EP3129525A2 - Procédé d'activation de surfaces métalliques à phosphater, de préférence de tôle d'acier galvanisée - Google Patents

Procédé d'activation de surfaces métalliques à phosphater, de préférence de tôle d'acier galvanisée

Info

Publication number
EP3129525A2
EP3129525A2 EP15741927.6A EP15741927A EP3129525A2 EP 3129525 A2 EP3129525 A2 EP 3129525A2 EP 15741927 A EP15741927 A EP 15741927A EP 3129525 A2 EP3129525 A2 EP 3129525A2
Authority
EP
European Patent Office
Prior art keywords
activation
bath
particles
activating
size distribution
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
EP15741927.6A
Other languages
German (de)
English (en)
Other versions
EP3129525B1 (fr
Inventor
Fabian JUNGE
Gregor Müller
Nicole Weiher
Heinrich Meyring
Frank Panter
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
ThyssenKrupp AG
Original Assignee
ThyssenKrupp Steel Europe AG
ThyssenKrupp 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, ThyssenKrupp AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP3129525A2 publication Critical patent/EP3129525A2/fr
Application granted granted Critical
Publication of EP3129525B1 publication Critical patent/EP3129525B1/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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
    • C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
    • C23C18/1827—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment only one step pretreatment
    • C23C18/1834—Use of organic or inorganic compounds other than metals, e.g. activation, sensitisation with polymers
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/28—Sensitising or activating
    • C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/22—Electroplating: Baths therefor from solutions of zinc
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces

Definitions

  • the invention relates to a method for activating metal surfaces
  • coated steel sheet preferably galvanized sheet steel before a phosphating process, in which the metal surface with a
  • Activating bath is brought into contact, which contains water-dispersed inorganic metal activation particles, preferably based on phosphate and / or titanium.
  • Zinc phosphate coatings are used in the prior art for the surface treatment of galvanized sheet steel in order to improve surface-relevant properties of the galvanized steel sheet. These include in particular the increase in corrosion resistance and the improvement of formability and paint adhesion.
  • non-periodic, recurrent paint adhesion problems on, for example, electrolytically galvanized and phosphated metal strip, in particular steel strip (thin sheet) occurred.
  • the present invention has the object to provide a method with which the problem of poor paint adhesion to metal strip can be significantly reduced or even avoided.
  • This object is achieved in a method of the type mentioned in that at least one additive is supplied to the activation bath, which suppresses or at least slows down an agglomeration of the activation particles.
  • the inventors have studied the mechanisms of activation, nucleation and growth of zinc phosphate crystals on the zinc coating. They have noticed increasing lifetime of the activation bath agglomerates of
  • the additive used to stabilize the activation bath may in particular be one or more of the following substances:
  • Nonionic, anionic, cationic and / or zwitterionic surfactants are nonionic, anionic, cationic and / or zwitterionic surfactants.
  • PEG Polyethylene glycol
  • Salts especially alkali, alkaline earth salts of the fatty acids, e.g. Sodium stearate, but also salts of branched and unbranched, saturated and
  • Carboxylic acids in particular formic acid, acetic acid, citric acid,
  • Tartaric acid ascorbic acid, nitrilotriacetic acid (NTA), iminodisuccinic acid and salts thereof, in particular sodium and potassium salts
  • Poly (oxy-l, 2-ethanediyl) -carboxylic acid esters in particular poly (oxy-l, 2-ethanediyl) -monododecanoic sorbityl esters, polyoxyethylene (20) sorbitan monooleate and other polysorbates
  • Alkylpolyethylenglycolether in particular Isotridecylpolyethylenglycolether
  • Phosphonates such as, for example, 1-hydroxyethane- (1,1-diphosphonic acid), phosphonobutanetricarboxylic acids, aminophosphonates, for example aminotrimethylenephosphonic acid, itriaminpenta (methylenephosphonic acid) and
  • Polycarboxylates in particular polymers and copolymers of acrylic acid, the
  • Alkylphenol ethoxylates in particular nonylphenol ethoxylates
  • Amino acids and in particular polyamino acids and their salts in particular
  • Polyaspartic acid and its salts in particular sodium and potassium salts
  • An advantageous embodiment of the method according to the invention is characterized in that the activation bath of polyethylene glycol (PEG) and / or sodium stearate is added as an additive for suppressing or slowing down an agglomeration of the activation particles.
  • PEG polyethylene glycol
  • / or sodium stearate is added as an additive for suppressing or slowing down an agglomeration of the activation particles.
  • the activation bath is moved continuously or discontinuously by stirring and / or pumping and / or ultrasonic input.
  • the service life of the activation bath can be further extended.
  • the intensity of the bath movement (by stirring and / or pumping over and / or
  • the activation bath is stirred by means of at least one mechanical stirrer.
  • a further preferred embodiment of the method according to the invention is characterized in that the particle size distribution of the activation particles present in the activation bath is determined, and that the activation bath is renewed or taken out of operation as a function of the particle size distribution of the activation particles.
  • Embodiment of the method according to the invention the particle size distribution of the activation particles during operation of the activation bath at regular intervals or continuously by means of dynamic light scattering
  • the particle size distribution of the activation particles can also during operation of the activation bath at regular intervals or continuously means
  • Nanoparticle Tracking Analysis can be determined. These two measuring methods are particularly suitable and reliable for the relevant particle sizes and distribution widths. The measurement can be carried out in each case on separate, limited samples of the activation bath or alternatively also by means of at least one
  • SEM Scanning Electron Microscopy
  • automated substrates such as metallographically polished surfaces, preferably singulated particles, preferably also counted by image-analytical methods and classifiable by geometrical sizes in order to obtain a statistically qualified size distribution are SEM images in topography contrast and / or
  • coated particles or particles which are embedded in radiopaque matrix e.g., polymers
  • particles adhered to supports e.g., ridges of a commercial TEM mesh
  • the activation bath according to a further preferred embodiment is adjusted to have an activation particle concentration in the range of 0.1 g / 1 to 10 g / l, in particular 0.5 g / 1 to 3 g / 1.
  • a cold-rolled and optionally dressed steel strip (steel sheet) is provided as coil 1.
  • the steel strip (steel sheet) 2 is unwound from the coil 1 and welded to the end of the previous strip. Since it is at the following
  • electrolytic surface finishing is a continuous process, the newly entering the electrolytic processing plant belt is first passed into a tape loop storage 3, where it is stored in one or more loops, so that the coating process when welding the
  • the strip surface is usually first mechanically and chemically cleaned.
  • the strip surface is roughened in an acidic stain before the strip 2 is passed through the electrolytic coating cells 4 and galvanized there.
  • the steel strip 2 is immersed in a sulfuric acid zinc electrolyte and switched simultaneously as a cathode.
  • soluble zinc electrodes these are also immersed in the electrolyte solution and connected as an anode.
  • the zinc cations migrate from the anode through the electrolyte to the steel strip surface and are deposited there cathodically.
  • insoluble anodes however, the zinc is already dissolved in the electrolyte, the anodes from corresponding nobler
  • the amount of zinc deposited on the surface of the strip depends Current density and the duration of coating. In order to achieve a zinc layer thickness of a few micrometers at a belt speed of, for example, 100 m / min
  • the electrolytically galvanized steel strip 2 ' is passed through a multi-stage flushing device 5.
  • the pretreatment step for the phosphation is followed by a generally slightly alkaline activation bath 6.
  • activation baths serve to increase the number of nucleation sites and thus the phosphate crystals per unit area and thus to increase the crystallization rate
  • the activation bath 6 contains water-dispersed activation particles, generally based on phosphate and / or titanium or metal oxides.
  • the available for example in powder form activation particles are dispersed in water and form with this a colloidal solution.
  • the activation bath 6 is adjusted to have an activation particle concentration in the range of 0.1 g / 1 to 10 g / l, in particular 5 g / 1 to 3 g / l, preferably 0.7 g / 1 to 1.5 g / 1.
  • Fixodine®X Fixodine®50, Fixodine®50CF (now Bonderite® M-AC 50CF),
  • Fixodine®950 (now Bonderite® M-AC 950), Fixodine® G 3039, Fixodine® C 5020 A, Fixodine® G 5020 B, Fixodine® C 9114, Fixodine® 9112, Gardolene® Z26, Gardolene® V 6599, Gardolene® V 6560 A, Gardolene® V 6559, Gardolene® V 6526, Gardolene®
  • Activation particles are usually so-called Jernstedt salts or titanyl phosphates.
  • the activation bath 6 is stirred continuously and discontinuously and / or circulated and / or ultrasonicated. For example, that will
  • Activating bath 6 is stirred by means of at least one mechanical stirrer 7.
  • the liquid film is squeezed or stripped off the steel strip 2 'in order to avoid carryover of the possibly alkaline medium (liquid film) into the acid phosphating solution. Drying of the steel strip surface may also be expedient at this point.
  • a hot air blower 8 is outlined.
  • the phosphating solution is sprayed onto the activated strip surface. On the one hand, this leads to heating of the zinc surface and, on the other hand, to growth of the zinc phosphate crystals on the activated regions. The remaining supernatant phosphating solution is then squeezed off the belt and the
  • the phosphated steel strip 2 is then dried by means of a belt drier 10.
  • the phosphated steel strip 2 is optionally oiled and reeled into a coil 11 so that it can be transported to the customer in a manageable form.
  • the customer for example, an automobile manufacturer, are from the
  • the forming step is usually followed by a degreasing step in a slightly alkaline solution and the rinsing of the cleaner in a multi-stage solution ; at.
  • the rinse is followed by the re-activation step and the post-phosphation.
  • the phosphating solution is removed by another multi-stage flushing device before the component is painted.
  • a base coat is applied to the phosphated by cathodic dip painting
  • the components are run with the still wet basecoat surface into an oven, typically a continuous oven, where the paint is cured at relatively high temperatures (e.g., about 180 ° C). Subsequently, if necessary, a filling and finally a topcoat is applied.
  • at least one additive A is added to the activation bath 6 preceding the phosphating, which suppresses or at least slows down agglomeration of the activation particles.
  • the additive forms a shell around the activation particles, whereby agglomeration of the activation particles can be suppressed at least for a certain time compared to conventional activation baths.
  • the activation bath 6 is for this purpose, for example, polyethylene glycol (PEG),
  • sodium stearate as additive A is added to the activating bath 6 preceding the phosphating according to a further embodiment of the process according to the invention.
  • Sodium stearate is the sodium salt of stearic acid and a basic ingredient of many soaps.
  • Sodium stearate is a water-soluble solid.
  • the activating bath 6 has an activating particle concentration in the range of 0.5 g / l to 3 g / l, preferably 0.7 g / l to 1.5 g / 1.
  • poly (oxy-1,2-ethanediyl) -carboxylic acid ester in particular poly (oxy-1,2-ethanediyl) -monododecanoic sorbityl ester, is added as additive A to the activating bath preceding the phosphating.
  • This additive which is also commonly referred to as polysorbate 20 (trade name “Tween® 20"), is a nonionic surfactant which acts as a wetting agent, for example, for 1 l activating bath having an activation particle concentration in the range of 0 , 1 g / 1 to 10 g / l,
  • polysorbate 40 in particular from 0.5 g / 1 to 3.0 g / l, preferably from 0.7 g / 1 to 1.5 g / l, between 0.01 g / 1 to 100 g / l polysorbate 20 ("Tween® instead of this additive, it is also possible to add to the activating bath 6 polysorbate 40, polysorbate 60, polysorbate 65 or polysorbate 80 (trade name "Tween® 80”) as additive A.
  • alkylpolyethylene glycol ether in particular isotridecylpolyethylene glycol ether, is added to the activating bath 6.
  • This additive is a nonionic surfactant whose physical state is liquid. It acts in particular as a wetting agent and is available in various variants under the tradename MARLIPAL®013, the different variants differing in the number of ethylene oxide moles included. For example, on 1 1 activation bath 6, the one
  • Alkylpolyethylenglycolether added as additive A.
  • Activating 6 to determine existing particle size distribution of the activation particles and renew the activation bath 6 depending on the determined particle size distribution or decommissioning takes place by means of dynamic light scattering. Alternatively or additionally, the measurement of the particle size distribution can also be carried out by means of nanoparticle tracking be carried out.
  • the measurement of the particle size distribution of the activation particles of the activation bath 6 is preferably carried out on the basis of separate samples (partial volumes) of the activation bath 6 or by means of at least one flow measuring cell (not shown), wherein the sampling and the measurement preferably during the operation of the activation bath in regular
  • the renewal or decommissioning of the activation bath 6 as a function of the determined particle size distribution of the activation particles of the activation bath 6 then preferably also takes place automatically.
  • the phosphating process can thus be conducted more safely.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Medicinal Preparation (AREA)

Abstract

L'invention concerne un procédé d'activation de surfaces métalliques, en particulier d'une tôle d'acier pourvue d'un revêtement, de préférence d'une tôle d'acier galvanisée, avant un processus de phosphatation, dans lequel la tôle métallique (2'), en particulier pourvue d'un revêtement, de préférence galvanisée par électrolyse, est mise en contact avec un bain d'activation (6) qui contient des particules d'activation, de préférence à base de phosphate et/ou de titane, qui sont dispersées dans l'eau. Selon l'invention, pour réduire voire éliminer le problème de mauvaise adhérence de la peinture à une bande métallique phosphatée, de préférence galvanisée par électrolyse, le bain d'activation (6) est additionné d'au moins un additif (A) qui supprime ou du moins ralentit l'agglomération des particules d'activation. L'additif (A) ajouté est de préférence du polyéthylène glycol (PEG) et/ou du stéarate de sodium. Un mode de réalisation particulièrement préféré du procédé de l'invention réside dans le fait que l'on détermine la distribution granulométrique des particules d'activation dans le bain d'activation (6), et en ce que l'on désactive ou active à nouveau le bain d'activation (6) en fonction de la distribution granulométrique des particules d'activation.
EP15741927.6A 2014-04-11 2015-04-07 Procédé d'activation de surfaces métalliques à phosphater, de préférence de tôle d'acier galvanisée Not-in-force EP3129525B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014105226.9A DE102014105226A1 (de) 2014-04-11 2014-04-11 Verfahren zur Aktivierung von zu phosphatierenden Metalloberflächen, vorzugsweise verzinktem Stahlblech
PCT/EP2015/057464 WO2015155163A2 (fr) 2014-04-11 2015-04-07 Procédé d'activation de surfaces métalliques à phosphater, de préférence de tôle d'acier galvanisée

Publications (2)

Publication Number Publication Date
EP3129525A2 true EP3129525A2 (fr) 2017-02-15
EP3129525B1 EP3129525B1 (fr) 2019-02-20

Family

ID=53724301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15741927.6A Not-in-force EP3129525B1 (fr) 2014-04-11 2015-04-07 Procédé d'activation de surfaces métalliques à phosphater, de préférence de tôle d'acier galvanisée

Country Status (7)

Country Link
US (1) US10480080B2 (fr)
EP (1) EP3129525B1 (fr)
JP (1) JP6626000B2 (fr)
KR (1) KR20160145080A (fr)
CN (1) CN106471157B (fr)
DE (1) DE102014105226A1 (fr)
WO (1) WO2015155163A2 (fr)

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DE102018216216A1 (de) * 2018-09-24 2020-03-26 Thyssenkrupp Ag Verfahren zur Verbesserung der Phosphatierbarkeit von metallischen Oberflächen, welche mit einer temporären Vor- bzw. Nachbehandlung versehen werden
CN114174559A (zh) * 2019-08-05 2022-03-11 Sms集团有限公司 使用脉冲技术对导电带材和/或织物进行电解涂层的方法和设备
DE102019134298A1 (de) * 2019-12-13 2021-06-17 Thyssenkrupp Steel Europe Ag Verfahren zum Herstellen eines Stahlflachprodukts mit einer metallischen Schutzschicht auf Basis von Zink und einer auf einer Oberfläche der metallischen Schutzschicht erzeugten Phosphatierschicht und derartiges Stahlflachprodukt
CN115125528B (zh) * 2022-07-22 2023-11-28 长江润发(江苏)薄板镀层有限公司 一种耐指纹板的磷化装置及磷化方法
EP4339324A1 (fr) * 2022-09-19 2024-03-20 ThyssenKrupp Steel Europe AG Produit plat en acier doté d'une couche d'activation pour le formage à chaud

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DE102008054407B4 (de) 2008-12-09 2018-03-29 Chemetall Gmbh Verfahren zur Beschichtung von metallischen Oberflächen mit einem Aktivierungsmittel vor dem Phosphatieren, entsprechende Aktivierungsmittel sowie Verwendung der mit dem Verfahren beschichteten Substrate
CN201670879U (zh) 2010-03-16 2010-12-15 马占元 拉丝用无酸洗磷化设备
WO2012086494A1 (fr) 2010-12-22 2012-06-28 関西ペイント株式会社 Composition de revêtement présentant une excellente résistance à la corrosion

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US20170029954A1 (en) 2017-02-02
KR20160145080A (ko) 2016-12-19
CN106471157B (zh) 2019-08-30
WO2015155163A3 (fr) 2015-12-17
CN106471157A (zh) 2017-03-01
US10480080B2 (en) 2019-11-19
EP3129525B1 (fr) 2019-02-20
JP2017510709A (ja) 2017-04-13
WO2015155163A2 (fr) 2015-10-15
DE102014105226A1 (de) 2015-10-15
JP6626000B2 (ja) 2019-12-25

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