EP1767665A2 - Méthode de passivation de bandes métalliques revêtus et l'appareil utilisé par cette méthode - Google Patents

Méthode de passivation de bandes métalliques revêtus et l'appareil utilisé par cette méthode Download PDF

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Publication number
EP1767665A2
EP1767665A2 EP06016796A EP06016796A EP1767665A2 EP 1767665 A2 EP1767665 A2 EP 1767665A2 EP 06016796 A EP06016796 A EP 06016796A EP 06016796 A EP06016796 A EP 06016796A EP 1767665 A2 EP1767665 A2 EP 1767665A2
Authority
EP
European Patent Office
Prior art keywords
strip
metal strip
aqueous solution
coated
tube
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.)
Withdrawn
Application number
EP06016796A
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German (de)
English (en)
Other versions
EP1767665A3 (fr
Inventor
Theodor Dr. Florian
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 Rasselstein GmbH
Original Assignee
Rasselstein GmbH
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 Rasselstein GmbH filed Critical Rasselstein GmbH
Publication of EP1767665A2 publication Critical patent/EP1767665A2/fr
Publication of EP1767665A3 publication Critical patent/EP1767665A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • 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
    • 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
    • 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
    • C23C22/73—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 characterised by the process
    • C23C22/76—Applying the liquid by spraying

Definitions

  • the invention relates to a method for passivating the surface of metal strips coated with a coating, in particular tinned steel strips, which are moved through a coating system at a belt speed, and to a device for applying the passive layer to a metal-coated steel strip, in particular in a strip-tinning plant
  • the invention further relates to the use of a substance as a greasing and / or passivating agent in the production of tinned steel strips.
  • the coated steel plate (tinplate with tin metal and chromium metal + chromium III hydroxide) is passivated chemically or electrochemically and then greased to make the coated steel sheet resistant to oxidation and to the coefficient of friction to make the coated steel sheet more processable during subsequent processing.
  • the passivation is usually carried out using Cr 6+ -containing solutions.
  • the passivation here must prevent excessive growth of the tin oxide layer during storage of the food container until painting or until consumption of the preserve.
  • the coated metal surface by matt Discoloration or gold coloration are discolored ugly, which may give the consumer the impression that the contents are spoiled.
  • the passivation must also ensure the resistance of the painted metal container after filling with food against acids contained in the foods, such as.
  • acids contained in the foods such as.
  • mercapto-amino-carboxylic acid anions such as cysteine and methionine.
  • Such acid anions in the product can cause delamination of the inner coating of the container in case of insufficient passivation.
  • the object of the invention is to provide a method and a device for passivating the surface of metal strips coated with a coating, in particular tinned steel strips, which are moved at a belt speed through a coating system, with which an efficient passivation of the Metal belt surface is made possible even at high belt speeds.
  • a lubrication should take place simultaneously with the passivation of the metal strip surface, so that an additional post-treatment step to reduce the coefficient of friction of the coated metal strip surface is superfluous.
  • the object of the invention is also to provide products for passivation and / or for lubricating the surface of coated metal strips, which can be used in the inventive method.
  • an aqueous solution of a surface-active substance is sprayed onto the metal strip moved through the coating system.
  • the aqueous solution of the surface-active substance is then squeezed off by means of squeezing rollers and dried. After squeezing and drying, only a thin film of the surface-active substance remains on the surface of the coated metal strip, the support of this thin film generally being between 2 and 15 mg / m 2 .
  • the surface-active substances may be a siloxane, in particular a polymethylsiloxane or a polyethylene oxide-containing siloxane.
  • the surface-active substance is preferably sprayed on pipes which are arranged at a distance from the coated metal strip surface and have bores through which the aqueous solution reaches the coated metal strip surface.
  • at least one tube with such bores is arranged on each side of the metal strip in order to spray both sides of the metal strip with the surface-active substance.
  • the substances specified in claim 23 have proven to be particularly suitable. With these substances, the growth of tin oxide on the coated metal strip surface can be greatly reduced. At the same time, in the case of the treatment according to the invention of the metal strip surface with these substances, a lowering of the coefficient of friction of the metal strip surface treated in this way takes place to such low values that subsequent greasing with DOS can be dispensed with.
  • the metal strip surfaces treated according to the invention have proven to be very easy to paint.
  • the substances mentioned in claim 23 are particularly suitable for use in the method according to the invention, because they have sufficient solubility in water without the addition of an organic solubilizer and therefore can be sprayed as an aqueous solution on the metal strip surface. Furthermore, due to their surface-active properties, these substances can also be used at very high belt speeds of more than 500 m / min as a uniformly thin film deposited on the metal strip surface.
  • the section of a strip-tinning plant which is shown schematically in FIG. 1, for the production of tinplate comprises an applicator (not illustrated here).
  • the steel strip S is moved through a tinning bath while electrolytically provided with a tin pad.
  • the steel strip S is electrolytically degreased before the tinning process, rinsed with demineralized water and then subjected to a pickling and rinsing with demineralized water.
  • the thus cleaned steel strip S then passes as a cathode connected in a tinning bath containing the electrolyte and the tin anodes.
  • tin surface is flooded after a rinsing process, d. H. in a 20 - 70 ° C warm solution of 1 g / l HCL or 3 g / l zinc chloride / ammonium chloride solution wetted, then squeezed, dried and finally inductively or by resistance heating in a melting tower briefly melted around a visually shiny surface of the tinplate to reach.
  • the tin-plated steel strip S is passed over a deflection roller U through a quench tank 1.
  • demineralized water deionized water
  • the coated steel strip S at a belt speed v which is typically between 200 and 600 m / min over Deflection rollers U passed through a passivation device 2.
  • the passivation device 2 is shown in detail in FIG. 2 in a perspective view.
  • the Passiviticians worn 2 comprises a vertical tank 5 with a drain 6. In the vicinity of the bottom, a guide roller U is disposed within the vertical tank 5, via which the coated steel strip S is deflected. In the upper region or above the vertical tank 5 are on both sides of the continuous steel strip S tubes 11 are arranged. The tubes 11 run parallel to one another and are perpendicular or at least approximately perpendicular to the strip running direction v (which is directed from the bottom to the top in FIG. 2). In the tubes 11 a plurality of, in the longitudinal direction of the tube spaced holes 13 are provided. These holes 13 are the continuous steel strip S opposite. The tubes 11 are acted upon by a pump 14 with an aqueous solution of a surface-active substance. Between the pump 14 and the tube inlet a flow meter 15 is arranged at each tube 11.
  • each tube 11 has at least one bore or opening, but are preferably - as shown in Figure 2 - provided a plurality of spaced apart in the tube longitudinal direction holes in the pipe jacket.
  • each tube 2 to 5 holes with a diameter of 1 to 4 mm, preferably between 2 and 3 mm, on.
  • the tubes 11 are charged with an aqueous solution of a surfactant.
  • the aqueous solution exits through the bores 13 in the tubes 11 and impinges on the coated and moving steel strip S in the form of liquid jets.
  • the liquid jets hit either perpendicular to the steel strip surface or at a decreasing or increasing angle to the strip surface.
  • the distance of the tubes 11 to the steel strip S is set and the location of the bores with respect to the direction of movement of the steel strip is such that the liquid jets impinge perpendicular to the steel strip surface or at least within an angular range of ⁇ 45 °, preferably within an angular range of ⁇ 15 ° about the normal (vertical) to the strip surface.
  • the pinch roller pairs 12a, 12b arranged in the direction of strip travel about 20 to 100 cm behind the tubes 11 are squeezed off the solution sprayed onto the steel strip surface so that only a layer of the aqueous solution having a few molecular layers, possibly only a single-molecule solution layer, is left the coated steel strip surface remains.
  • the excess, and in particular squeezed from the coated steel strip S by the pinch rollers 12 solution collects in the vertical tank 5 and flows through the drain 6 in a arranged under the vertical tank 5 storage tank 4, from where the aqueous solution fed via a pump 8 for reuse in which the solution collected in the storage tank 4 is transferred to the tank 9, where the surfactant concentration can be raised to the desired value and finally pumped back into the tubes 11.
  • the coated steel strip S After passing through the passivation device 2, the coated steel strip S finally passes over a deflection roller U into a drying device 10, which is formed, for example, by a hot-air dryer.
  • tinned steel strips were treated with various surface-active substances in different concentrations and compositions and investigated with regard to their oxidation resistance and sliding friction values.
  • the substances suitable for use in the method according to the invention for passivating the surface of tinplate must have surface-active properties so that they can adhere to the tin surface with the hydrophobic group and at the same time improve the wetting of the lacquer layer to be applied during the subsequent coating of the tin surface with its hydrophilic group.
  • the paint surface with its adhesion promoter molecules must be so strong after drying the paint film that they are in the cysteine test (sterilization of the painted tinplate 90 minutes at 121 ° C in a solution of 3.65 g / l KH 2 PO 4 with 7.22 g / l Na 2 HPO 4 * 2H 2 O and 1 g / l cysteine) are not destroyed.
  • the substances used should be soluble in distilled water up to a concentration of 2 g / l without the addition of organic solvents, since the use of solubilizers cause too high concentrations of the solvents in the exhaust air and thus make costly cleaning systems for the removal of solvents necessary would.
  • Particularly suitable substances have proven to be those substances which are preferably used in practice as additives for the better dispersion of pigments in paints or for improving the wetting and / or the adhesion of paints to metal surfaces.
  • These substances are sprayed according to the method of the invention as an aqueous solution on the tinned steel strip and optionally then squeezed off and dried.
  • the sliding friction values of the tinplate samples treated according to the invention with the substances indicated in Table 1 are given in Table 1 and are between 0.17 and 0.46.
  • tinplate samples treated according to the invention in some cases have a substantially reduced sliding friction compared with untreated tinplate, and even lower sliding friction values could be determined for individual substances than with conventional treatment of the tinplate with DOS.
  • Table 1 Chromium-free aftertreatment products for tinplate surfaces, tested in the laboratory trial Sliding friction, product overlay and tin oxide growth on the treated tinplate surfaces Seq.no. manufacturing company product Active ingredient according to manufacturer's instructions Active substance content (%) sliding friction CV 400 ° C value *** (mg / m 2 C) Sn oxide C / m 2 Org. 6 weeks. 1 EFKA EFKA 7310 organ. mod.Siloxan > 95 0.17 2.9 34 88 2 EFKA EFKA 7315 organ.
  • Paint adhesion during sterilization test (cross-cut test) Paint A (PPG 3907-301 / A) Lacquer B (competitor product) 3% vinegar. 1% milk. + 2% NaCl cysteine 3% vinegar. 1% milk.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
EP06016796A 2005-09-21 2006-08-11 Méthode de passivation de bandes métalliques revêtus et l'appareil utilisé par cette méthode Withdrawn EP1767665A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005045034A DE102005045034A1 (de) 2005-09-21 2005-09-21 Verfahren zur Passivierung der Oberfläche von beschichteten Metallbändern und Vorrichtung für das Aufbringen der Passivschicht auf ein metallisch beschichtetes Stahlband

Publications (2)

Publication Number Publication Date
EP1767665A2 true EP1767665A2 (fr) 2007-03-28
EP1767665A3 EP1767665A3 (fr) 2008-07-16

Family

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EP06016796A Withdrawn EP1767665A3 (fr) 2005-09-21 2006-08-11 Méthode de passivation de bandes métalliques revêtus et l'appareil utilisé par cette méthode

Country Status (9)

Country Link
US (1) US20070065589A1 (fr)
EP (1) EP1767665A3 (fr)
JP (1) JP5362951B2 (fr)
KR (1) KR101216697B1 (fr)
CN (1) CN1935392B (fr)
AU (1) AU2006206063A1 (fr)
BR (1) BRPI0603941B1 (fr)
CA (1) CA2558562C (fr)
DE (1) DE102005045034A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014006031A1 (fr) * 2012-07-02 2014-01-09 Tata Steel Ijmuiden Bv Procédé de production de fer blanc et produit fabriqué à l'aide du procédé
WO2013104530A3 (fr) * 2012-01-12 2014-05-30 Thyssenkrupp Rasselstein Gmbh Procédé de passivation de fer blanc

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JP4795466B2 (ja) 2007-06-29 2011-10-19 古河電気工業株式会社 金属材料、その製造方法、及びそれを用いた電気電子部品
EP2558543B1 (fr) 2010-04-16 2017-08-30 Valspar Sourcing, Inc. Compositions de revêtement pour des articles d'emballage et procédés de revêtement
EP3878912B1 (fr) 2011-02-07 2023-04-05 Swimc Llc Compositions de revêtement pour contenants et autres articles, et procédés de revêtement
CN102555412B (zh) * 2012-02-09 2015-02-18 浙江仙通橡塑股份有限公司 镜面不锈钢带表面涂胶工装及其生产工艺
EP2882658B1 (fr) 2012-08-09 2021-09-08 Swimc Llc Système de revêtement de récipient
AU2013299578A1 (en) 2012-08-09 2015-02-19 Valspar Sourcing, Inc. Compositions for containers and other articles and methods of using same
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CN110790914A (zh) 2014-04-14 2020-02-14 宣伟投资管理有限公司 制备用于容器和其它制品的组合物的方法以及使用所述组合物的方法
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TWI614275B (zh) 2015-11-03 2018-02-11 Valspar Sourcing Inc 用於製備聚合物的液體環氧樹脂組合物
CN105349977B (zh) * 2015-12-03 2018-03-30 四川省星光钢结构有限公司 一种钢带表面处理设备
CN108116041B (zh) * 2018-01-02 2024-08-13 浙江雅琪诺装饰材料有限公司 一种宽幅圆凹一体压花立式印刷设备
CN108660446B (zh) * 2018-07-20 2024-07-09 江苏诚益通智能装备有限责任公司 一种机械制造用钝化装置
CN113275154A (zh) * 2020-03-19 2021-08-20 安泰科技股份有限公司 涂覆装置
CN111889294B (zh) * 2020-07-27 2021-12-31 吉林省华奥汽车部件有限公司 一种机械加工用钢带涂油装置
CN115505917A (zh) * 2021-06-23 2022-12-23 上海梅山钢铁股份有限公司 一种镀锡板无铬钝化装置及工艺
CN115094426B (zh) * 2022-08-01 2023-11-10 哈尔滨工程大学 一种基于协同机制构筑的复合缓蚀剂的制备方法
CN115449785B (zh) * 2022-08-26 2024-06-25 河南科技大学 一种钽金属表面钝化装置
CN119020768B (zh) * 2024-10-29 2025-02-11 广东斗原精密技术有限公司 一种镀锌钢板加工用防护型涂覆钝化装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013104530A3 (fr) * 2012-01-12 2014-05-30 Thyssenkrupp Rasselstein Gmbh Procédé de passivation de fer blanc
AU2012365534B2 (en) * 2012-01-12 2015-08-13 Thyssenkrupp Rasselstein Gmbh Method for passivating tinplate
RU2593248C2 (ru) * 2012-01-12 2016-08-10 ТиссенКрупп Рассельштайн ГмбХ Способ пассивирования белой жести
WO2014006031A1 (fr) * 2012-07-02 2014-01-09 Tata Steel Ijmuiden Bv Procédé de production de fer blanc et produit fabriqué à l'aide du procédé

Also Published As

Publication number Publication date
BRPI0603941A (pt) 2007-08-14
KR20070033256A (ko) 2007-03-26
CN1935392B (zh) 2012-07-04
JP5362951B2 (ja) 2013-12-11
BRPI0603941B1 (pt) 2017-04-11
CA2558562C (fr) 2014-11-04
JP2007084934A (ja) 2007-04-05
EP1767665A3 (fr) 2008-07-16
US20070065589A1 (en) 2007-03-22
CA2558562A1 (fr) 2007-03-21
KR101216697B1 (ko) 2013-01-09
CN1935392A (zh) 2007-03-28
AU2006206063A1 (en) 2007-04-05
DE102005045034A1 (de) 2007-03-29

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