[go: up one dir, main page]

WO2002014573A1 - Tole d'acier protegee contre la corrosion et son procede de production - Google Patents

Tole d'acier protegee contre la corrosion et son procede de production Download PDF

Info

Publication number
WO2002014573A1
WO2002014573A1 PCT/DE2001/002886 DE0102886W WO0214573A1 WO 2002014573 A1 WO2002014573 A1 WO 2002014573A1 DE 0102886 W DE0102886 W DE 0102886W WO 0214573 A1 WO0214573 A1 WO 0214573A1
Authority
WO
WIPO (PCT)
Prior art keywords
zinc
coating
corrosion
steel sheet
metals
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.)
Ceased
Application number
PCT/DE2001/002886
Other languages
German (de)
English (en)
Inventor
Matthias Kretschmar
Werner Bechem
Rolf Brisberger
Bernd Schuhmacher
Christian Schwerdt
Jürgen Stahl
Dietrich Wolfhard
Guido Grundmeier
Manfred Kammer
Ulf Seyfert
Peter Siemroth
Bernd Schultrich
Otmar Zimmer
Steffen Schenk
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to AU2001278409A priority Critical patent/AU2001278409A1/en
Publication of WO2002014573A1 publication Critical patent/WO2002014573A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
    • C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
    • 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

Definitions

  • the invention relates to a corrosion-protected steel sheet and a method for its production, in particular in a continuous process.
  • These steel sheets are widely used in general mechanical engineering, the construction and automotive industries and in particular the invention relates to corrosion-protected and very easily formable steel sheets which are used in particular in the construction, household appliances and automotive industries.
  • Zinc coatings ensure very good corrosion protection for steel sheets due to their barrier effect and cathodic protection.
  • the zinc coatings are applied on a large industrial scale, preferably in a continuous finishing process based on hot dip (hot dip galvanizing) or electrolytic deposition applied.
  • the speed of the belts is up to 300 m / min, the width of the belts up to 2.5 m. These processes are characterized by a high level of economy and environmental compatibility.
  • the usual thicknesses of the zinc coatings are between 2.5 and 25 ⁇ m depending on the intended use and process.
  • the further processing of the galvanized steel sheets into commodities takes place by forming, joining, organic coating (e.g. painting) or in another way.
  • the resulting demands on the use and processing properties of the galvanized steel sheets are correspondingly diverse.
  • Surface quality, forming behavior, suitability for different joining processes e.g. spot welding, bonding, ...)
  • Phosphatability, cataphoretic paintability and paint adhesion are important quality features of corrosion-protected steel sheets.
  • a particularly important feature is the formability of the coatings, i.e. their ability to withstand even greater strain, e.g. to withstand deep drawing without serious damage.
  • the formability of the coatings of hot-dip galvanized (Z) and electrolytically galvanized (ZE) steel sheet is comparatively very good due to the relatively high ductility of pure zinc.
  • ZN Zn / Ni-coated steel sheet
  • Galfan® and Galvalume® are both characterized by improved corrosion resistance compared to hot-dip and electrolytically galvanized steel sheet.
  • Galvannealed thin sheet (ZF) and zinc-nickel refined steel sheet (ZN) are both characterized by a reduced dissolution current density under corrosive conditions and thus by a higher corrosion resistance compared to sheet steel with pure zinc coatings.
  • ZF zinc-nickel refined steel sheet
  • ZN zinc-nickel refined steel sheet
  • stabilizing metal "enough” That very small proportions (around 1% by mass) of the metal causing the stabilizing effect (hereinafter “stabilizing metal "enough) to slow down the corrosion rate of the zinc alloy coatings significantly compared to the stabilization metal-free zinc or zinc alloy coatings.
  • stabilizing metal The microstructural distribution of the stabilization metal in the coatings is of great importance for the corrosion stability of the coatings and their forming behavior The previous process approaches for the production of such zinc alloy coatings reveal considerable deficits.
  • Zn-Mg alloy coatings can be described by physical vapor deposition (PVD processes), namely co-evaporation of Zn and Mg, described, for example, in JP 632 492 58 or by vapor deposition of layer systems that consist of several successive layers of alternating Zn and Mg exist; optionally, there is also an additional thermal treatment, described, for example, in JP 072 686 04, JP 072 686 05, JP 645 091, US 5 002 837 and EP 0 730 045.
  • PVD processes physical vapor deposition
  • the coatings produced do show some very good corrosion resistance, however, with regard to the formability in general clear deficits compared to pure zinc coatings.
  • the microstructure of the coatings obtained is unfavorable, since the overall proportion of intermetallic phases in the coating is generally too high and the magnesium-containing phases are unfavorably distributed, which has a negative effect both on the corrosion resistance and on the forming behavior of the coatings.
  • the use of the hot-dip process is technically even more problematic.
  • the decisive disadvantage of the coating aimed for with the specified diffusion heat treatment, characterized by a superficial Mg-containing layer, is, however, that the additional stabilization of the coating corrosion products described no longer provides an additional anti-corrosion effect as soon as the superficial Mg-containing layer has been consumed as a result of corrosion ,
  • JP 632 451 70 describes a method in which a magnesium-containing top layer is applied to the still molten zinc coating by blowing a magnesium-zinc powder directly after the steel strip emerges from the molten zinc bath during the continuous hot-dip galvanizing.
  • the resulting coating microstructure is also to be classified as unfavorable here, since the magnesium-containing particles are predominantly in an area near the coating surface and, in so far as there is no additional corrosion protection effect due to the stabilization of the coating corrosion products described, as soon as the superficial magnesium-containing layer has been used up as a result of corrosion ,
  • the invention is therefore based on the object of providing corrosion-protective zinc alloy coatings for sheet steel which have a favorable microstructural distribution of certain alloy metals, the effect of which is that the corrosion products formed during the corrosion are stabilized and a significantly slower dissolution of these coatings in a corrosive environment is achieved becomes (stabilizing effect), which should be the case in particular for the alloy metal magnesium.
  • the object of the invention is that the method for producing the zinc alloy coatings described above enables inexpensive finishing of steel strip for mass requirements in a continuous process, can be integrated into existing continuous systems and should not cause any additional environmental pollution.
  • these tasks relate to the corrosion-protected steel sheets with a solution according to one or more of claims 1 to 9 and concerning the method for producing the corrosion-protected steel sheets with a solution according to one or more of claims 10 to 21.
  • the corrosion-protected steel sheet consists of low-carbon steel sheet with a zinc or zinc alloy coating produced by hot-dip coating, electrolytic deposition or physical vapor phase deposition. It is characterized according to the invention in that locally concentrated deposits of metals or alloys of these metals are contained in this coating with an effect which reduces the rate of corrosion of the zinc or zinc alloy coating, so that a decisive improvement in the corrosion resistance is achieved and at the same time the integral mechanical properties, in particular the deformation properties of the original zinc or zinc alloy coating are not or not significantly influenced.
  • the depots as described in at least one of claims 1 to 9 are formed in which one or more multiphase alloys with a lower melting temperature than that of the uninfluenced zinc or zinc alloy coating are specifically formed locally and then cooled.
  • this method is characterized in that the targeted local formation of a multi-phase alloy with a melting temperature lower than that of the uninfluenced zinc or zinc alloy coating results in local melts, from which after their solidification during the cooling of the coating, the deposits as they occur are described in one of claims 1 to 9, form.
  • the stabilizing metal is only present in preferred areas of the coating, for example in the vicinity of the coating surface or the coating / steel interface.
  • the investigations carried out have shown that the zinc alloy coating should preferably have locally concentrated reservoirs or depots of the stabilizing metal. Ions of the stabilizing metal are released from these depots in a corrosive environment, which then exert a stabilizing effect on the coating corrosion products, as a result of which the coating corrosion is decisively slowed down. Due to the high mobility of the stabilization details, the horizontal (ie parallel to the coating surface) distances of the individual depots can be 100 ⁇ m and more.
  • FIG. 1 schematically shows a cross section through a zinc alloy coating alloyed with a stabilizing metal with a microstructure advantageously designed according to the invention, characterized by locally concentrated depots (1) which contain the stabilizing metal.
  • the light areas (2) consist of pure zinc or zinc alloy phases or a mixture of zinc-containing phases and phases of one or more metals other than zinc, for example aluminum, and contain little or no stabilizing metal.
  • At intervals of preferably 1 to 500 ⁇ m locally limited areas with a width of preferably a few ⁇ m, characterized by a multi-phase structure, have formed, which extend from the coating surface to the interface with the steel.
  • the above-mentioned locally concentrated depots containing stabilization metal are present with a preferred size of 0.1 to 5 ⁇ m, ie significantly smaller than the coating thickness.
  • the vertical (ie perpendicular to the coating surface) distances of the depots containing stabilization metal in these multiphase areas are very small and are typically of the same order of magnitude as or less than the size of the depots themselves. In contrast to the prior art, this ensures that sufficient deposits of stabilizing metal are available in every zone of the zinc alloy coating produced in this way, from the surface to the interface with the steel and thus at every stage of the corrosion-related removal of the coating.
  • the areas with potentially brittle intermetallic phases containing stabilizing metal remain locally limited, contrary to the prior art, and these phases are very finely distributed.
  • the vast majority of the coating still consists of the ductile pure zinc phase or the original zinc alloy phases or phase mixtures. This ensures favorable forming behavior of the zinc alloy coatings.
  • the starting material for the process for producing the corrosion-protected steel sheets with the stabilizing metal-containing zinc alloy coatings and the described advantageously designed microstructure is steel sheet, on which a zinc or zinc alloy coating has already been applied. It is immaterial whether the deposition of these zinc or zinc alloy coatings was carried out electrolytically, in the hot-dip process or by means of another process, for example vapor deposition.
  • the thickness of the coatings is preferably in the usual range of delivery of galvanized or alloy galvanized steel sheets (2.5 to 25 ⁇ m).
  • the galvanized or alloy-galvanized steel sheet is unwound in the form of coils or fed directly from a previous processing station. The following treatment or process steps are explained with reference to FIG. 2.
  • a cover layer of the stabilizing metal (s) or a cover layer of an alloy containing the stabilizing metal (s), for example aluminum-containing alloys is evaporated.
  • the thickness of this cover layer is preferably significantly less than that of the original zinc or zinc alloy coating.
  • Activated vapor deposition processes are particularly suitable for applying the top layer. Both pure vacuum arc evaporation and a combination of vacuum arc and electron beam evaporation can be used. Activated vapor deposition processes can not only produce much denser layers, as is generally known, but can also significantly accelerate the formation of alloys in the cover layers with the coating underneath.
  • the steel strip After passing through the vacuum coating station, the steel strip enters a station filled with protective gas, the working pressure of which is generally slightly above atmospheric pressure in order to prevent contamination of the protective gas from the surrounding air.
  • This low-oxygen atmosphere can consist of the inert gases helium or argon or alternatively also of nitrogen or mixtures of nitrogen and hydrogen.
  • the steel strip is heated to a temperature T by a suitable heating at a very high rate and with a heating power density of more than 250 kW / m 2 , which is above the melting temperature of the forming stabilizing metal-containing mixed phase, but below the melting temperature of the pure zinc phase ( 419.6 ° C), or the zinc alloy coating is in the initial state (ie before vapor deposition with the stabilizing metal), heated.
  • Corresponding induction heaters are state of the art and represent an effective and cost-effective heating method. With a belt speed of typically 200 m / min and an inductor length of a few ten centimeters, the belt runs through the heater in 0.1 seconds. During this exposure time, the entire band is instantly evenly warmed. It is then in a subsequent stop in the same protective gas atmosphere as the heating at the Melting temperature of the stabilizing metal-containing mixed phase or above for a short time (max. 30 s).
  • the strip is cooled by blowing with protective gas, the composition of which preferably corresponds to the atmosphere of the heating and holding section. Rather, it is crucial that the coating is cooled until it has completely solidified with a sufficiently high cooling rate with a cooling power density of more than 150 kW / m 2 .
  • the alloy galvanized steel strip After the alloy galvanized steel strip has cooled to a temperature below 280 ° C, it can be passed over a deflection roller without the strip and deflection roller sticking together. The strip can then be cooled further in a further section, the gas of which already has a relatively high oxygen content.
  • a process modification is possible in such a way that a defined surface oxidation of the alloy coating is stimulated by the targeted addition of oxygen into the heat treatment section and / or into the cooling section immediately after the stopping section, which both leads to a further improvement of the corrosion protection and also has a positive effect affects the paintability of the galvanized steel sheet.
  • the device described for vapor deposition of the steel strip previously provided with a zinc or zinc alloy coating and subsequent heat treatment in a low-oxygen atmosphere is distinguished by a very compact design. It can therefore not only be implemented as an independent continuous strip treatment line, but can also advantageously be integrated into existing steel strip finishing lines, for example for continuous hot-dip or electrolytic galvanizing.
  • Another advantage of the process described is that the coating present in the initial state, the largest part in terms of quantity of the entire coating, is applied with the proven, efficient continuous process of hot dipping or electrolytic deposition.
  • the cover layers vapor-deposited with the PVD technology are very thin, so that the problem of this process, which in some cases is only relatively low in efficiency, is hardly significant.
  • the application of the cover layer to the subsequent heat treatment of the steel strip does not constitute any significant additional environmental pollution, since there are no exhaust gases or polluting waste water.
  • Fig. 3 the processes of the alloy formation caused by the previously described short-term heat treatment in the previously coated with the stabilizing metal zinc and zinc alloy coating are shown schematically.
  • the formation of a layer containing the stabilization metal near the surface takes place in the first stage (2).
  • This has a lower melting temperature than the pure zinc phase or the original zinc-containing alloy, and, due to the heat treatment, a liquid phase near the surface is formed. This melting process continues locally in the zinc or zinc alloy coating.
  • the further formation of alloys and thus the distribution of the stabilizing metal is considerably accelerated; it preferably takes place, for example, at favorably oriented grain boundaries of the original coating and continues to the coating / steel interface (3, 4).
  • a thin melt film can remain on the coating surface during the entire alloy formation caused by the heat treatment. This promotes rapid material transport along the surface and also ensures a consistently smooth coating surface and thus a high surface quality.
  • the described alloy formation process can proceed until the primary zinc or zinc alloy phase grains have completely dissolved (5, 6, 7).
  • solid intermetallic stabilization metal-containing phases which represent the stabilization metal depots already described, separate out from the supersaturated alloy phase containing stabilization metal.
  • the dispersity of these depots strongly depends on the cooling rate. If the cooling rate is sufficiently high, a finely dispersed structure is advantageously formed, ie the size of the depots is significantly smaller than the total coating thickness, as shown schematically in (8).
  • Essential process parameters in the formation of the microstructure of the coatings are accordingly: thickness and chemical composition of the vapor-deposited layer containing stabilization metal, heating temperature and heating speed, holding time, cooling speed and the process gases used. Appropriate selection and coordination of these process parameters allows an advantageous microstructure of the coatings to be set in a targeted manner.
  • the new zinc alloy coatings have significantly improved corrosion protection properties compared to pure zinc coatings, and thanks to the favorable distribution of the stabilizing metal, characterized by locally concentrated deposits, it is ensured that its effectiveness is guaranteed over the entire life of the coating.
  • the method according to the invention presented represents an inexpensive method of manufacturing corrosion-protected steel sheet, which can be carried out in a continuous process and can preferably be integrated into existing continuous systems, for example for hot-dip or electrolytic galvanizing. With these new zinc alloy coatings there is considerable potential to take into account the constantly increasing requirements for the corrosion protection of sheet steel products with improved processability, in particular formability.
  • FIG. 4 shows a metallographic micrograph of a zinc alloy coating alloyed with the stabilizing metal magnesium with a microstructure which is advantageously designed according to the invention.
  • This coating was produced by vapor-coating hot-dip galvanized sheet (coating thickness approx. 10 ⁇ m) with an approx. 330 nm thick magnesium layer and subsequent brief heat treatment at approx. 396 ° C in an atmosphere of a mixture of approx. 95% nitrogen and 5% hydrogen.
  • the bright areas consist of pure zinc and contain practically no magnesium.
  • areas with a finely dispersed eutectic structure have formed that extend from the coating surface to the interface with the steel.
  • This eutectic consists of pure zinc and the intermetallic phase MgZn 2 , recognizable as darker particles in the micrograph.
  • the MgZn 2 particles formed represent the required locally concentrated depots of the stabilizing metal magnesium.
  • the eutectic regions have formed by locally melting the coating near favorable zinc grain boundaries. This local melting and the associated very rapid diffusion of the magnesium, contrary to the prior art, ensures that sufficient deposits containing magnesium are available in every zone of the zinc alloy coating from the surface to the interface with the steel. Highly mobile magnesium ions are then released from these depots in a corrosive environment at every stage of coating corrosion, which can then have a stabilizing effect on the coating corrosion products, which in turn slows down the coating corrosion.
  • the areas with the brittle intermetallic Zn-Mg phases remain locally limited, and these phases are very finely distributed.
  • Most of the coating still consists of the ductile pure zinc phase. This ensures favorable forming behavior of the zinc alloy coating produced in this way.
  • the steel strip is treated in a continuous system.
  • a tape storage device in front of the connecting device ensures that the other stations are continuously fed with tape at a constant speed of 120 m / min.
  • the belt After the belt has undergone an aqueous pre-cleaning and the oil residues and other impurities have been removed, the belt enters a vacuum chamber through several pressure stages.
  • a first vacuum section the strip is freed of any last impurities and superficial oxide layers by a plasma cleaning, as is known from the hard material coating.
  • the working pressure in this section is 1 Pa, the working gas is argon.
  • a 330 nm thick magnesium layer is evaporated.
  • a combination process of electron beam and vacuum arc evaporation is used, which is characterized in that high-current pulse arc discharges (the pulse current can be up to 5000 A) are ignited in an electron beam-heated crucible with a high repetition frequency (a few tens of Hz).
  • the working pressure in this section is 10 "2 Pa.
  • the steel strip then leaves the vacuum chamber through a further pressure stage and enters a hermetically sealed section which contains forming gas (95% N 2 , 5% H 2 ) under slight excess pressure.
  • the strip passes through an inductor and is heated with a heating power density of more than 250 kW / m 2 to a temperature of 396 ° C.
  • the heating unit After the heating unit, it runs uncooled for 1 s, after which a 10 m long cooling section begins, in which the strip is intensively blown with protective gas, which is removed from the protective gas section in a closed circuit, cooled intensively and then blown back onto the strip, with a cooling power density of more than 150 kW / m 2. At the end of this section it is below 280 ° C cooled and is guided over several rollers and a gas lock into a second cooling chamber, in which it is further cooled with normal indoor air.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

L'invention concerne une tôle d'acier protégée contre la corrosion et un procédé permettant de produire cette dernière, notamment en continu. Dans la tôle d'acier selon l'invention, le revêtement de zinc ou d'alliage de zinc contient des dépôts localisés (1) de métaux ou d'alliages de ces métaux qui réduisent la vitesse de la corrosion dudit revêtement de zinc ou d'alliage de zinc. Selon le procédé de l'invention, la formation localisée et ciblée d'un alliage à phases multiples, présentant une température de fusion inférieure à celle du revêtement de zinc ou d'alliage de zinc non affecté, provoque des fusions localisées qui, après solidification pendant le refroidissement du revêtement, donnent lieu à la formation des dépôts (1) mentionnés ci-dessus.
PCT/DE2001/002886 2000-08-11 2001-07-27 Tole d'acier protegee contre la corrosion et son procede de production Ceased WO2002014573A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001278409A AU2001278409A1 (en) 2000-08-11 2001-07-27 Corrosion-proofed sheet steel and method for production thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10039375.6 2000-08-11
DE10039375A DE10039375A1 (de) 2000-08-11 2000-08-11 Korrosionsgeschütztes Stahlblech und Verfahren zu seiner Herstellung

Publications (1)

Publication Number Publication Date
WO2002014573A1 true WO2002014573A1 (fr) 2002-02-21

Family

ID=7652182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/002886 Ceased WO2002014573A1 (fr) 2000-08-11 2001-07-27 Tole d'acier protegee contre la corrosion et son procede de production

Country Status (3)

Country Link
AU (1) AU2001278409A1 (fr)
DE (1) DE10039375A1 (fr)
WO (1) WO2002014573A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004053203A3 (fr) * 2002-12-10 2004-12-23 Thyssenkrupp Stahl Ag Procede de depot electrolytique de magnesium sur une tole galvanisee
EP1518941A1 (fr) * 2003-09-24 2005-03-30 Sidmar N.V. Procédé et dispositif pour la fabrication des produits en acier avec un revêtement métallique
FR2877157A1 (fr) * 2004-10-26 2006-04-28 Mitsubishi Electric Corp Machine electrique rotative
WO2006045570A1 (fr) * 2004-10-28 2006-05-04 Thyssenkrupp Steel Ag Procede pour produire une plaque de metal en acier resistant a la corrosion
EP1767670A1 (fr) * 2005-09-23 2007-03-28 ThyssenKrupp Steel AG Procédé de fabrication d'un produit plat en acie protégé contre la corrosion
WO2007135092A1 (fr) * 2006-05-18 2007-11-29 Thyssenkrupp Steel Ag Tôle d'acier munie d'un système de protection contre la corrosion et procédé de revêtement d'une tôle d'acier avec un tel système de protection contre la corrosion
EP2048261A1 (fr) 2007-10-12 2009-04-15 ArcelorMittal France Générateur de vapeur industriel pour le dépôt d'un revêtement d'alliage sur une bande métallique
EP2085492A1 (fr) * 2007-12-28 2009-08-05 Posco Plaque d'acier recouverte d'alliage de zinc ayant une bonne adhésion hermétique et résistance à la corrosion et son processus de fabrication
EP2098607A1 (fr) * 2008-02-25 2009-09-09 ArcelorMittal France Procédé de revêtement d'une bande métallique et installation de mise en oeuvre du procédé
WO2009130051A1 (fr) 2008-04-24 2009-10-29 Bodycote Wärmebehandlung GmbH Procédé de shérardisation
EP2199425A1 (fr) 2008-12-18 2010-06-23 ArcelorMittal France Générateur de vapeur industriel pour le dépôt d'un revêtement d'alliage sur une bande métallique (II)
WO2013091889A1 (fr) * 2011-12-23 2013-06-27 Tata Steel Nederland Technology Bv Substrat doté d'un revêtement à deux couches
US20130206284A1 (en) * 2010-06-14 2013-08-15 Thyssenkrupp Steel Europe Ag Method for Producing a Hot-Formed and Hardened Steel Component Coated with a Metallic Anti-Corrosion Coating from a Sheet Steel Product
CN107338406A (zh) * 2017-05-16 2017-11-10 江苏鑫蕴模塑科技有限公司 一种镀铝工艺
EP2239350B1 (fr) * 2009-04-08 2019-10-16 Bayerische Motoren Werke Aktiengesellschaft Pièces de formage en tôle traitées à chaud à partir d'un matériau en tôle d'acier et dotées d'un revêtement anticorrosion

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE478971T1 (de) * 2003-07-29 2010-09-15 Voestalpine Stahl Gmbh Verfahren zum herstellen von geharteten bauteilen aus stahlblech
DE102005033773A1 (de) * 2005-07-15 2007-01-18 Thyssenkrupp Steel Ag Verfahren zur Herstellung von korrosionsgeschütztem Stahlblech
DE102007026061A1 (de) * 2007-06-01 2008-12-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verschleiß- und korrosionsbeständiges Bauteil und Verfahren zu seiner Herstellung
DE102009022515B4 (de) * 2009-05-25 2015-07-02 Thyssenkrupp Steel Europe Ag Verfahren zum Herstellen eines Stahlflachprodukts und Stahlflachprodukt
DE102010030465B4 (de) * 2010-06-24 2023-12-07 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Blechformteils aus einem höherfesten Stahlblechmaterial mit einer elektrolytisch aufgebrachten Zink-Nickel-Beschichtung
CN104328370B (zh) * 2014-11-11 2017-02-15 武汉钢铁(集团)公司 一种热镀锌镁合金钢板的生产方法
DE102022133485A1 (de) 2022-12-15 2024-06-20 Thyssenkrupp Steel Europe Ag Stahlblech mit optimiertem Metallüberzug
DE102023106421A1 (de) 2023-03-15 2024-09-19 Thyssenkrupp Steel Europe Ag Dressiertes und beschichtetes Stahlblech

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002837A (en) * 1988-07-06 1991-03-26 Kabushiki Kaisha Kobe Seiko Sho Zn-Mg alloy vapor deposition plated metals of high corrosion resistance, as well as method of producing them
JPH07268605A (ja) * 1994-03-29 1995-10-17 Nisshin Steel Co Ltd 合金化Ｚｎ−Ｍｇ蒸着めっき鋼板の製造方法
EP0905270A2 (fr) * 1996-12-13 1999-03-31 Nisshin Steel Co., Ltd. TOLE D'ACIER PROTEGE PAR BAIN CHAUD DE Zn-Al-Mg, TRES RESISTANTE A LA CORROSION ET AGREABLE D'ASPECT, ET PROCEDE DE PRODUCTION CORRESPONDANT

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349236C2 (de) * 1973-10-01 1982-05-13 Bethlehem Steel Corp., Bethlehem, Pa. Verfahren zum Herstellen eines eisenhaltigen Gegenstandes mit einem Aluminium/Zink-Überzug und seine Anwendung auf Bleche, Bänder und Drähte aus Stahl
JP2755387B2 (ja) * 1988-04-12 1998-05-20 大洋製鋼株式会社 プレコート鋼板用溶融亜鉛アルミニウム合金めっき鋼板の製造方法およびプレコート鋼板
DE3828911C1 (en) * 1988-08-26 1989-02-09 Solms, Juergen, Dipl.-Ing., 5912 Hilchenbach, De Process for the hot metallisation of piece goods
JP3357467B2 (ja) * 1994-07-20 2002-12-16 川崎製鉄株式会社 耐食性と耐摩耗性に優れた溶融亜鉛めっき鋼材およびその製造方法
JP3357471B2 (ja) * 1994-08-22 2002-12-16 川崎製鉄株式会社 耐食性に優れたＺｎ−Ｍｇ−Ａｌ系溶融めっき鋼材およびその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002837A (en) * 1988-07-06 1991-03-26 Kabushiki Kaisha Kobe Seiko Sho Zn-Mg alloy vapor deposition plated metals of high corrosion resistance, as well as method of producing them
JPH07268605A (ja) * 1994-03-29 1995-10-17 Nisshin Steel Co Ltd 合金化Ｚｎ−Ｍｇ蒸着めっき鋼板の製造方法
EP0905270A2 (fr) * 1996-12-13 1999-03-31 Nisshin Steel Co., Ltd. TOLE D'ACIER PROTEGE PAR BAIN CHAUD DE Zn-Al-Mg, TRES RESISTANTE A LA CORROSION ET AGREABLE D'ASPECT, ET PROCEDE DE PRODUCTION CORRESPONDANT

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004053203A3 (fr) * 2002-12-10 2004-12-23 Thyssenkrupp Stahl Ag Procede de depot electrolytique de magnesium sur une tole galvanisee
EP1518941A1 (fr) * 2003-09-24 2005-03-30 Sidmar N.V. Procédé et dispositif pour la fabrication des produits en acier avec un revêtement métallique
WO2005028695A1 (fr) * 2003-09-24 2005-03-31 Usinor S.A. Procede et appareil de production de produits en acier revetus de metal
US7998535B2 (en) 2003-09-24 2011-08-16 Arcelormittal France Method and apparatus for the production of metal coated steel products
FR2877157A1 (fr) * 2004-10-26 2006-04-28 Mitsubishi Electric Corp Machine electrique rotative
WO2006045570A1 (fr) * 2004-10-28 2006-05-04 Thyssenkrupp Steel Ag Procede pour produire une plaque de metal en acier resistant a la corrosion
WO2007033992A3 (fr) * 2005-09-23 2007-07-26 Thyssenkrupp Steel Ag Procede de fabrication d'un produit en tole d'acier protege contre la corrosion
EP1767670A1 (fr) * 2005-09-23 2007-03-28 ThyssenKrupp Steel AG Procédé de fabrication d'un produit plat en acie protégé contre la corrosion
WO2007135092A1 (fr) * 2006-05-18 2007-11-29 Thyssenkrupp Steel Ag Tôle d'acier munie d'un système de protection contre la corrosion et procédé de revêtement d'une tôle d'acier avec un tel système de protection contre la corrosion
EP2048261A1 (fr) 2007-10-12 2009-04-15 ArcelorMittal France Générateur de vapeur industriel pour le dépôt d'un revêtement d'alliage sur une bande métallique
US11434560B2 (en) 2007-10-12 2022-09-06 Arcelormittal France Industrial vapour generator for the deposition of an alloy coating onto a metal strip
EP2085492A1 (fr) * 2007-12-28 2009-08-05 Posco Plaque d'acier recouverte d'alliage de zinc ayant une bonne adhésion hermétique et résistance à la corrosion et son processus de fabrication
EP2098607A1 (fr) * 2008-02-25 2009-09-09 ArcelorMittal France Procédé de revêtement d'une bande métallique et installation de mise en oeuvre du procédé
WO2009118466A1 (fr) * 2008-02-25 2009-10-01 Arcelormittal Investigacion Y Desarrollo Sl Procédé de revêtement d'une bande métallique et installation de mise en oeuvre du procédé
US10072327B2 (en) * 2008-02-25 2018-09-11 Arcelormittal Investigacion Desarrollo Sl Method for coating a metal strip and equipment for implementing said method
US20130061986A1 (en) * 2008-02-25 2013-03-14 Arcelormittal Investigacion Method for coating a metal strip and equipment for implementing said method
US11313023B2 (en) 2008-02-25 2022-04-26 Arcelormittal Equipment for coating a metal strip
WO2009130051A1 (fr) 2008-04-24 2009-10-29 Bodycote Wärmebehandlung GmbH Procédé de shérardisation
US10711339B2 (en) 2008-12-18 2020-07-14 Arcelormittal France Industrial vapor generator for depositing an alloy coating on a metal strip
EP2199425A1 (fr) 2008-12-18 2010-06-23 ArcelorMittal France Générateur de vapeur industriel pour le dépôt d'un revêtement d'alliage sur une bande métallique (II)
EP2239350B1 (fr) * 2009-04-08 2019-10-16 Bayerische Motoren Werke Aktiengesellschaft Pièces de formage en tôle traitées à chaud à partir d'un matériau en tôle d'acier et dotées d'un revêtement anticorrosion
US20130206284A1 (en) * 2010-06-14 2013-08-15 Thyssenkrupp Steel Europe Ag Method for Producing a Hot-Formed and Hardened Steel Component Coated with a Metallic Anti-Corrosion Coating from a Sheet Steel Product
EP2794951B1 (fr) 2011-12-23 2019-03-06 Tata Steel Nederland Technology B.V. Substrat avec double couche stratifiée
WO2013091889A1 (fr) * 2011-12-23 2013-06-27 Tata Steel Nederland Technology Bv Substrat doté d'un revêtement à deux couches
CN107338406A (zh) * 2017-05-16 2017-11-10 江苏鑫蕴模塑科技有限公司 一种镀铝工艺

Also Published As

Publication number Publication date
DE10039375A1 (de) 2002-03-28
AU2001278409A1 (en) 2002-02-25

Similar Documents

Publication Publication Date Title
WO2002014573A1 (fr) Tole d'acier protegee contre la corrosion et son procede de production
DE69606077T2 (de) Stahlblech mit korrosionsbeständiger Zweikomponentenschicht aus Zn-Mg sowie Verfahren zu dessen Herstellung
DE60220191T2 (de) Hochfestes feuerverzinktes galvanisiertes stahlblech und feuerverzinktes geglühtes stahlblech mit ermüdungsfestigkeit,korrosionsbeständigkeit,duktilität und plattierungshaftung,nach starker verformung und verfahren zu dessen herstellung
EP2235229B1 (fr) Procédé pour appliquer une couche de protection métallique sur un produit plat en acier laminé à chaud ou à froid contenant 6 - 30% en poids de mn
EP0756022B1 (fr) Tôle d'acier protégée contre la corrosion et procédé pour sa production
EP3663429B1 (fr) Dispositif de galvanisation à chaud
EP3215656B1 (fr) Procédé de production d'un revêtement anti-corrosion pour tôles d'acier trempables et revêtement anti-corrosion pour tôles d'acier trempables
EP2848709A1 (fr) Procédé de fabrication d'un composant en acier revêtu d'une coiffe métallique protégeant de la corrosion et composant en acier
EP1805342A1 (fr) Procede pour produire une plaque de metal en acier resistant a la corrosion
EP3610049A1 (fr) Produit plat en acier laminé à froid, recuit sur base, et procédé de fabrication s'y rapportant
EP3877564B1 (fr) Élément structural trempé comprenant un substrat en acier et un revêtement anticorrosion, élément structural correspondant pour la réalisation de l'élément structural trempé ainsi que procédé de fabrication et utilisation
DE102006047060A1 (de) Mit einem Korrosionsschutzsystem versehenes Stahlblech und Verfahren zum Beschichten eines Stahlblechs mit einem solchen Korrosionsschutzsystem
DE3606529C2 (fr)
DE102013101847B3 (de) Verfahren zur Herstellung eines korrosionsbeständigen Stahlblechs
DE102018222063A1 (de) Stahlsubstrat zur Herstellung eines warmumgeformten und pressgehärteten Stahlblechbauteils sowie Warmumformverfahren
EP3332048B1 (fr) Procédé de production d'un revêtement par immersion à chaud, galvanisé à base de zinc - magnésium et un produit plat en acier doté d'un tel revêtement
DE69305458T2 (de) A1-Si-Cr-BESCHICHTETE STAHLPLATTE UND DEREN HERSTELLUNG
EP1252354B1 (fr) Procede de fabrication d'un ruban d'acier dote d'une couverture de zinc
DE102021109973A1 (de) Verfahren zur Herstellung von schmelztauchbeschichteten Stahlflachprodukten
AT412403B (de) Korrosionsgeschütztes stahlblech
DE102023119937A1 (de) Verfahren zur Feuerverzinkung von Bauteilen
EP1743956A2 (fr) Méthode de fabrication d'une plaque d'acier revêtue ayant résistance à la corrosion
DE3903856C2 (fr)
EP2955249A1 (fr) Produit en acier plat doté d'un système anticorrosion et procédé de fabrication d'un produit en acier plat revêtu d'un système anticorrosion
WO2011036306A2 (fr) Protection contre la corrosion à base d'alliage au zinc

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP