des éléments chauffants pour chauffer le laminé con tinu dans un four de recuit précédant la hotte et ces éléments chauffants sont habituellement sous tension. Ainsi un autre inconvénient est que les dépôts mentionnés mettent fréquemment les éléments chauffants en court-circuit nécessitant ainsi des 30 réparations, ce qui est préjudiciable en soi et, de façon im prévue, rend discontinu un procédé de traitement de laminé con- 11 tinu qui, dans la pratique moderne, nécessite précisément d'être continu.Another weak point of the prior invention is that the hood (marked 16 on the drawings of the prior patent) has a tendency to accumulate, on its internal surface, deposits of zinc and zinc oxide and that it is necessary to regularly clean these deposits at relatively frequent intervals (for example, approximately every month). In addition, it is desirable to use heating elements to heat the continuous laminate in an annealing furnace preceding the hood and these heating elements are usually energized. Thus another disadvantage is that the mentioned deposits frequently shorten the heating elements thus necessitating repairs, which is detrimental in itself and, as expected, discontinues a continuous laminate treatment process which , in modern practice, precisely needs to be continuous.
L'objet de la présente invention est de surmonter ou 35 d'améliorer de façon simple les défauts mentionnés, en appor tant une méthode de revêtement du laminé continu qui élimine la nécessité d'une atmosphère réductrice chaude, qui réduise le volume de gaz nécessaire, qui réduise encore davantage les t. > s 1 - 2 - défauts par piqûre et autres défauts, par comparaison avec les résultats obtenus par la pratique de l'invention antérieure ; et qui évite la formation de zinc ou autres dépôts dans la hotte utilisée soit complètement soit suffisamment pour être sans con-5 séquence.The object of the present invention is to overcome or simply improve the aforementioned defects, by providing a method of coating the continuous laminate which eliminates the need for a hot reducing atmosphere, which reduces the volume of gas required. , which further reduces t. > s 1 - 2 - puncture and other defects, by comparison with the results obtained by practicing the prior invention; and which avoids the formation of zinc or other deposits in the hood used either completely or sufficiently to be without sequence.
L'invention consiste en un procédé de revêtement d'un laminé continu, en métal ferreux, chauffé au four, avec un alliage aluminium/zinc, ou autre produit métallique de revêtement compa-1 rable, comportant les phases suivantes : 10 (a) déplacer le laminé continu longitudinalement pour traverser une hotte de protection dont 1'extrémité par laquelle s'effectue la sortie du laminé continu plonge dans un bain de produit métallique de revêtement à l'état fondu, de telle façon que ladite extrémité de sortie renferme une fraction de la sur-15 face supérieure du produit de revêtement, (b) maintenir à l'intérieur de ladite hotte une atmosphère gazeuse réductrice sensiblement calme au moins au voisinage de ladite extrémité de sortie, (c) introduire un gaz réducteur dans une gaine de sor-20 tie du four d'où arrive le laminé continu, gaine disposée en amont de ladite hotte et à travers laquelle ledit laminé continu progresse sur son trajet en direction de ladite hotte et de façon telle que ledit gaz diffuse dans ladite hotte et, (d) limiter le taux de diffusion dudit gaz hors de la-25 dite gaine et en direction de ladite hotte à un taux sensiblement non supérieur à celui qui est nécessaire pour maintenir sensiblement constantes la quantité et la composition du gaz dans ladite hotte.The invention consists of a process for coating a continuous laminate, of ferrous metal, heated in the oven, with an aluminum / zinc alloy, or other metallic product of comparable coating, comprising the following phases: 10 (a) move the continuous laminate longitudinally to pass through a protective hood whose end through which the exit of the continuous laminate is immersed in a bath of metal coating product in the molten state, so that said exit end contains a fraction of the upper surface of the coating product, (b) maintain a substantially gaseous reducing atmosphere inside said hood at least in the vicinity of said outlet end, (c) introduce a reducing gas into a sheath exit-20 tie from the oven from which the continuous laminate arrives, sheath arranged upstream of said hood and through which said continuous laminate progresses in its path towards said hood and in such a way that said ga z diffuses into said hood and, (d) limit the rate of diffusion of said gas out of said duct and towards said hood at a rate substantially not greater than that which is necessary to maintain substantially constant the quantity and the composition gas in said hood.
L'invention apporte également un dispositif pour sui-30 vre le procédé exposé.The invention also provides a device for monitoring the process described.
Les dessins joints représentent des exemples de ce dispositif.The accompanying drawings represent examples of this device.
La figure 1 est une coupe latérale en élévation montrant la gaine de sortie d'un four à laminé continu, une hotte 35 associée avec cette gaine et un bain de produit de revêtement à l'état fondu.FIG. 1 is a side sectional elevation showing the outlet sheath of a continuous laminate oven, a hood 35 associated with this sheath and a bath of coating product in the molten state.
La figure 2 reproduit essentiellement l'extrémité droite de la figure 1 à plus grande échelle et en apportant une légère modification.Figure 2 essentially reproduces the right end of Figure 1 on a larger scale and with a slight modification.
- 3 - ï 1 ί-- 3 - ï 1 ί-
Si l'on se reporte à la figure 1, un laminé continu à revêtir est repéré par le chiffre 3. Il progresse à travers la gaine de sortie du four 4 en direction de la hotte 5 puis dans le bain 6 de produit de revêtement fondu, puis dans une 5 zone d'essuyage 7 où le dépôt d'un produit de revêtement en excès peut être enlevé par l'action d'essuyage d'un gaz ou autrement de façon conventionnelle. La hotte 5 comporte une extrémité de sortie du laminé continu 5a qui plonge dans le produit de revêtement fondu qui se trouve dans le bain 6.Referring to FIG. 1, a continuous laminate to be coated is identified by the number 3. It progresses through the outlet duct of the oven 4 in the direction of the hood 5 then in the bath 6 of molten coating product , then in a wiping area 7 where the deposit of excess coating product can be removed by the wiping action of a gas or otherwise in a conventional manner. The hood 5 has an outlet end of the continuous laminate 5a which plunges into the molten coating product which is in the bath 6.
10 Pendant que le laminé continu se trouve dans la gaine 4 (le four proprement dit n'est pas représenté, étant de conception conventionnelle), il est soumis à une atmosphère réductrice gazeuse dont l'expérience a montré qu'elle peut être un mélange de gaz composé principalement d'azote mais qui peut cont-15 prendre de l'hydrogène dans une proportion ne dépassant pas 15% en volume du mélange. De préférence ce gaz est déshumidifié. Le gaz réducteur peut être amené dans la gaine 4 de toute façon commode ; par exemple au moyen d'une série de buses d'entrée 8 alimentées à partir d'un distributeur d'alimentation (9). Le gaz 20 utilisé ou le gaz en excès peut également être conduit hors de la gaine 4 de toute manière commode, par exemple au moyen de sorties 10 conduisant à un collecteur de dérivation 11. Le gaz peut être amené dans la gaine 4 à toute température convenable ; la température ambiante est tout à fait satisfaisante.10 While the continuous laminate is in the sheath 4 (the oven proper is not shown, being of conventional design), it is subjected to a gaseous reducing atmosphere which experience has shown that it can be a mixture gas composed mainly of nitrogen but which may contain hydrogen in a proportion not exceeding 15% by volume of the mixture. Preferably this gas is dehumidified. The reducing gas can be brought into the sheath 4 in any convenient manner; for example by means of a series of inlet nozzles 8 supplied from a supply distributor (9). The gas 20 used or the excess gas can also be led out of the sheath 4 in any convenient manner, for example by means of outlets 10 leading to a bypass manifold 11. The gas can be brought into the sheath 4 at any temperature suitable; the ambient temperature is completely satisfactory.
25 La gaine 4 contient un certain nombre de cloisons à passages comme 12, 13 et 14. Le laminé continu qui va du four au bain, passe par les passages dans les cloisons, où il est enserré d'aussi près que cela est compatible avec le jeu mécanique suffisant nécessaire pour son passage.The sheath 4 contains a number of passage partitions like 12, 13 and 14. The continuous laminate which goes from the oven to the bath, passes through the passages in the partitions, where it is clamped as closely as is compatible with sufficient mechanical clearance necessary for its passage.
30 On admettra qu'il peut y avoir une certaine perte de • gaz par contre-courant à travers les passages des parois 12 et 13. Cette perte n'est pas importante.It will be recognized that there may be a certain loss of gas by counter-current through the passages of the walls 12 and 13. This loss is not significant.
Le gaz va également diffuser à travers la paroi 14 et pénétrer dans la hotte 5 où il sert de gaz d'appoint pour main-35 tenir sensiblement constantes la teneur en gaz de la hotte et sa composition. Bien entendu, une certaine quantité de gaz sera perdue par entraînement avec le laminé continu lorsqu'il quitte la hotte et il peut y avoir de très légères pertes de gaz dans .....^η?ι*ΐΓ, i 1 » -lila. hotte du fait de son oxydation.The gas will also diffuse through the wall 14 and enter the hood 5 where it serves as make-up gas to keep the gas content of the hood and its composition substantially constant. Of course, a certain amount of gas will be lost by entrainment with the continuous laminate when it leaves the hood and there may be very slight gas losses in ..... ^ η? Ι * ΐΓ, i 1 "- lila. hood due to its oxidation.
De préférence le gaz gui pénètre dans la gaine de sortie du four 4 est suffisamment exactement au-dessus de la pression atmosphérique pour suffire à maintenir les conditions 5 de surpression dans la gaine de sortie, mais dans tous les cas il est possible de contrôler à la fois l'arrivée et l'évacuation du gaz non seulement pour obtenir l'effet de surpression " mentionné, mais en même temps garantir que le gaz qui pénètre dans la hotte est au moins suffisant pour compenser les pertes 10 de gaz dues aux fuites ou autrement.Preferably, the gas which enters the outlet duct of the oven 4 is sufficiently exactly above atmospheric pressure to be sufficient to maintain the conditions of overpressure in the outlet duct, but in all cases it is possible to control at both the inlet and outlet of the gas not only to achieve the "overpressure" effect mentioned, but at the same time ensuring that the gas entering the hood is at least sufficient to compensate for the gas losses due to leaks or otherwise.
Le débit de gaz introduit dans la hotte 5 doit être le débit d'entrée minimum qui assure la fonction d'appoint demandée dans la hotte, tout en préservant l'état calme du gaz de la hotte, au moins au voisinage de l'extrémité de sortie de 15 la hotte. Arrivé à cette extrémité, le gaz qui est sur le point de passer de la gaine 4 dans la hotte 5 en est, de préférence, empêché de toute manière commode, par exemple en utilisant des rouleaux conventionnels d'étanchéité comme indiqué en 15 ou en utilisant des déflecteurs ou autres semblables situés dans la 20 gaine de sortie du four voisine de son extrémité de sortie du laminé continu.The gas flow rate introduced into the hood 5 must be the minimum inlet flow rate which provides the requested backup function in the hood, while preserving the calm state of the gas in the hood, at least in the vicinity of the end. outlet of the hood. Arrived at this end, the gas which is about to pass from the duct 4 into the hood 5 is preferably prevented in any convenient manner, for example by using conventional sealing rollers as indicated in 15 or in using deflectors or the like situated in the outlet duct of the furnace near its outlet end of the continuous laminate.
Se reportant à la figure 2, la disposition qui y est représentée est virtuellement la même que celle déjà décrite, à l'exception des déflecteurs situés au voisinage de la jonction 25 de la gaine 4A et de la hotte 5A.Referring to Figure 2, the arrangement shown there is virtually the same as that already described, with the exception of the deflectors located in the vicinity of the junction 25 of the sheath 4A and the hood 5A.
La pratique expérimentale de l'invention a montré que le maintien des conditions gazeuses nécessaires dans la hotte s'obtient effectivement, particulièrement lorsque le laminé continu à traiter se présente sous la forme d'un feuillard continu "30 dont la largeur est très proche de la largeur intérieure de la hotte, au moyen d'une paire de déflecteurs comme ceux indiqués en 16 et 17.The experimental practice of the invention has shown that the maintenance of the necessary gas conditions in the hood is effectively obtained, particularly when the continuous laminate to be treated is in the form of a continuous strip "30 whose width is very close to the interior width of the hood, by means of a pair of deflectors like those indicated in 16 and 17.
Le déflecteur 16 est une paroi incorporée de matériau réfractaire qui s'étend transversalement à l'extrémité d'entrée 35 de la hotte et s'étend vers le haut depuis le plancher de la hotte jusqu'à un niveau situé juste au dessous de celui du laminé continu.The deflector 16 is an incorporated wall of refractory material which extends transversely to the inlet end 35 of the hood and extends upwards from the floor of the hood to a level situated just below that continuous laminate.
Le déflecteur 17 peut se présenter sous la forme d'une i · - 5 - poutre fabriquée en un matériau en fibre céramique convenablement armé ou d'un autre matériau réfractaire. Cette poutre peut être incorporée mais il est préférable qu'elle soit montée sur un arbre tournant 18 de façon à permettre de la faire tourner 5 dans la position indiquée par les lignes en tiret 17A pour fa ciliter l'enfilage initial de l'extrémité de tête du laminé continu dans et à travers la hotte. Dans le même but il est préférable de prévoir dans la hotte un orifice d'accès 19. Lorsque l'appareil est en service cet orifice est fermé par un couver-10" cle amovible comme indiqué en 20.The deflector 17 can be in the form of a beam made of a suitably reinforced ceramic fiber material or of another refractory material. This beam can be incorporated but it is preferable that it be mounted on a rotating shaft 18 so as to allow it to be rotated 5 in the position indicated by the dashed lines 17A to facilitate the initial threading of the end of continuous laminate head in and through the hood. For the same purpose, it is preferable to provide an access orifice 19 in the hood. When the appliance is in service, this orifice is closed by a cover-10 "removable key as indicated in 20.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPE512280 | 1980-08-19 | ||
AUPE512280 | 1980-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
LU83562A1 true LU83562A1 (en) | 1981-12-01 |
Family
ID=3768649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LU83562A LU83562A1 (en) | 1980-08-19 | 1981-08-18 | FERROUS LAMINATE COATING BY DIPPING |
Country Status (23)
Country | Link |
---|---|
JP (1) | JPS5760014A (en) |
AR (1) | AR226738A1 (en) |
AU (1) | AU543013B2 (en) |
BE (1) | BE889991A (en) |
BR (1) | BR8105280A (en) |
CA (1) | CA1192101A (en) |
DE (1) | DE3132120A1 (en) |
DK (1) | DK160263C (en) |
ES (1) | ES8306390A3 (en) |
FR (1) | FR2488913A1 (en) |
GB (1) | GB2082206B (en) |
IE (1) | IE51782B1 (en) |
IN (1) | IN156849B (en) |
IT (1) | IT1171464B (en) |
LU (1) | LU83562A1 (en) |
MX (1) | MX156647A (en) |
MY (1) | MY8500883A (en) |
NL (1) | NL8103803A (en) |
NZ (1) | NZ197931A (en) |
PH (1) | PH16269A (en) |
SE (1) | SE8104720L (en) |
SG (1) | SG66784G (en) |
ZA (1) | ZA815392B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58175520A (en) * | 1982-04-09 | 1983-10-14 | 松下電器産業株式会社 | Bevarage maker |
US4713154A (en) * | 1985-08-08 | 1987-12-15 | Kawasaki Steel Corporation | Continuous annealing and pickling method and apparatus for steel strips |
JPS62266073A (en) * | 1986-05-14 | 1987-11-18 | テルモ株式会社 | Apparatus for purifying body fluids |
DE3933244C1 (en) * | 1989-10-05 | 1990-06-13 | Hoesch Stahl Ag, 4600 Dortmund, De | Continuous zinc coating appts. for coating metal strip - comprises melt alloy bath covered with hood having hydrogen, steam and inert gas atmos. and control system |
DE4111410C2 (en) * | 1990-04-13 | 1998-02-05 | Centre Rech Metallurgique | Process for the continuous dip coating of steel strip |
JP2517169B2 (en) * | 1990-10-09 | 1996-07-24 | 新日本製鐵株式会社 | Method for producing hot dip galvanized steel sheet |
FR2782326B1 (en) * | 1998-08-13 | 2000-09-15 | Air Liquide | METHOD FOR GALVANIZING A METAL STRIP |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3320085A (en) * | 1965-03-19 | 1967-05-16 | Selas Corp Of America | Galvanizing |
SE393403B (en) * | 1972-08-09 | 1977-05-09 | Bethlehem Steel Corp | WAY TO COVER THE SURFACE OF AN IRON STRING WITH AN AL-ZN ALLOY |
JPS5198634A (en) * | 1975-02-27 | 1976-08-31 | Kohanno renzokuyojuaenmetsukini okeru maeshoryokangengasuno shoho | |
JPS51128610A (en) * | 1975-05-02 | 1976-11-09 | Nippon Steel Corp | A method for reduction of steel strips in reduction furnace of continu ous heat treatment lines for steel plates for plating |
JPS51149130A (en) * | 1975-06-18 | 1976-12-21 | Nippon Steel Corp | Method of producing zincccoated iron plate with good workability |
US4183983A (en) * | 1978-08-17 | 1980-01-15 | Selas Corporation Of America | Method for reducing metal oxide formation on a continuous metal sheet in the hot dip coating thereof |
FR2477900A1 (en) * | 1980-03-14 | 1981-09-18 | Heurtey Metallurgie | METHOD AND DEVICE FOR SEPARATING GASEOUS ATMOSPHERES IN ATMOSPHERE HEAT TREATMENT PLANTS |
-
1980
- 1980-08-19 AU AU74005/81A patent/AU543013B2/en not_active Expired
-
1981
- 1981-08-04 IN IN495/DEL/81A patent/IN156849B/en unknown
- 1981-08-04 NZ NZ197931A patent/NZ197931A/en unknown
- 1981-08-05 IE IE1781/81A patent/IE51782B1/en not_active IP Right Cessation
- 1981-08-05 ZA ZA815392A patent/ZA815392B/en unknown
- 1981-08-06 SE SE8104720A patent/SE8104720L/en unknown
- 1981-08-11 DK DK355581A patent/DK160263C/en not_active IP Right Cessation
- 1981-08-12 GB GB8124608A patent/GB2082206B/en not_active Expired
- 1981-08-13 DE DE19813132120 patent/DE3132120A1/en active Granted
- 1981-08-13 NL NL8103803A patent/NL8103803A/en active Search and Examination
- 1981-08-13 IT IT49111/81A patent/IT1171464B/en active
- 1981-08-14 JP JP56126854A patent/JPS5760014A/en active Granted
- 1981-08-17 FR FR8115802A patent/FR2488913A1/en active Granted
- 1981-08-17 BE BE0/205693A patent/BE889991A/en not_active IP Right Cessation
- 1981-08-18 AR AR286457A patent/AR226738A1/en active
- 1981-08-18 BR BR8105280A patent/BR8105280A/en not_active IP Right Cessation
- 1981-08-18 CA CA000384117A patent/CA1192101A/en not_active Expired
- 1981-08-18 LU LU83562A patent/LU83562A1/en unknown
- 1981-08-18 PH PH26061A patent/PH16269A/en unknown
- 1981-08-19 MX MX188817A patent/MX156647A/en unknown
-
1982
- 1982-05-27 ES ES82512591A patent/ES8306390A3/en not_active Expired
-
1984
- 1984-09-21 SG SG667/84A patent/SG66784G/en unknown
-
1985
- 1985-12-30 MY MY883/85A patent/MY8500883A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR8105280A (en) | 1982-04-27 |
IE811781L (en) | 1982-02-19 |
PH16269A (en) | 1983-08-25 |
DK355581A (en) | 1982-02-20 |
GB2082206A (en) | 1982-03-03 |
SE8104720L (en) | 1982-02-20 |
JPH0338322B2 (en) | 1991-06-10 |
GB2082206B (en) | 1984-05-16 |
DE3132120C2 (en) | 1989-12-14 |
FR2488913B1 (en) | 1984-06-29 |
AU543013B2 (en) | 1985-03-28 |
NL8103803A (en) | 1982-03-16 |
NZ197931A (en) | 1984-07-31 |
CA1192101A (en) | 1985-08-20 |
IT1171464B (en) | 1987-06-10 |
MX156647A (en) | 1988-09-22 |
BE889991A (en) | 1981-12-16 |
ES512591A0 (en) | 1983-04-01 |
DE3132120A1 (en) | 1982-03-25 |
MY8500883A (en) | 1985-12-31 |
IN156849B (en) | 1985-11-16 |
ZA815392B (en) | 1982-08-25 |
AU7400581A (en) | 1982-02-25 |
SG66784G (en) | 1985-03-15 |
AR226738A1 (en) | 1982-08-13 |
ES8306390A3 (en) | 1983-04-01 |
DK160263B (en) | 1991-02-18 |
IE51782B1 (en) | 1987-04-01 |
JPS5760014A (en) | 1982-04-10 |
IT8149111A0 (en) | 1981-08-13 |
FR2488913A1 (en) | 1982-02-26 |
DK160263C (en) | 1991-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2129810B1 (en) | Method for coating a substrate and metal alloy vacuum deposition facility | |
LU83562A1 (en) | FERROUS LAMINATE COATING BY DIPPING | |
BE1008560A3 (en) | Device and method for forming a coating pyrolysis. | |
FR2710070A1 (en) | Method and device for steam cracking a light load and a heavy load. | |
CA1251364A (en) | Process and installation for continuously coating a strip with an oxidizable layer | |
BE1014997A3 (en) | Continuous annealing of steel strip prior to galvanising using direct flame preheating to form an oxide film followed by full annealing and reduction stages to mature this oxide film | |
FR2654749A1 (en) | METHOD AND DEVICE FOR PURIFYING A HOT-TIME LIQUID METAL BATH OF A STEEL BAND | |
CA2010657C (en) | Fusion process for materials containing mineral fibers | |
BE1007266A3 (en) | Method and device for metal bands annealing treatment. | |
FR2504036A1 (en) | METHOD AND DEVICE FOR PREVENTING OXIDATION OF COPPER SLABS AT THE OUTPUT OF A CONTINUOUS CASTING MACHINE | |
WO2015101906A1 (en) | Method and equipment for controlling the temperature of a ribbon of float glass on a molten metal bath | |
LU83207A1 (en) | METHOD AND DEVICE FOR SEPARATING GASEOUS ATMOSPHERES IN ATMOSPHERE HEAT TREATMENT PLANTS | |
FR3002024A1 (en) | FACILITY FOR THE PRODUCTION AND TREATMENT OF SMOKE | |
US2135388A (en) | Method of coating iron or steel articles with aluminum | |
FR2583427A1 (en) | Process for the manufacture of charcoal, device for its use and products obtained by this process | |
EP0157057B1 (en) | Method of consecutively galvanizing a metallic wire with two different coatings | |
FR2628752A1 (en) | Annealing furnace for metallic objects | |
FR3095452A1 (en) | Dual Purpose Metal Strip Continuous Processing Line | |
BE518792A (en) | ||
BE1005288A6 (en) | Installation for the continuous treatment of a galvanised steel strip andprocess for using same | |
BE413215A (en) | ||
BE627041A (en) | ||
FR2606790A1 (en) | PROCESS FOR THERMALLY PROCESSING SMALL METAL PARTS AND INSTALLATION FOR ITS IMPLEMENTATION | |
FR2628753A1 (en) | Annealing furnace for metallic objects | |
BE410945A (en) |