EP2841614A1 - PROCÉDÉ DE RÉALISATION D'UNE TÔLE À REVÊTEMENTS ZnAlMg COMPRENANT L'APPLICATION D'EFFORTS MÉCANIQUES SUR LES REVÊTEMENTS ET D'UN ADHÉSIF, TÔLE ET ASSEMBLAGE CORRESPONDANTS - Google Patents
PROCÉDÉ DE RÉALISATION D'UNE TÔLE À REVÊTEMENTS ZnAlMg COMPRENANT L'APPLICATION D'EFFORTS MÉCANIQUES SUR LES REVÊTEMENTS ET D'UN ADHÉSIF, TÔLE ET ASSEMBLAGE CORRESPONDANTSInfo
- Publication number
- EP2841614A1 EP2841614A1 EP13727381.9A EP13727381A EP2841614A1 EP 2841614 A1 EP2841614 A1 EP 2841614A1 EP 13727381 A EP13727381 A EP 13727381A EP 2841614 A1 EP2841614 A1 EP 2841614A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coatings
- outer surfaces
- magnesium
- sheet
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- C23C2/06—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
- C23C2/26—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
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/29—Cooling or quenching
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
Definitions
- the present invention relates to a sheet comprising a steel substrate having two faces, each coated with a coating, and a sheet of metal having two faces each coated with a coating.
- a metal coating comprising zinc, magnesium and aluminum.
- Such sheets are more particularly intended for the manufacture of parts for the automotive industry, without being limited thereto.
- Metal coatings essentially comprising zinc and aluminum in a small proportion are traditionally used for their good protection against corrosion. These metal coatings are now in competition with coatings including zinc, magnesium and aluminum.
- Such metal coatings will generally be referred to herein as zinc-aluminum-magnesium or ZnAIMg coatings.
- magnesium significantly increases the corrosion resistance of these coatings, which can reduce their thickness or increase the guarantee of protection against corrosion over time.
- the sheets are frequently assembled by means of adhesives for the production of certain parts of the vehicles, such as, for example, door sills.
- adhesives may be structural, structural (for example "crash” type) or semi-structural adhesives, sealing mastics or setting mastics that are of various chemical natures, such as epoxy, polyurethane or rubber.
- the adhesion of the adhesive to the sheet is evaluated on the one hand by measuring the tensile stress at break and on the other hand the compatibility of the adhesive and the sheet by visual determination of the nature of the break.
- An object of the invention is therefore to provide a method of producing a ZnAIMg coated sheet which has a better compatibility with adhesives and therefore limits the risk of adhesive failure.
- the invention firstly relates to a method according to claim 1.
- the method may also include the features of claims 2 to 22, taken alone or in combination.
- the invention also relates to a sheet according to claim 23 and to an assembly according to claim 24.
- FIG. 1 is a diagrammatic sectional view illustrating the structure of a sheet obtained by a method according to the invention.
- FIGS. 2 and 3 show XPS spectroscopic analysis results of the outer surfaces of the metal coatings
- FIG. 4 is a schematic view illustrating a specimen used for a tensile test
- FIG. 5 and 6 are views respectively showing a superficial cohesive failure and adhesive failure.
- Sheet 1 of FIG. 1 comprises a substrate 3 made of steel coated on each of its two faces 5 by a metal coating 7.
- the coating 7 generally has a thickness less than or equal to 25 ⁇ and conventionally aims to protect the substrate 3 against corrosion.
- the coating 7 comprises zinc, aluminum and magnesium. It is particularly preferred that the coating 7 comprises between 0.1 and 10% by weight of magnesium and between 0.1 and 20% by weight of aluminum.
- the coating 7 comprises more than 0.3% by weight of magnesium or between 0.3% and 4% by weight of magnesium and / or between 0.5 and 11% or even between 0.7 and 6% in weight of aluminum, or even between 1 and 6% by weight of aluminum.
- the mass ratio Mg / Al between the magnesium and the aluminum in the coating 7 is less than or equal to 1, or strictly less than 1, or even strictly less than 0.9.
- the substrate 3 obtained for example by hot rolling and cold.
- the substrate 3 is in the form of a strip which is passed through a bath to deposit the coatings 7 by hot dipping.
- the bath is a molten zinc bath containing magnesium and aluminum.
- the bath may also contain up to 0.3% by weight of each of the optional addition elements such as Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni, Zr or Bi.
- the bath may finally contain residual elements coming from the ingots or resulting from the passage of the substrate 3 in the bath, such as iron at a content of up to 5% by weight and generally between 2 and 4% by weight. .
- the substrate 3 is for example spun by means of nozzles throwing a gas on either side of the substrate 3.
- the coatings 7 are then allowed to cool in a controlled manner.
- the strip thus treated can then be subjected to a so-called skin-pass step which allows it to be hardened so as to erase the elastic bearing, to fix the mechanical characteristics and to give it a roughness adapted to the subsequent operations that the sheet metal must undergo.
- the means of adjusting the skin-pass operation is the rate of elongation which must be sufficient to achieve the objectives and minimum to maintain the ability to subsequent deformation.
- the elongation rate is usually between 0.3 to 3%, and preferably between 0.3 and 2.2%.
- the sheet 1 thus obtained can be wound before being cut, possibly shaped and assembled with other sheets 1 or other elements by users.
- an adhesive 13 may be applied locally to an outer surface 15 of a coating 7 to allow for example to assemble the sheet 1 to another sheet and thus constitute a motor vehicle part.
- the adhesive 13 may be any type of glue or putty conventionally used in the automotive industry.
- XPS X ray Photoemission Spectroscopy
- XPS spectroscopy has also been used to measure the thickness of the magnesium oxide or magnesium hydroxide layers present on the outer surfaces 15. It appears that these layers have a thickness of a few nm.
- FIGS. 2 and 3 respectively show the spectra of the elements for the energy levels C1 s (curve 17), 01 s (curve 19), Mg1 s (curve 21), Al2p (curve 23) and Zn2p3 (curve 25) during of an XPS spectroscopy analysis.
- the corresponding atomic percentages are plotted on the ordinate and the analysis depth on the abscissa.
- the sample analyzed in FIG. 2 corresponds to coatings 7 comprising 3.7% by weight of aluminum and 3% by weight of magnesium and subjected to a stage conventional skin-pass with an elongation rate of 0.5% while the sample of Figure 3 was not subjected to such a step.
- the thickness of the magnesium oxide or magnesium hydroxide layers is about 5 nm.
- the method of producing sheet metal 1 comprises at least one step of alteration, by application of mechanical forces, of magnesium oxide or magnesium hydroxide layers present on the outer surfaces of the coatings. 7, before possible subsequent application of an adhesive 13.
- Such mechanical forces can be applied by a planer, brushing devices, shot blasting ...
- a planer which is characterized by the application of a plastic deformation by bending between rollers, can be adjusted to deform the sheet that passes through it sufficiently to create cracks in the oxide layers of magnesium or hydroxide magnesium.
- the application of mechanical forces on the outer surfaces 15 of the metal coatings 7 can be combined with the application of an acid solution or the application of a degreasing, for example based on an alkaline solution, on the surfaces outside 15.
- the acid solution has for example a pH of between 1 and 4, preferably between 1 and 3.5, preferably between 1 and 3, and more preferably between 1 and 2.
- This solution may comprise, for example, hydrochloric acid. , sulfuric acid or phosphoric acid.
- the duration of application of the acid solution can be between 0.2 s and 15 s, preferably between 0.2 s and 15 s, and more preferably between 0.5 s and 15 s, depending on the pH of the solution, when and how it is applied.
- This solution can be applied by immersion, sprinkling or any other system.
- the temperature of the solution may for example be room temperature or any other temperature and subsequent rinsing and drying steps may be used. More generally, it is possible to alter the magnesium oxide or magnesium hydroxide layers by applying an acidic solution and without applying mechanical stresses.
- the purpose of the degreasing step is to clean the outer surfaces and thus to remove traces of organic dirt, metal particles and dust.
- this step does not alter the chemical nature of the outer surfaces with the exception of the weathering of any surface aluminum oxide / hydroxide layer.
- the solution used for this degreasing step is non-oxidizing. Therefore, magnesium oxide or magnesium hydroxide are not formed on the outer surfaces during the degreasing step and more generally before the step of applying the adhesive 13.
- a degreasing step it intervenes before or after the step of applying the acid solution.
- the optional degreasing step and the step of applying the acid solution take place before a possible surface treatment step, that is to say a step for forming on the outer surfaces 15 layers (not shown). ) improving the corrosion resistance and / or adhesion of further layers subsequently deposited on the outer surfaces 15.
- Such a surface treatment step comprises applying to the outer surfaces a surface treatment solution which reacts with the outer surfaces to form said layers.
- the surface treatment solution is a conversion solution and the formed layers are conversion layers.
- the conversion solution does not contain chromium. It can thus be a solution based on hexafluorotitanic acid or hexafluorozirconic acid.
- the mechanical forces will preferably be applied before the acidic solution or while it is present on the outer surfaces to favor the action of the acid solution.
- the mechanical forces may be less intense.
- the acid solution application step and the surface treatment step are combined.
- the surface treatment solution employed that is acidic.
- the pH may be strictly greater than 3, especially if the surface treatment solution is applied at a temperature greater than 30 ' ⁇ .
- each specimen 17 is prepared in the following manner.
- Tabs 29 are cut into sheet 1 to be evaluated. These tongues 29 have dimensions of 25 mm per 100 mm.
- the tabs 29 are glued by a seal 31 of the BM1496V adhesive, which is an epoxy-based "crash" adhesive marketed by Dow Automotive.
- This adhesive has been selected because it is one of the adhesives leading most to adhesive breaks.
- test piece 27 thus formed is then brought to the end and held there for 30 minutes.
- the tensile test is then performed at an ambient temperature of 23 ° C by imposing a tensile speed of 10mm / min at one tab 29, parallel thereto, while the other tab 29 is attached. The test is continued until the test piece 27 is broken.
- Sheet 1 whose substrate 3 is a 0.8 mm thick IFHR 340 steel covered with coatings 7 comprising 3.7% aluminum and 3% magnesium, the remainder being zinc and impurities inherent in the process. These coatings have thicknesses of approximately 10 ⁇ . Sheet 1 was also pre-oiled with Quaker 6130 oil and a basis weight of 2.5g / m 2 .
- the sheets 1 which have undergone a mechanical treatment of alteration of magnesium oxide or magnesium hydroxide layers promote the appearance of superficial cohesive fractures, unlike the reference sheets for which only adhesive breaks are noted.
- the reference sheet 1 had not undergone any mechanical treatment of alteration of magnesium oxide or magnesium hydroxide layers.
- the sheet 1 referenced test had been subjected to a plane deformation by traction of 10%.
- Reference Test 1
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL13727381.9T PL2841614T5 (pl) | 2012-04-25 | 2013-04-25 | Sposób wytwarzania blachy z powłokami ZnAlMg obejmujący przykładanie sił mechanicznych do powłok i spoiwa, odpowiednia blacha oraz układ |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2012/050914 WO2013160569A1 (fr) | 2012-04-25 | 2012-04-25 | Procédé de réalisation d'une tôle à revêtements ZnAlMg comprenant l'application d'efforts mécaniques sur les revêtements et tôle correspondante. |
| PCT/IB2013/053283 WO2013160868A1 (fr) | 2012-04-25 | 2013-04-25 | PROCÉDÉ DE RÉALISATION D'UNE TÔLE À REVÊTEMENTS ZnAlMg COMPRENANT L'APPLICATION D'EFFORTS MÉCANIQUES SUR LES REVÊTEMENTS ET D'UN ADHÉSIF, TÔLE ET ASSEMBLAGE CORRESPONDANTS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2841614A1 true EP2841614A1 (fr) | 2015-03-04 |
| EP2841614B1 EP2841614B1 (fr) | 2019-02-06 |
| EP2841614B2 EP2841614B2 (fr) | 2025-02-26 |
Family
ID=48577186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13727381.9A Active EP2841614B2 (fr) | 2012-04-25 | 2013-04-25 | Procédé de réalisation d'une tôle à revêtements znalmg comprenant l'application d'efforts mécaniques sur les revêtements et d'un adhésif, tôle et assemblage correspondants |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2841614B2 (fr) |
| ES (1) | ES2724539T5 (fr) |
| FI (1) | FI2841614T4 (fr) |
| HU (1) | HUE044446T2 (fr) |
| PL (1) | PL2841614T5 (fr) |
| TR (1) | TR201906423T4 (fr) |
| WO (2) | WO2013160569A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022122775A1 (de) | 2022-09-08 | 2024-03-14 | Thyssenkrupp Steel Europe Ag | Stahlblech für fleckenfreie Phosphatierung |
| DE102022122771A1 (de) | 2022-09-08 | 2024-03-14 | Thyssenkrupp Steel Europe Ag | Stahlblech für fleckenfreie Phosphatierung |
| DE102022122773A1 (de) | 2022-09-08 | 2024-03-14 | Thyssenkrupp Steel Europe Ag | Stahlblech für fleckenfreie Phosphatierung |
| DE102022122772A1 (de) | 2022-09-08 | 2024-03-14 | Thyssenkrupp Steel Europe Ag | Stahlblech für fleckenfreie Phosphatierung |
| DE102022127491A1 (de) | 2022-10-19 | 2024-04-25 | Thyssenkrupp Steel Europe Ag | Dressiertes Stahlblech mit intakter Oxidschicht auf einem metallischen Überzug |
| DE102023106688A1 (de) | 2023-03-17 | 2024-09-19 | Thyssenkrupp Steel Europe Ag | Geklebte Bauteilgruppe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610156A (ja) † | 1992-06-25 | 1994-01-18 | Sumitomo Metal Ind Ltd | 接着接合性に優れた溶融亜鉛系めっき鋼板 |
| DE4317217A1 (de) † | 1993-05-24 | 1994-12-01 | Henkel Kgaa | Chromfreie Konversionsbehandlung von Aluminium |
| JP2002004017A (ja) * | 2000-06-15 | 2002-01-09 | Nippon Steel Corp | 表面性状に優れた溶融Zn−Al−Mg−Siめっき鋼材とその製造方法 |
| JP2005206870A (ja) * | 2004-01-22 | 2005-08-04 | Nisshin Steel Co Ltd | 研磨目模様を付けた溶融めっき鋼板 |
| DE102005005858A1 (de) † | 2005-02-08 | 2006-08-17 | Henkel Kgaa | Verfahren zur Beschichtung von Metallblech, insbesondere Zinkblech |
| JP4757608B2 (ja) * | 2005-11-09 | 2011-08-24 | 新日本製鐵株式会社 | Zn系合金めっき鋼材 |
| DE102007048504B4 (de) † | 2007-10-10 | 2013-11-07 | Voestalpine Stahl Gmbh | Korrosionsschutzbeschichtung für Stahlbleche und Verfahren zum Konditionieren einer Korrosionsschutzbeschichtung |
| US20110008644A1 (en) * | 2008-03-17 | 2011-01-13 | Taisei Plas Co., Ltd. | Bonded body of galvanized steel sheet and adherend, and manufacturing method thereof |
| WO2016156896A1 (fr) | 2015-03-31 | 2016-10-06 | Arcelormittal | Panneau pour véhicule comprenant une tôle d'acier revêtue localement renforcée |
-
2012
- 2012-04-25 WO PCT/FR2012/050914 patent/WO2013160569A1/fr not_active Ceased
-
2013
- 2013-04-25 WO PCT/IB2013/053283 patent/WO2013160868A1/fr not_active Ceased
- 2013-04-25 PL PL13727381.9T patent/PL2841614T5/pl unknown
- 2013-04-25 ES ES13727381T patent/ES2724539T5/es active Active
- 2013-04-25 TR TR2019/06423T patent/TR201906423T4/tr unknown
- 2013-04-25 HU HUE13727381 patent/HUE044446T2/hu unknown
- 2013-04-25 EP EP13727381.9A patent/EP2841614B2/fr active Active
- 2013-04-25 FI FIEP13727381.9T patent/FI2841614T4/fi active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013160868A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| TR201906423T4 (tr) | 2019-05-21 |
| PL2841614T5 (pl) | 2025-05-05 |
| WO2013160868A1 (fr) | 2013-10-31 |
| EP2841614B1 (fr) | 2019-02-06 |
| WO2013160569A1 (fr) | 2013-10-31 |
| ES2724539T3 (es) | 2019-09-11 |
| EP2841614B2 (fr) | 2025-02-26 |
| ES2724539T5 (en) | 2025-05-14 |
| FI2841614T4 (fi) | 2025-04-09 |
| PL2841614T3 (pl) | 2019-07-31 |
| HUE044446T2 (hu) | 2019-10-28 |
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