EP0122856B1 - Procédé et installation pour le revêtement en continu d'une bande à l'aide d'un revêtement oxydable - Google Patents

Procédé et installation pour le revêtement en continu d'une bande à l'aide d'un revêtement oxydable Download PDF

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Publication number
EP0122856B1
EP0122856B1 EP84400723A EP84400723A EP0122856B1 EP 0122856 B1 EP0122856 B1 EP 0122856B1 EP 84400723 A EP84400723 A EP 84400723A EP 84400723 A EP84400723 A EP 84400723A EP 0122856 B1 EP0122856 B1 EP 0122856B1
Authority
EP
European Patent Office
Prior art keywords
gas
substance
seeds
strip
process according
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
EP84400723A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0122856A1 (fr
Inventor
Jean-Paul Hennechart
Bernard Bramaud
François Prat
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.)
GALVANOR ZIEGLER
Original Assignee
GALVANOR ZIEGLER
Ziegler SA
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 GALVANOR ZIEGLER, Ziegler SA filed Critical GALVANOR ZIEGLER
Priority to AT84400723T priority Critical patent/ATE34780T1/de
Publication of EP0122856A1 publication Critical patent/EP0122856A1/fr
Application granted granted Critical
Publication of EP0122856B1 publication Critical patent/EP0122856B1/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
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material
    • 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

Definitions

  • the present invention relates to a process for the continuous deposition of a coating on a strip, this deposition being carried out by passage of the strip in a bath of heated coating material beyond its melting point.
  • the invention applies in particular to the coating of a steel sheet with a layer of metal such as zinc.
  • Patent FR 1,563,457 describes a more efficient method which consists in sending a jet of gas, preferably air in the case of a coating of lead and vapor of vapor, onto this layer of liquid coating material.
  • a jet of gas preferably air in the case of a coating of lead and vapor of vapor
  • this gas jet being supplied by a slot-shaped nozzle whose shape, position and orientation are precisely defined, as well as the gas pressure, in order to provide a jet in form of blade which removes the external fraction of the thickness of liquid and causes it to fall back towards the bath, entraining with it the dross and oxides which could come from the surface of the bath.
  • a process known as “minimized flowering” is known in which a gas laden with crystallization seeds is sprayed onto the strip.
  • this gas is compressed air into which fine solid particles of zinc have been introduced.
  • a suction mouth is placed in the immediate vicinity of the blowing nozzle and the sucked air is recycled after filtration.
  • the main object of the present invention is to reduce the consumption of high purity inert gas without exaggerated increase in the complication of the installation, so as to achieve a total significant reduction in cost prices.
  • Another object of the invention is to improve the quality of the product by improving the regularity of crystallization.
  • the invention therefore provides a method of continuously coating a strip with an oxidizable coating material, which method involves passing the strip through a bath containing the coating material in the liquid state; the strip is brought out of this bath in an upward direction; it is subjected to a regularization operation of the thickness of the layer of liquid coating material entrained by the strip, this regularization operation being carried out in an enclosure substantially isolated from the atmosphere and containing a first non-oxidizing or weakly oxidizing gas who undergoes at least partial recycling; the regularization operation being optionally followed by a germ projection operation during which a second gas charged with crystallization germs of said coating material is sprayed onto the coating material, this gas then being at least partially recycled, which has the particularity that one purifies at least part of the first gas and / or at least part of the second gas if the projection of the germs is carried out by bringing it into contact with a reducing substance to reduce its oxygen content to - below a value chosen in advance.
  • the coating thickness regularization and germ blowing operations take place in a common enclosure, in which the first and second gases mix.
  • the quality is further improved by the fact that the strip can be protected from the atmosphere until crystallization, and the installation is simplified due to the existence of a single enclosure and, possibly a single purification device, placed on one or the other of the recycling circuits or at a point common to these two circuits.
  • the purification and the introduction of germs of crystallization are carried out simultaneously in said second gas before being used for the projection of germs.
  • the substance which gives rise to the seeds of crystallization is reducing, it is advantageous to provide that said substance is introduced into said second gas, then the second gas is brought to a temperature high enough to lower its oxygen content. at the selected value, by reaction of oxygen on said substance.
  • This reduction reaction can be improved by an injection of a hydrocarbon, in small quantity, the substance which gives rise to germs, zinc for example, then playing in addition the role of catalyst in the hydrocarbon-oxygen reaction, in addition to its possible own reducing role.
  • the second gas which contains the result of the oxidation of said substance and possibly a part of the unreacted substance, is brought to the temperature conditions suitable for said operation of projection of the germs.
  • the reducing substance is introduced into the second gas in the vapor state and after the oxidation of part of this vapor, the second gas is cooled to cause the said substance to form germs by condensation in the state solid.
  • the gas to be purified is brought into contact with a hot surface, in the presence of the reducing substance.
  • a hot surface can be constituted by plates heated by an appropriate means, but also by the sheet itself leaving the bath, in the case where the metal coating bath is at high temperature (manufacture of aluminized sheet for example).
  • This modality is particularly suited to the case where you want to be able to use at will or leave the minimized flowering equipment at rest. Indeed, this modality can be implemented by acting on the first gas as well as on the second gas, the seeds of crystallization being introduced into the latter, for example in a conventional manner. It can also be implemented inside the enclosure common to the two circuits if there is one.
  • an installation comprising means for successively continuously passing a strip through a molten bath of coating material, to remove this strip from the bath in a upward direction, means for regularizing the thickness of the layer of liquid coating material entrained by the strip, these means being able to comprise at least one wiping nozzle arranged to blow a jet of gas in the form of a blade in the direction of the strip , these means being arranged inside an enclosure open towards the bottom and comprising lateral walls which plunge into the bath and an upper wall having a narrow slot intended for the exit of the strip, the enclosure being associated with a circuit for recycling the gas it contains and for sending this gas to the dewatering nozzle (s), the installation further comprising at least one blowing nozzle for cooling the strip below the point solidifying the coating material and optionally projecting crystallization seeds thereon, this blowing nozzle being associated with a circuit for recycling the second gas which comprises means for introducing crystallization seeds into said second gas upstream of the blowing nozzle or
  • the means for regulating the coating thickness and the germ-blowing nozzle or nozzles are arranged in a common enclosure and said means for introducing the reducing substance or substances and for bringing the gas to the reaction temperature are arranged either in the enclosure, or in only one of the circuits for recycling.
  • the means for introducing the reducing substance into the gas and bringing the latter to the reaction temperature consist of an enclosure by run by the gas and containing a bath of reducing substance in the liquid state and a plasma torch disposed above this bath to vaporize said substance.
  • the purification reaction can be improved by adding a small amount of hydrocarbon.
  • the means for introducing the reducing substance into the gas consist of an enclosure containing a bath of reducing substance in the liquid state, and means for forcing the gas to lick the surface of this bath or to splash around.
  • the quantity of reducing substance introduced into the gas is a function of the temperature of the metal bath of the reducing substance, and / or of the flow rate of gas bubbling through this enclosure.
  • the purification reaction can be improved by the injection of a hydrocarbon, in small quantity.
  • said means for introducing the reducing substance in the gas are disposed on the circuit for recycling the second gas, and between said means and the or germ blowing nozzles means are provided for cooling the second gas until the formation of germs by condensation in the solid state of the reducing substance.
  • the means for deoxidizing the gas are obtained by placing, in said enclosure, in the immediate vicinity of the narrow slot provided in the upper wall of the enclosure, plates heated to high temperature and by introducing into the enclosure, near these plates, a small amount of hydrocarbon in order to obtain the deoxidation of the gases contained in the enclosure.
  • This device can be installed at another location on either circuit, but the advantage of the arrangement just described is better control of the oxygen content.
  • the exit slot of the strip is the main passage for the entry of oxygen into the enclosure, by circulation against the current of the strip.
  • the strip to be coated arrives from the left in FIG. 1, it first passes through an oven 2, with a controlled reducing atmosphere, which ensures both cleaning and surface preparation, possibly a heat treatment, and the adjustment of the temperature of the sheet, at a temperature close to that of the bath.
  • the strip 1 guided by rollers 3, 4, 5 then descends into the bath of molten zinc 7, then rises vertically below the bath and is sent after a roll 6 to a winding station, not shown.
  • a sheath 8 which plunges into the bath and communicates with the oven 2, surrounds the strip on its path between the oven and the bath 7, so as to prevent any formation of oxide on the cleaned and hot metal before it comes into contact with the zinc of the bath.
  • the strip On leaving the bath, the strip is surrounded by a bottomless box 9, the side walls of which dip into the molten zinc.
  • the roof of the box has a very narrow slot 10 for the exit of the strip 1 upwards.
  • nozzles 11 Inside the box are arranged two nozzles 11, in the form of an elongated slot, intended to regularize the thickness of the coating to the desired thickness, and, above the nozzles 11, two other nozzles 12, for cooling and / or minimized flowering.
  • the spinning nozzles 11 are supplied with nitrogen by a recycling circuit which comprises an extraction pipe 13 by which gas is extracted from the box 9, a cold water refrigerant 14, which lowers the temperature of the gas to improve the operation of the pump 15 which follows it.
  • a filter 16 is interposed between the refrigerant and the pump.
  • a supply line 17 connects the pump 15 to the wiping nozzles 11. To this line 17 is connected a nitrogen supply line 18 provided with a valve and connected to a source of high purity nitrogen 19.
  • the minimized flowering nozzles are supplied by a similar circuit, comprising an extraction line 20, a cooler 21, a pump 22 and a supply line 23, but without an auxiliary line.
  • FIG. 2 shows an apparatus for introducing a reducing substance which is preferably placed at the location designated by 24 in FIG. 1.
  • This apparatus comprises a closed enclosure 30 which contains a bath of liquid zinc 31 and, above, from this bath a plasma torch 32 arranged to vaporize the zinc of the bath.
  • the enclosure 30 is connected to the pipes 20, 23 by two pipes 33, 34, on either side of the pump 22, so as to constitute a circuit parallel to the circuit which includes the nozzles 12 for projecting germs.
  • An adjustment valve is provided on the gas inlet pipe 33 to the enclosure.
  • FIG. 3 shows another apparatus for introducing a reducing substance which can be substituted for that of FIG. 2. It comprises an enclosure 40 in which a bath of liquid zinc 41 is maintained at the temperature chosen to introduce the desired quantity of vapor of vapor. zinc in the gas. The free surface of the bath 41 is also defined accordingly.
  • the gas inlet and outlet lines 42 and 42 are arranged in the same manner as in the case of FIG. 2. If it is desired to increase the quantity of zinc vapor introduced into the gas, it is also possible to provide for bubbling a little gas by a cane 44 immersed in the bath, this cane being connected to a source of high purity nitrogen 46.
  • a tube 45 connected to the pipe 43, allows a very small amount to be introduced hydrocarbon; the latter in the presence of zinc powder improves the deoxidation of the recirculating gas.
  • FIG. 5 represents another embodiment of purification equipment.
  • an enclosure 50 In an enclosure 50 are arranged two concentric nozzles supplied 51, 52, the first of which is supplied with gas to be purified through an inlet pipe 53, provided with a valve 54, and the second is supplied with methane, or another hydrocarbon, via a supply line 55 provided with a valve 56.
  • the mixture of gas to be purified and methane is sprayed onto a plate 57 heated for example by resistors up to a temperature sufficient for the free oxygen to disappear .
  • the purified gas is returned in circuit by a return pipe 58.
  • Such an apparatus can be arranged both in the position provided at 24 in FIG. 1, as in the position marked at 25. If it occupies position 24, a conventional device for introducing germs must be provided.
  • two plates 60 are arranged on either side of the slot 10 through which the strip 1 leaves the enclosure 9, which corresponds to position 26 of Figure 1. These plates 60 are heated by resistors 61 to a temperature such that the oxygen entering through the slot 10 against the current of the strip 1 immediately reacts on the methane introduced by the conduits 62 in the gas near the hot surfaces.
  • the zinc vaporization device and the methane injection were out of service.
  • the oxygen content of the nitrogen in circulation was 2%.
  • the oxygen content in the circulating nitrogen was less than 200 ppm.
  • the other conditions were the same, the device of FIG. 3 was used.
  • the temperature of the zinc in the auxiliary crucible was 600 ° C. and the flow of nitrogen sweeping the surface of this crucible was 25 m 3 / h, the nitrogen flow bubbling through the crucible was 2 m 3 / h and the quantity of methane injected 1 m 3 / h.
  • An oxygen content in nitrogen was also obtained of less than 200 ppm.
  • the use of the device of FIG. 4 therefore makes it possible to obtain very high purities of oxygen, it must however be observed that it does not provide germs for the minimized flowering nozzles. If this is necessary, a separate diet should be provided for these germs.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating With Molten Metal (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Wrappers (AREA)
  • Chemical Vapour Deposition (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Catalysts (AREA)
EP84400723A 1983-04-13 1984-04-11 Procédé et installation pour le revêtement en continu d'une bande à l'aide d'un revêtement oxydable Expired EP0122856B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400723T ATE34780T1 (de) 1983-04-13 1984-04-11 Verfahren und vorrichtung zum kontinuierlichen ueberziehen eines bleches mit einem oxydierbaren ueberzug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8306056 1983-04-13
FR8306056A FR2544337B1 (fr) 1983-04-13 1983-04-13 Procede et installation pour le revetement en continu d'une bande a l'aide d'un revetement oxydable

Publications (2)

Publication Number Publication Date
EP0122856A1 EP0122856A1 (fr) 1984-10-24
EP0122856B1 true EP0122856B1 (fr) 1988-06-01

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ID=9287818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400723A Expired EP0122856B1 (fr) 1983-04-13 1984-04-11 Procédé et installation pour le revêtement en continu d'une bande à l'aide d'un revêtement oxydable

Country Status (8)

Country Link
US (1) US4612215A (enrdf_load_stackoverflow)
EP (1) EP0122856B1 (enrdf_load_stackoverflow)
JP (1) JPS59205463A (enrdf_load_stackoverflow)
AT (1) ATE34780T1 (enrdf_load_stackoverflow)
CA (1) CA1251364A (enrdf_load_stackoverflow)
DE (2) DE122856T1 (enrdf_load_stackoverflow)
ES (1) ES531555A0 (enrdf_load_stackoverflow)
FR (1) FR2544337B1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608945A1 (fr) * 1986-12-31 1988-07-01 Stein Heurtey Perfectionnements apportes aux systemes d'essorage, par soufflage de gaz, d'un revetement metallique depose sur une bande
EP0260533A3 (en) * 1986-09-19 1989-03-15 Paul Fontaine Method and apparatus for removing a liquid coating from steel strip
DE4008738C1 (en) * 1989-06-07 1990-11-08 Hoesch Stahl Ag, 4600 Dortmund, De Improving surface quality of steel strip or sheet - by coating with aluminium zinc alloy including silicon

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807070B1 (fr) * 2000-03-28 2002-05-17 Delot Process Sa Procede et dispositif pour realiser un revetement metallique sur un objet sortant d'un bain de metal fondu
DE10333766B4 (de) * 2003-07-23 2009-01-22 Thyssenkrupp Steel Ag Verfahren und Vorrichtung zum Schmelztauchbeschichten von Metallband
JP4451194B2 (ja) * 2004-04-13 2010-04-14 三菱日立製鉄機械株式会社 液体ワイピング装置
US20050281953A1 (en) * 2004-06-21 2005-12-22 Carroll Kevin R Coating apparatus and method
EP2045349A1 (en) * 2007-10-05 2009-04-08 Linde Aktiengesellschaft Method and apparatus for continuous hot-dip coating of metal strips
EP2166124A1 (en) * 2008-09-12 2010-03-24 Linde AG Method and apparatus for continuous hot-dip coating of metal strips
WO2010130883A1 (fr) 2009-05-14 2010-11-18 Arcelormittal Investigacion Y Desarrollo Sl Procede de fabrication d'une bande metallique revetue presentant un aspect ameliore
WO2010130884A1 (fr) * 2009-05-14 2010-11-18 Arcelormittal Investigacion Y Desarrollo Sl Procédé de fabrication d'une bande métallique revêtue présentant un aspect amélioré
US9863029B2 (en) * 2012-08-01 2018-01-09 Dongkuk Steel Mill Co., Ltd. Apparatus for forming nitrogen cloud to produce hot dip coated steel sheet
NO2786187T3 (enrdf_load_stackoverflow) 2014-11-21 2018-07-28
DE102015216721B3 (de) * 2015-09-01 2016-11-24 Fontaine Engineering Und Maschinen Gmbh Vorrichtung zum Behandeln eines Metallbandes
KR101758717B1 (ko) * 2016-05-17 2017-07-18 동국제강주식회사 표면 품질이 우수한 용융도금강판을 제조하기 위한 질소구름을 형성하기 위한 장치 및 이를 이용한 아연-알루미늄합금도금강판을 제조하는 방법
DE102016222230A1 (de) 2016-08-26 2018-03-01 Sms Group Gmbh Verfahren und Beschichtungseinrichtung zum Beschichten eines Metallbandes
DE102017109559B3 (de) 2017-05-04 2018-07-26 Fontaine Engineering Und Maschinen Gmbh Vorrichtung zum Behandeln eines Metallbandes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124408A1 (fr) * 1983-04-13 1984-11-07 Ziegler S.A. Installation pour le revêtement en continu de bande, notamment pour la galvanisation de tôle d'acier

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US1588258A (en) * 1926-01-15 1926-06-08 Air Reduction Production of oxygen-free nitrogen
US1773495A (en) * 1928-08-21 1930-08-19 Newhall Henry B Corp Process and apparatus for treating galvanized articles
US2526731A (en) * 1945-02-13 1950-10-24 Armco Steel Corp Method of and apparatus for coating metallic strands with a metal coating
US2889803A (en) * 1956-05-29 1959-06-09 William S Pearson Galvanizing means
JPS5235722A (en) * 1975-09-16 1977-03-18 Nippon Steel Corp One side molten metal plating method
JPS55110716A (en) * 1979-02-20 1980-08-26 Ishikawajima Harima Heavy Ind Co Ltd Slab insertion device for heating furnace
AU538925B2 (en) * 1979-04-16 1984-09-06 Ak Steel Corporation Finishing of hop dip coating of ferrous base metal
US4330574A (en) * 1979-04-16 1982-05-18 Armco Inc. Finishing method for conventional hot dip coating of a ferrous base metal strip with a molten coating metal
AU525668B2 (en) * 1980-04-25 1982-11-18 Nippon Steel Corporation Hot dip galvanizing steel strip with zinc based alloys
JPS56158860A (en) * 1980-05-13 1981-12-07 Nippon Steel Corp Method and apparatus for removing fume from galvanizing
US4370357A (en) * 1981-03-11 1983-01-25 Cleveland Gear Company Process of continuous metal coating
FR2507106B1 (fr) * 1981-06-03 1986-07-11 Stein Heurtey Dispositif pour le traitement de surfaces de toles galvanisees en atmosphere confinee
US4444814A (en) * 1982-06-11 1984-04-24 Armco Inc. Finishing method and means for conventional hot-dip coating of a ferrous base metal strip with a molten coating metal using conventional finishing rolls

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0124408A1 (fr) * 1983-04-13 1984-11-07 Ziegler S.A. Installation pour le revêtement en continu de bande, notamment pour la galvanisation de tôle d'acier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260533A3 (en) * 1986-09-19 1989-03-15 Paul Fontaine Method and apparatus for removing a liquid coating from steel strip
FR2608945A1 (fr) * 1986-12-31 1988-07-01 Stein Heurtey Perfectionnements apportes aux systemes d'essorage, par soufflage de gaz, d'un revetement metallique depose sur une bande
DE4008738C1 (en) * 1989-06-07 1990-11-08 Hoesch Stahl Ag, 4600 Dortmund, De Improving surface quality of steel strip or sheet - by coating with aluminium zinc alloy including silicon
EP0401727A3 (de) * 1989-06-07 1991-09-25 Krupp Hoesch Stahl AG Verfahren zur Verbesserung der Oberflächenbeschaffenheit von eisenhaltigen Materialien mit einem Aluminium-Zink-Legierungsüberzug

Also Published As

Publication number Publication date
JPS59205463A (ja) 1984-11-21
ES8501805A1 (es) 1984-12-01
DE122856T1 (de) 1985-05-23
FR2544337B1 (fr) 1985-08-09
DE3471691D1 (en) 1988-07-07
FR2544337A1 (fr) 1984-10-19
CA1251364A (fr) 1989-03-21
EP0122856A1 (fr) 1984-10-24
ES531555A0 (es) 1984-12-01
US4612215A (en) 1986-09-16
ATE34780T1 (de) 1988-06-15
JPH0534424B2 (enrdf_load_stackoverflow) 1993-05-24

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