EP1780311A1 - Procédé de fabrication d'une surface matte-satinée - Google Patents

Procédé de fabrication d'une surface matte-satinée Download PDF

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Publication number
EP1780311A1
EP1780311A1 EP05109770A EP05109770A EP1780311A1 EP 1780311 A1 EP1780311 A1 EP 1780311A1 EP 05109770 A EP05109770 A EP 05109770A EP 05109770 A EP05109770 A EP 05109770A EP 1780311 A1 EP1780311 A1 EP 1780311A1
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EP
European Patent Office
Prior art keywords
layer
matt
workpiece
sulfamate
gloss
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
EP05109770A
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German (de)
English (en)
Other versions
EP1780311B1 (fr
Inventor
Wolf-Dieter Franz
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to EP05109770A priority Critical patent/EP1780311B1/fr
Priority to ES05109770T priority patent/ES2306023T3/es
Priority to AT05109770T priority patent/ATE394526T1/de
Priority to DE502005004040T priority patent/DE502005004040D1/de
Priority to US12/083,843 priority patent/US8105473B2/en
Priority to PCT/EP2006/067618 priority patent/WO2007045688A1/fr
Publication of EP1780311A1 publication Critical patent/EP1780311A1/fr
Application granted granted Critical
Publication of EP1780311B1 publication Critical patent/EP1780311B1/fr
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    • 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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • C25D5/611—Smooth layers
    • 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
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

Definitions

  • the present invention relates to the production of satin surfaces of workpieces, in particular automotive parts.
  • Galvanic processes are also known in which galvanic Ni layers are given an adjustable silk mattness by adding to the galvanic solution an organic additive which drops onto the surface like a droplet and leads to disturbances of the surface structure.
  • the degree of dullness or silk gloss must be set relatively inconveniently over the added amounts before starting a process and the organic additives must be filtered out in a process interruption before a new process start so as not to disturb the new process.
  • the setting mentioned must therefore be repeated with each new process start-up and is therefore complicated and disadvantageous in terms of reproducibility.
  • the invention is based on the technical problem of specifying an alternative method for producing satin matt metal surfaces on workpieces.
  • a method is provided with the steps of: producing a smooth surface on a workpiece, applying a matt Ni layer by electrodeposition without organic matting additives, applying a sulfamate-Ni layer.
  • the basic idea of the invention is to apply a matt Ni layer on a smooth workpiece surface and to adjust the mattness over the thickness of the Ni layer.
  • the invention is directed to galvanic Ni layers in which no organic matting additives are used. Rather, in a preferred embodiment of the invention may be a known Wattsche Ni layer, which is technically simple and easy to control.
  • the degree of gloss or degree of matting can be determined by various galvanic parameters, in particular by treatment time and / or Amperage, easy and well adjustable control. The need to filter the solutions for filtering organic matting additives is also eliminated.
  • the abovementioned sulfamate-Ni layer is preferably protected against environmental influences by means of a further finishing layer, it being understood that this finishing layer can also have a decorative function.
  • a galvanic Cr layer which may have a thickness between 0.1 and 3 microns, with a lower limit of 0.5 microns or an upper limit of 1 micron is particularly preferred.
  • a conventional and available through commercially available solutions gloss chrome process can be used because the satin finish of the surface is already present.
  • the invention is not limited to Cr layers.
  • Other decorative layers may also be used, such as Ag, Au or Pt metals.
  • black chrome layers are also suitable, Ti layers, in particular sputtered Ti layers, or else non-metallic layers such as (clear) lacquers or (sputtered) ceramic layers.
  • the smooth surface on the workpiece under the matte Ni layer may for example be a polished workpiece surface itself or even an applied metal layer. If an inventively preferred gloss Ni layer is used here, this has the particular advantage of very well leveling any surface defects and defects. Thus, it can improve the quality of the final gloss content of the finished metal surface according to the invention.
  • Galvanic processes for bright Ni layers are well known and need not be detailed here. There are commercial solutions available which may include, for example, Ni sulfate, organic brighteners and so-called levelers. Suitable current densities in this range are 1 to 3 A / dm 2 . It may also be advantageous to provide a shiny metal layer, for example a Cu layer, below the glossy Ni layer.
  • the matte galvanic Ni layer is preferably applied as a known and technically well-controlled Wattsche Ni layer, ie as a galvanic Ni layer without organic matting additives.
  • Current strengths in the range of 0.1 to 2 A / dm 2 , better 0.1 to 1 A / dm 2 are preferred here.
  • the layer thickness of the matt layer should be comparatively low and may be between 0.05 and 5 .mu.m, with upper limits of 4 .mu.m, 3 .mu.m, 2 .mu.m and more preferably 1 .mu.m and lower limits of 0.075 .mu.m and more preferably 0.1 .mu.m even cheaper.
  • the layer thickness is ultimately determined by optical / aesthetic considerations.
  • the electrodeposition of a sulfamate-Ni layer is also conventional and known.
  • the corresponding solutions contain nickel sulfamate, that is, the salt of amidosulfuric acid.
  • the sulphamate Ni layer rounds and reinforces the aforementioned bulbous or otherwise matte Ni layer, it does not really level it.
  • the sulfamate-Ni layer also enhances the grain size without changing fundamentals on the granularity described above as "nodular". It thus receives the matte character, possibly only slightly increases the gloss, but above all provides increased material strength for reasons of stability and resilience and for better wiping sensitivity or better dirt-repellent properties. The roughness reduced by the rounding provides less grip to soiling.
  • a favorable thickness for the suifamate Ni layer is in the range of 5 and 20 microns, with a lower limit of 10 and an upper limit of 15 microns are more preferred. It has already been mentioned that a protective topcoat is preferred. If the metallic Ni color is of interest, a clearcoat can also be used here.
  • a particular advantage of the invention in addition to the good optical properties and the good resilience and dirt resistance of surfaces according to the invention is that can be adjusted by galvanic parameters in a very simple manner, the degree of gloss or matte degree.
  • Different optical properties can be generated with one and the same basic process, that is, the same solution compositions, identical baths, etc. In particular, from batch to batch simply over the amperage, or even cheaper about the treatment time, the dullness are set. The thicker the matte Ni layer, the higher the matte degree.
  • Figures 1 - 5 show various intermediate stages of a method according to the invention.
  • FIG. 1 schematically shows a surface of the plastic door handle 1.
  • a glossy Ni layer 2 is deposited in a manner known per se.
  • the surface of the plastic door handle can be previously germinated and prepared, for example, with a chemically deposited thin metal layer for the electroplating process.
  • the glossy Ni layer 2 is deposited in a standard electroplating process at 2 A / dm 2 from an aqueous solution containing about 180 g / l nickel sulfate, about 150 g / l nickel chloride and about 50 g / l boric acid as a pH buffer and at Gloss Ni baths contains commercially available organic brighteners.
  • the bath Slotonik-50 of the company Schlötter comes into consideration.
  • the purpose of the glossy Ni layer 2 is to provide a glossy base that is as error-free as possible, and is distinguished by its good ability to level initially existing imperfections.
  • Their thickness is not really essential to the subsequent process and depends, on the one hand, on the overall material thickness targeted, especially with regard to durability, and on the surface defects to be leveled. Typical orders of magnitude are in the range of 10-30 microns.
  • a matt wadding Ni layer 3 is applied on the glossy Ni layer 2, according to FIG. 3, a matt wadding Ni layer 3 is applied. This is carried out at a current density of about 0.5 A / dm 2 from an aqueous solution containing 210 g / l nickel sulfate, 35 g / l nickel chloride and 40 g / l boric acid without further additives.
  • the preferred layer thickness range is between 0.1 and 1 ⁇ m, wherein the mattness of the finally resulting layer is adjusted via the layer thickness. In this embodiment, 0.2 microns are deposited.
  • FIG. 3 illustrates that this layer thickness only makes sense in terms of averaging.
  • the growth is very grainy or "bulbous”
  • the individual grains shown schematically in Figure 3 with increasing average layer thickness are larger and have decreasing average distances.
  • the grains are finally close, resulting in a matte layer that does not let the gloss of the underlying gloss Ni layer 2 through.
  • a sulfamate Ni layer 4 is deposited on the Watt Ni layer 3.
  • the grains are thereby reinforced, rounded the corners a bit and in particular the niches and angles lying on the edge of the grains filled.
  • a 12 ⁇ m thick layer is deposited at a galvanic current density of 1 A / dm 2 .
  • the aqueous solution contains 36% by volume of 60% by weight nickel sulphamate solution.
  • the galvanic solution contains 5 g / l nickel chloride and 35 g / l boric acid. Considered, for example, the bathroom Schlötter MS.
  • a finishing layer is optionally applied.
  • this is a conventional gloss Cr layer 5 of thickness 1.5 .mu.m.
  • the overall layer is well protected against environmental influences and resistant to oxidation. It ultimately shows a metallic Cr gloss, which is desirable here. Due to the somewhat rounding properties of the sulfamate-Ni layer, the sensitivity to dirt and the roughness are significantly improved and well suited for applications in the interior of motor vehicles.
  • the exemplary embodiment is a simple process control with a control of the essential layer properties over the treatment time, in particular a control of the mattness of the resulting silk gloss over the time of the Watt's nickel process.
  • the described disadvantages of organic matting additives omitted. The process is thus practicable, easy to reproduce and inexpensive.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Glass Compositions (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP05109770A 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée Active EP1780311B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP05109770A EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée
ES05109770T ES2306023T3 (es) 2005-10-20 2005-10-20 Produccion de superficies metalicas mates como la seda.
AT05109770T ATE394526T1 (de) 2005-10-20 2005-10-20 Herstellung seidenmatter metalloberflächen
DE502005004040T DE502005004040D1 (de) 2005-10-20 2005-10-20 Herstellung seidenmatter Metalloberflächen
US12/083,843 US8105473B2 (en) 2005-10-20 2006-10-20 Production of satin metal surfaces
PCT/EP2006/067618 WO2007045688A1 (fr) 2005-10-20 2006-10-20 Procede pour produire des surfaces metalliques satinees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05109770A EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée

Publications (2)

Publication Number Publication Date
EP1780311A1 true EP1780311A1 (fr) 2007-05-02
EP1780311B1 EP1780311B1 (fr) 2008-05-07

Family

ID=35976738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05109770A Active EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée

Country Status (6)

Country Link
US (1) US8105473B2 (fr)
EP (1) EP1780311B1 (fr)
AT (1) ATE394526T1 (fr)
DE (1) DE502005004040D1 (fr)
ES (1) ES2306023T3 (fr)
WO (1) WO2007045688A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014180537A1 (fr) * 2013-05-10 2014-11-13 Oerlikon Trading Ag, Trübbach Régulation du degré de brillance de substrats en matière plastique à finition métallique
EP3170925A1 (fr) * 2015-11-23 2017-05-24 Franz GmbH Procede de fabrication d'une surface metallique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2488560A (en) * 2011-03-01 2012-09-05 Bentley Motors Ltd Vehicle trim components
US8529747B2 (en) * 2011-07-12 2013-09-10 The Boeing Company Methods for repairing steel components
FR3004735B1 (fr) * 2013-04-23 2015-07-03 Dourdin Procede de vernissage de pieces metallisees
CN110760789A (zh) * 2019-11-04 2020-02-07 丽水市建川五金制造有限公司 一种表面处理门把手的表面精细处理工艺

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152971A (en) * 1960-07-26 1964-10-13 Udylite Corp Electrodeposition of fine-grained lustrous nickel
GB1074389A (en) * 1964-12-15 1967-07-05 Res Holland Nv Improvements in or relating to nickel electro plating
US3449223A (en) * 1962-05-30 1969-06-10 Jules Marie Odekerken Method for covering objects with a decorative bright nickel/chromium coating,as well as objects covered by applying this method
US3644183A (en) * 1963-01-09 1972-02-22 Res Holland Nv Process for coating an object with a bright nickel/chromium coatin
GB1515361A (en) * 1975-07-09 1978-06-21 Electrofoils Ltd Metal finishing of metallic foils by electrodeposition
EP0431228A1 (fr) * 1988-06-09 1991-06-12 Kanto Kasei Co., Ltd. Procédé de dépôt électrolytique brillant de cuivre-nickel-chromium, donnant une résistance excellente à la corrosion et couche de placage obtenue par le procédé
WO2004090198A2 (fr) * 2003-04-11 2004-10-21 Hille & Müller GMBH Feuillard lamine a froid et revetu par voie electrolytique, de preference destine a la production de douilles de batteries et son procede de revetement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US926800A (en) * 1908-08-31 1909-07-06 Henry V Young Cover for automobile transmission-gears.
US3090733A (en) * 1961-04-17 1963-05-21 Udylite Res Corp Composite nickel electroplate
AU2003901058A0 (en) * 2003-03-10 2003-03-20 Microtechnology Centre Management Limited Electroplating pcb components

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152971A (en) * 1960-07-26 1964-10-13 Udylite Corp Electrodeposition of fine-grained lustrous nickel
US3449223A (en) * 1962-05-30 1969-06-10 Jules Marie Odekerken Method for covering objects with a decorative bright nickel/chromium coating,as well as objects covered by applying this method
US3644183A (en) * 1963-01-09 1972-02-22 Res Holland Nv Process for coating an object with a bright nickel/chromium coatin
GB1074389A (en) * 1964-12-15 1967-07-05 Res Holland Nv Improvements in or relating to nickel electro plating
GB1515361A (en) * 1975-07-09 1978-06-21 Electrofoils Ltd Metal finishing of metallic foils by electrodeposition
EP0431228A1 (fr) * 1988-06-09 1991-06-12 Kanto Kasei Co., Ltd. Procédé de dépôt électrolytique brillant de cuivre-nickel-chromium, donnant une résistance excellente à la corrosion et couche de placage obtenue par le procédé
WO2004090198A2 (fr) * 2003-04-11 2004-10-21 Hille & Müller GMBH Feuillard lamine a froid et revetu par voie electrolytique, de preference destine a la production de douilles de batteries et son procede de revetement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014180537A1 (fr) * 2013-05-10 2014-11-13 Oerlikon Trading Ag, Trübbach Régulation du degré de brillance de substrats en matière plastique à finition métallique
RU2672058C2 (ru) * 2013-05-10 2018-11-09 Эрликон Серфиз Солюшнз Аг, Пфеффикон Регулирование уровня блеска пластмассовых основ с металлизированной отделкой
US10273576B2 (en) 2013-05-10 2019-04-30 Oerlikon Surface Solutions Ag, Pfaffikon Gloss degree adjustment of plastics substrates having a metallic finish
EP3170925A1 (fr) * 2015-11-23 2017-05-24 Franz GmbH Procede de fabrication d'une surface metallique
WO2017088982A1 (fr) * 2015-11-23 2017-06-01 Franz GmbH Procédé de fabrication d'une surface métallique
EP3604623A1 (fr) * 2015-11-23 2020-02-05 Franz GmbH Procédé de fabrication d'une surface métallique

Also Published As

Publication number Publication date
US20090211913A1 (en) 2009-08-27
US8105473B2 (en) 2012-01-31
EP1780311B1 (fr) 2008-05-07
DE502005004040D1 (de) 2008-06-19
ES2306023T3 (es) 2008-11-01
ATE394526T1 (de) 2008-05-15
WO2007045688A1 (fr) 2007-04-26

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