EP2611946A1 - Procédé de revêtement par immersion à chaud d'un produit plat en acier - Google Patents

Procédé de revêtement par immersion à chaud d'un produit plat en acier

Info

Publication number
EP2611946A1
EP2611946A1 EP11745783.8A EP11745783A EP2611946A1 EP 2611946 A1 EP2611946 A1 EP 2611946A1 EP 11745783 A EP11745783 A EP 11745783A EP 2611946 A1 EP2611946 A1 EP 2611946A1
Authority
EP
European Patent Office
Prior art keywords
atmosphere
temperature
flat steel
steel product
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11745783.8A
Other languages
German (de)
English (en)
Other versions
EP2611946B1 (fr
Inventor
Marc Blumenau
Hans-Joachim Heiler
Fred Jindra
Rudolf Schönenberg
Hans-Joachim Krautschick
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
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 ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP2611946A1 publication Critical patent/EP2611946A1/fr
Application granted granted Critical
Publication of EP2611946B1 publication Critical patent/EP2611946B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—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
    • C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising 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
    • C23C2/02—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
    • C23C2/0224—Two or more thermal pretreatments
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—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
    • C23C2/40—Plates; Strips

Definitions

  • the invention relates to a method for
  • Alloy elements such as nickel or molybdenum can support this passivation.
  • the coating of steels with at least 5.0 wt .-% Cr is a special challenge.
  • Continuous furnace has been annealed recrystallizing, immersed briefly in a metallic molten bath, typically on zinc, aluminum or their
  • Heat treatment performed iron oxide layer that the previously formed iron oxide layer is reduced at least on its surface in pure iron. That so
  • pretreated flat steel product can then be hot-dip-coated in the heated state in a melt bath containing at least 85% by weight of zinc and / or aluminum with the metallic coating.
  • a melt bath containing at least 85% by weight of zinc and / or aluminum with the metallic coating.
  • the first type of process involves annealing under a strongly reducing atmosphere.
  • each steel strip is passed from the furnace into the melt bath,> 97 vol .-% H2 / N2 - atmosphere with a dew point of ⁇ -29 ° C prevail.
  • a third variant of the first type of process is known from US 5,591,531.
  • steel strips of up to 30% by weight Cr are subjected to bell annealing, in which an iron-rich surface layer is produced.
  • the actual annealing should then take place according to one of the two variants of the first type of method explained above.
  • a hot-dip coating an Al or AlSi melt is also used.
  • the second known type of method is based on
  • Pre-oxidation A first variant of this second type of process is described in JP 3111546 A. According to this known method, a steel strip alloyed with 10.0-25.0 wt.% Cr is added in a directly fired preheater
  • JP 5311380 A according to a second variant of the second type of method, a similar manner is used
  • the pre-oxidation also takes place during a direct heating up to a temperature between 550 - 750 ° C by regulating the ⁇ value to 0.9 - 1.5.
  • the reduction of the FeO layer then takes place under a reducing atmosphere at a
  • Holding temperature which is about 800 ° C or max. 1050 ° C is enough.
  • the first type of process can only be implemented with great effort in everyday operations at a hot-dip coating plant designed for conventionally alloyed steel. The necessary high
  • the object of the invention was to provide a method which it
  • Process sequence completed process first heat-treated in a continuous furnace and then immediately surface-refined in-line. Depending on the desired
  • Use according to the invention can be a zinc, zinc / aluminum, zinc / magnesium, aluminum or
  • Aluminum / silicon hot dip coating can be applied.
  • the process is carried out with a metallic protective coating which protects against corrosion and comprises, for this purpose, the following steps, which are carried out in a continuous successive sequence: a) heating of the product within 1 to 30 seconds
  • the heating is carried out under an inert or reducing heating atmosphere, - within the pre-oxidation temperature window for 1 - 15 s, the heating is carried out under an oxidizing pre-oxidation atmosphere to cause a pre-oxidation of the surface of the flat steel product, and
  • the heating is again carried out under an inert or reducing atmosphere until the holding temperature is reached; c) holding the pre-oxidized steel flat product at the holding temperature for 10 - 120 s below a
  • the heating phase (step a)) should preferably take only 1 to 5 seconds.
  • step a) the inventive rapid heating (step a)) with the help of a so-called “booster heater” perform as they
  • heating steel flat product is brought into direct contact with the flame generated by the burner, wherein set within the flame, the air ratio ⁇ depending on the starting temperature and / or the target temperature becomes.
  • the temperature, atmosphere and ⁇ value of the booster flames are adjusted so that non-reactive or reducing thermodynamic conditions prevail over the metal / metal oxide equilibria of the alloying elements. Oxidation of the steel surface during the operation a) is mandatory to avoid.
  • Voroxidationsatmosphere can contain, for example, H 2 O, CO or CO 2 as inevitable impurities due to production.
  • step a) While the heating atmosphere maintained in step a) should be oxygen-free, ie in its 0 2 possibly present in technically unavoidable, ineffective amounts, the Voroxidationsatmospotrore addition of 2 and technically unavoidable impurities 0.1 - 3.0 vol .-% 0 2 at a dew point of -20 ° C to +25 ° C in order to achieve the desired oxidation result.
  • the pre-oxidation (step b) typically takes 1 to 15 seconds.
  • the oxidation potential at the gas burners used can be adjusted by adjusting the air ratio ⁇ in the strip surrounding atmosphere are generated.
  • the heating in the DFF furnace has the additional advantage that on the surface of the flat steel product existing organic pollutants are removed by combustion.
  • RTF Radiant Tube Furnace
  • the steel flat product is to avoid an external chromium oxide layer on the
  • Oxidation temperature is present, the predetermined N 2 / H 2 - glow atmosphere additionally with 0.1 - 3.0 vol .-% O 2
  • Oxygen-free atmosphere is maintained.
  • This oxidizing atmosphere can be specifically adjusted in a DFF plant that in the respective
  • Furnace section a ⁇ -values> 1 is set.
  • a furnace zone which is sealed off from the preceding and the subsequently passed through region can be formed, in which the oxygen-containing atmosphere exists.
  • the pre-oxidation can also take place via an additional intermediate booster device.
  • Oxidation portion of the furnace point maintained atmosphere may be between -20 - +25 ° C to.
  • Heat treatment line are performed in which a booster device, a DFF furnace and / or a RTF furnace are combined with each other and in which the
  • Oven part of a holding or cooling zone connects, which merges into a trunk zone, which in the respective
  • step b) the steel flat product is further heated to the desired holding temperature of 750-950 ° C., starting from the heating temperature reached after step a), 100-600 ° C.
  • the holding temperature can be limited to 750-850 ° C.
  • the steel flat product occurs in the hardwood Condition in the step a), it has proved to be useful to set the holding temperature to 800 - 850 ° C in order to hold a
  • Step c) In addition to the recrystallization of the microstructure, if necessary, during the holding phase (step c)), the previously produced FeO layer is adjusted to a corresponding value
  • the external Cr oxidation is additionally inhibited.
  • the duration of the holding phase will in practice typically be 10-120 s, with today available Plants a holding period of 30 - 60 s as optimal
  • step c) Following holding (step c)) and optional overaging treatment
  • Step d the flat steel product is cooled to the respective melt bath temperature and passed through a per se known trunk structure in the respective melt bath (step ej). It has proved to be particularly advantageous for the wetting result, if the trunk atmosphere has a dew point of -80 to -25 ° C, especially less than -40 ° C. Such a deep dew point can in practice by an additional N 2 - or H 2 feed directly into the
  • melt bath charged in a suitable melt bath vessel of a type known per se is subsequently prepared from the one according to the invention
  • Table 1 shows typical temperature ranges for coatings on Zn (eg Zn, ZnAl, ZnMg or ZnMgAl coatings) and Al based (eg AlZn, AlSi coatings) the immersed the flat steel product in the respective melt bath, as well as the appropriate range of the temperature of the respective melt bath specified.
  • Zn eg Zn, ZnAl, ZnMg or ZnMgAl coatings
  • Al based eg AlZn, AlSi coatings
  • Aging temperature to 650 - 780 ° C can be adjusted to achieve a further optimized adhesion of the coating.
  • the coating thickness is adjusted by means of stripping nozzles and the resulting hot-dip-coated, Cr-alloyed
  • Cooled flat steel product optionally, post-forming (skin pass rolling), passivation, lubrication and coiling of the flat steel product into a coil can be connected to the cooling.
  • the flat steel product coated according to the invention is suitable for one-, two- or multi-stage cold or hot forming into one component. Advantages over conventional flat steel products and not
  • hot-dip coated Cr-alloyed flat steel products result in particular in terms of the significantly improved corrosion resistance of components that in an environment with high corrosion potential
  • a particular versatility of the usability of coated steel flat products according to the invention also results from the fact that organic coatings or adhesives, which are optimized for galvanized surfaces, can now be used effectively also for components made of stainless Cr-alloyed steels. This extends the range of applications of Cr-alloyed steel products, eg. For example, for structural applications in automobiles
  • a stainless steel, from which the flat steel product according to the invention is produced, typically contains besides iron and unavoidable
  • Impurities (in% by weight) Cr 5.0-30.0%
  • Mn less than 6.0%, Mo: less than 5.0%, Ni: up to 30.0%, Si: less than 2.0%, Cu: less than 2.0%, Ti less than 1, 0%, Nb: less than 1.0%, V: less than 0.5%, N: less than 0.2%, Al: less than 0.2%, C: less than 0.1%.
  • Ni up to 30.0% by weight of Ni, it is possible to produce an austenitic or ferritic-austenitic duplex structure which further increases the formability of the flat steel product. Likewise thereby becomes the
  • steel sheets or strips which consist of a on the alloy (in% by weight) Cr: 10.0 - 13.0%, Ni: less than 3.0%, Mn: less than 1.0%, Ti: less than 1 , 0%, C: less than 0.03%.
  • steel flat products prepared according to the invention are to be galvanized, then they are suitable for this purpose
  • the melt bath may contain 0.1-8.0% Al, 0.2-8.0% Mg, ⁇ 2.0% Si, ⁇ 0.1% Pb, ⁇ 0.2% Ti, ⁇ 1% Ni, ⁇ 1% Cu, ⁇ 0.3% Co, ⁇ 0.5% Mn, ⁇ 0.1% Cr, ⁇ 0.5% Sr, ⁇ 3.0% Fe, ⁇ 0.1% B, ⁇ 0.1% Bi with the proviso that for the Al Al content% A1 and the Mg content% Mg of the melt formed ratio% Al /% Mg is:% Al /% Mg ⁇ 1.
  • composition of the melt bath gives optimum coating results in hot dip galvanizing when the melt bath temperature is 420-600 ° C.
  • steel flat products prepared according to the invention are to be flame-aluminized, then they are suitable for this purpose
  • melt baths in addition to aluminum and unavoidable, possibly traces of Zn-containing impurities (in wt.) Up to 15% Si and up to 5% Fe. Optimum coating results are obtained when the melt bath temperature is 660 - 680 ° C. The immersion time is during the fire aluminizing
  • the invention is based on a
  • the figure shows schematically a specific for the coating of a steel strip S according to the invention
  • the hot dip finishing plant 1 comprises a
  • Room temperature is heated to a temperature of 100 - 600 ° C.
  • a housing from the environment booster device is the
  • the steel strip S runs without interruption and without coming into contact with the ambient atmosphere U into a pre-oxidation zone 3.
  • the steel strip is heated to a strip temperature of up to 950 ° C. under an atmosphere which is formed from nitrogen and up to 50% by volume of H 2 and 0.1-3% by volume of O 2 and whose dew point is. 15 ° C to +25 ° C is maintained.
  • heating device DFF combustion devices are also used here, their ⁇ value being here > 1 is set to specifically oxidize the surface of the steel strip S.
  • the steel strip S passes through a likewise shielded from the environment holding zone 4, in which the steel strip S is maintained at the previously achieved, lying in the range of 750 - 950 ° C belt temperature.
  • the atmosphere in the holding zone 4 consists of 1-50% by volume of H 2 in order, in addition to the recrystallization, to reduce the
  • Holding zone atmosphere is kept between -30 ° C and +25 ° C.
  • a cooling zone 5 Connected to the holding zone 4 is a cooling zone 5, in which the steel strip S under the unchanged
  • a proboscis atmosphere is maintained, which consists either of nitrogen or of hydrogen or a mixture of these two gases.
  • the dew point of the trunk atmosphere is kept at -80 ° C to -25 ° C.
  • Atm e composition of the atmosphere in the
  • TP e dew point of the atmosphere in the trunk zone 7 the composition of the respectively used

Landscapes

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

Abstract

L'invention concerne un procédé de revêtement par immersion à chaud d'un produit plat en acier contenant un acier inoxydable à plus de 5% en poids de Cr, par un revêtement de protection métallique anti-corrosion. Conformément à l'invention, le procédé comprend les étapes suivantes : - le produit plat en acier est chauffé, en 1 à 30 s, à une température comprise entre 100 à 600°C, en atmosphère de chauffe exempte d'oxygène, excluant une oxydation de la surface du produit plat en acier; - le chauffage est poursuivi jusqu'à obtention d'une température de maintien de l'ordre de 750 à 950°C, le chauffage étant effectué à un créneau de température de l'ordre de 550 à 800°C, en atmosphère de chauffe inerte ou réductrice, dans ce créneau de température, pendant 1 à 15 s, en atmosphère oxydante de pré-oxydation et, après avoir quitté ce créneau de température, le chauffage reprend en atmosphère inerte ou réductrice, jusqu'à ce que la température de maintien soit atteinte; - le produit plat en acier, ainsi pré-oxydé, est maintenu à la température de maintien, pendant 10 - 120 s, en atmosphère de maintien réductrice; - le produit plat en acier est dirigé, par une zone de museau, dans un bain en fusion, dans lequel le produit plat en acier est revêtu à chaud par le revêtement métallique, ledit produit étant maintenu jusqu'à son entrée dans le bain en fusion, dans la zone du museau, en atmosphère de museau inerte ou réductrice, la température du produit plat en acier s'élevant à 430 - 780°C pendant le passage à travers la zone du museau.
EP11745783.8A 2010-08-31 2011-08-18 Procédé de revêtement par immersion à chaud d'un produit plat en acier Not-in-force EP2611946B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010037254A DE102010037254B4 (de) 2010-08-31 2010-08-31 Verfahren zum Schmelztauchbeschichten eines Stahlflachprodukts
PCT/EP2011/064222 WO2012028465A1 (fr) 2010-08-31 2011-08-18 Procédé de revêtement par immersion à chaud d'un produit plat en acier

Publications (2)

Publication Number Publication Date
EP2611946A1 true EP2611946A1 (fr) 2013-07-10
EP2611946B1 EP2611946B1 (fr) 2018-10-03

Family

ID=44515132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11745783.8A Not-in-force EP2611946B1 (fr) 2010-08-31 2011-08-18 Procédé de revêtement par immersion à chaud d'un produit plat en acier

Country Status (6)

Country Link
US (1) US9279175B2 (fr)
EP (1) EP2611946B1 (fr)
CN (1) CN103080363B (fr)
DE (1) DE102010037254B4 (fr)
ES (1) ES2701756T3 (fr)
WO (1) WO2012028465A1 (fr)

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DE102012101018B3 (de) * 2012-02-08 2013-03-14 Thyssenkrupp Nirosta Gmbh Verfahren zum Schmelztauchbeschichten eines Stahlflachprodukts
EP2687611A1 (fr) * 2012-07-17 2014-01-22 Linde Aktiengesellschaft Procédé et appareil de commande de porosité de surface de matériaux métalliques
DE102013105378B3 (de) * 2013-05-24 2014-08-28 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines durch Schmelztauchbeschichten mit einer metallischen Schutzschicht versehenen Stahlflachprodukts und Durchlaufofen für eine Schmelztauchbeschichtungsanlage
DE102015101312A1 (de) * 2015-01-29 2016-08-04 Thyssenkrupp Steel Europe Ag Verfahren zum Aufbringen eines metallischen Schutzüberzugs auf eine Oberfläche eines Stahlprodukts
WO2017054870A1 (fr) * 2015-09-30 2017-04-06 Thyssenkrupp Steel Europe Ag Produit plat en acier pourvu d'un revêtement de protection recuit après galvanisation et procédé de production de celui-ci
WO2017208671A1 (fr) * 2016-05-30 2017-12-07 Ｊｆｅスチール株式会社 Tôle d'acier inoxydable ferritique
EP3305941B1 (fr) * 2016-10-07 2019-07-03 SEPIES GmbH Procédé de fabrication d'une couche sol-gel adhérente sur une surface métallique
DE102018102624A1 (de) 2018-02-06 2019-08-08 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Stahlbandes mit verbesserter Haftung metallischer Schmelztauchüberzüge
BE1026986B1 (fr) 2019-01-23 2020-08-25 Drever Int S A Procédé et four pour le traitement thermique d’une bande d’acier de haute résistance comprenant une chambre d’homogénéisation en température
DE102019108459B4 (de) 2019-04-01 2021-02-18 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Stahlbandes mit verbesserter Haftung metallischer Schmelztauchüberzüge
DE102019108457B4 (de) 2019-04-01 2021-02-04 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Stahlbandes mit verbesserter Haftung metallischer Schmelztauchüberzüge
US20230082367A1 (en) * 2020-02-21 2023-03-16 Jfe Steel Corporation Method of producing high-strength hot-dip galvanized steel sheet
CN111485188A (zh) * 2020-04-02 2020-08-04 鞍钢股份有限公司 一种采用预氧化技术提升高强钢板表面可镀性的方法
CN112030091A (zh) * 2020-09-11 2020-12-04 霸州市青朗环保科技有限公司 一种在金属制品表面制备复合镀层的方法

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Publication number Publication date
EP2611946B1 (fr) 2018-10-03
ES2701756T3 (es) 2019-02-25
WO2012028465A1 (fr) 2012-03-08
CN103080363B (zh) 2015-11-25
US20140144550A1 (en) 2014-05-29
DE102010037254B4 (de) 2012-05-24
DE102010037254A1 (de) 2012-03-01
CN103080363A (zh) 2013-05-01
US9279175B2 (en) 2016-03-08

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