EP1611269A1 - Procede de realisation d'armatures sanitaires avec aspect acier inoxydable - Google Patents

Procede de realisation d'armatures sanitaires avec aspect acier inoxydable

Info

Publication number
EP1611269A1
EP1611269A1 EP04721193A EP04721193A EP1611269A1 EP 1611269 A1 EP1611269 A1 EP 1611269A1 EP 04721193 A EP04721193 A EP 04721193A EP 04721193 A EP04721193 A EP 04721193A EP 1611269 A1 EP1611269 A1 EP 1611269A1
Authority
EP
European Patent Office
Prior art keywords
nickel
fittings
plating
fitting parts
degreasing
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Withdrawn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
EP04721193A
Other languages
German (de)
English (en)
Inventor
Kurt MÜLLMAIER
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.)
Blanco GmbH and Co KG
Original Assignee
Blanco GmbH and Co KG
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 Blanco GmbH and Co KG filed Critical Blanco GmbH and Co KG
Publication of EP1611269A1 publication Critical patent/EP1611269A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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 invention relates to a method for producing a sanitary fitting with a stainless steel finish.
  • Sanitary fittings in particular water inlet fittings or sanitary shut-off devices in general, are often used directly together with stainless steel sinks and have the disadvantage that they differ significantly from the material of the stainless steel sink, in particular from the look and feel.
  • the object of the present invention is to propose sanitary fittings, in particular water inlet fittings and sanitary shut-off devices in general, which come very close in their appearance and feel to the stainless steel surface of stainless steel sinks until they can hardly be distinguished (stainless steel finish) and a process for their production, which is more economical raw materials to be processed are used.
  • the method according to the invention for producing sanitary fittings with a stainless steel finish can be applied to fittings or their parts which are made from brass, zinc die-casting alloys and plastics. Depending on the starting material, there are minor modifications in the preparation of the fittings or their parts for the subsequent common steps of nickel plating and subsequent chrome plating.
  • the fittings or their parts are made of brass, and these are first surface-polished. Subsequent (or alternatively) pre-brushing is recommended.
  • Pre-brushing is particularly recommended for parts with recesses, whereby the recesses in particular should be pre-brushed.
  • plastic materials are used.
  • Plastic materials generally do not need such pretreatment, although they can be coated with a copper layer in the following nickel plating process for better processing.
  • the fittings or their parts are made from die-cast zinc alloys.
  • a typical brush pattern after nickel-plating the surfaces achieves an effect with the subsequent chrome plating that still shines through as a brush pattern.
  • the combination of the metal layers of nickel and chrome can be designed by choosing the appropriate layer thicknesses so that a silver-gray, matt shine is achieved, which essentially corresponds to the silver-gray tint of stainless steel.
  • a yellow tinge as is known from nickel-plated surfaces, is avoided and, on the other hand, the blue tint of a conventional chrome-plated surface is also avoided.
  • the fitting parts are preferably degreased in one or preferably several separate steps prior to nickel plating, further preferably followed by chemical degreasing, ultrasound degreasing and an electrolytic degreasing step.
  • the nickel bath preferably comprises 60 to 80 grams of nickel metal per liter, which is preferably introduced in the form of nickel chloride and nickel sulfate.
  • a preferred additive in the electrolytic nickel bath is boric acid, which is preferably added at 30 to 50 grams per liter, particularly preferably 40 grams per liter.
  • the nickel plating is preferably carried out with a current density of 4 to 5 amperes per square decimeter, lower current densities being used for the nickel plating of brass parts and higher current densities for previously copper-plated zamak or plastic (in particular ABS) parts.
  • the aforementioned degreasing steps usually take fractions of a minute or just a few minutes.
  • the nickel plating step preferably lasts 15 to 25 minutes, depending on the average layer thickness of nickel to be achieved on the component. With the aforementioned specifications, an average nickel layer thickness in the range of 18 to 24 ⁇ m is achieved. It has been found that such layer thicknesses are sufficient to withstand a subsequent brushing process, as already described above, and to image a sufficient brush structure. Of course, larger layer thicknesses are possible for the present invention, but this is not brings greater benefits more in the appearance of the parts. In any case, the layer thickness of the nickel layer must be chosen so large that a closed nickel surface remains after the brushing process.
  • the parts are rinsed, finally preferably with demineralized water.
  • the parts are then dried in an oven at a temperature of 60 to 75 ° C.
  • the nickel plating is followed by chrome plating, which can be carried out in the same way for all parts.
  • the parts differ from each other in the previously applied IMickle layer, i.e. compared to the electrolytic bath, no longer, so that the following recommendations apply to the processing of brass, zinc die-cast alloys and plastic parts.
  • the electrolysis bath for the chrome plating preferably contains chromium trioxide in an amount of 300 to 350 grams per liter, smaller amounts of sulfuric acid and a conventional catalyst.
  • the chrome plating process usually takes 3 to 4 minutes and is carried out at a current of preferably 6.5 to 8 amperes per square decimeter at a voltage of 3.2 to 5.6 volts. Under these conditions, an average layer thickness in the range of 0.1 to 0.3 ⁇ m is achieved.
  • This chrome layer thickness is sufficient for many applications. In the case of very heavily used surfaces, especially those that are frequently subjected to cleaning with abrasive cleaning agents or cleaning equipment, significantly thicker chrome layers are recommended, although the brush structure must show through to a sufficient extent.
  • the polished and optionally pre-brushed brass parts are subjected to ultrasonic degreasing at a temperature of 60 to 85 ° C., preferably approx. 75 ° C., in an aqueous medium.
  • the aqueous medium contains a degreasing agent, selected from surfactants, amine saponified fatty acids, weak organic acids and / or glycol ethers, in each case in effective amounts.
  • chemical degreasing is carried out one or more times, preferably at temperatures in the range from 40 to 60 ° C.
  • aqueous degreasing medium which contains alkali metal hydroxide as the main constituent and, in addition, further constituents selected from alkali metal silicate, sodium carbonate and phosphates and surfactants.
  • Solubilizers in particular weak complexing agents, may also be present.
  • Alkylbenzenesulfonates ethoxylated fatty alcohols, are used as dispersants or surfactants.
  • the amount of degreasing agent in the medium is preferably reduced, for example halved, with each further degreasing step.
  • cathodic degreasing is preferably carried out, using an aqueous medium in which alkali metal hydroxide is contained as the main constituent of the degreasing agents.
  • the medium can contain one or more alkali silicates, sodium carbonate, phosphates and surfactants.
  • a medium is used as described above for cathodic degreasing, but preferably with a smaller amount of degreasing agent in the medium.
  • a medium is used as described above for cathodic degreasing, but preferably with a smaller amount of degreasing agent in the medium.
  • half of the degreasing agent in the medium can be sufficient.
  • the anodic and cathodic degreasing can also be carried out in the reverse order, with the second electrolytic see degreasing step applies that here is preferably worked with the smaller amount of degreasing agent in the medium.
  • rinsing, neutralizing and rinsing are carried out before the nickel plating, the neutralization preferably taking place with sulfuric acid.
  • the rinsing processes are carried out one or more times.
  • nickel content in the electrolyte of preferably 60 to 80 grams of nickel content per liter, the nickel content being produced from nickel salts, which are preferably nickel chloride hexahydrate and nickel sulfate hexahydrate. These two salts are particularly preferably used next to one another, particularly preferably in a ratio of approximately 1: 4.
  • boric acid is provided with a content of 30 to 40 grams per liter.
  • the duration of the nickel-plating process depends, of course, on the desired layer thickness. Usually 15 to 25 minutes are sufficient for nickel plating at a voltage of 6.2 to 8.3 volts and a current density of approx. 4 amperes per square decimeter.
  • the nickel layer formed in this way has an average layer thickness in the range from 18 to 24 ⁇ m. This layer thickness is thick enough that a brush structure can be introduced into the surface, the brush structure in terms of its look and feel should correspond to a brush structure which is obtained with grinding wheels of type SBI-A from 3M, diameter 250 mm, if this Grinding wheels are driven at a working speed of 600 revolutions per minute. Vernickelun ⁇ of copper-plated zamak and plastic parts
  • the zamak parts (generally die-cast zinc alloy parts) are first provided with a copper layer in order to smooth the surface, i.e. in order to close pores from the die casting process on the surface and to ensure a smooth surface. Then the copper-plated zamak parts can be treated like the ABS parts, whether they are copper-plated or not.
  • a degreasing agent which is predominantly formed by alkali hydroxide, but also comprises larger proportions of sodium carbonate, alkali metal silicates and alkylphenol ethoxylates.
  • surfactants can also be present in smaller quantities.
  • Ultrasonic degreasing is then carried out, a degreasing agent being added to the aqueous degreasing medium, which is formed predominantly by sodium borate and sodium carbonate.
  • a mixture of different surfactants is also used.
  • a cathodic and then anodic degreasing is then carried out as a further degreasing step, in which context the medium essentially contains sodium carbonate as well as sodium metasilicates and smaller amounts of sodium hydroxide as degreasing agent.
  • nickel plating process is then carried out, as already described above, although the zamak and ABS parts are preferably operated with a somewhat higher current density.
  • nickel layer thicknesses in the range from 18 to 24 ⁇ m are achieved in the period from 15 to 25 minutes.
  • aqueous degreasing medium containing degreasing agents, most of which are formed by sodium hydroxide. It also contains significant amounts of sodium carbonate, small amounts of sodium metasilicate, and alkylphenol ethoxylates and surfactants.
  • An ultrasonic degreasing is then carried out in an aqueous degreasing medium with a degreasing agent which is predominantly formed from sodium borate and smaller amounts of sodium carbonate and various surfactants.
  • Chromium plating is carried out with a chromium content of 300 to 350 grams per liter of chromium trioxide, small amounts of sulfuric acid and a catalyst consisting of fluorosilicate and sodium chromate.
  • the period in which the chrome plating is carried out is 3 to 4 minutes and is carried out at a current of 6.5 to 8 amperes per square decimeter at a voltage of 3.2 to 5.6 volts.
  • average chromium starch layers are obtained, which are 0.1 to 0.3 ⁇ m.
  • the fittings obtained in this way have a surface appearance and haptic that can hardly be distinguished from the stainless steel finish compared to original brushed stainless steel surfaces.
  • Nickel-plating of copper-plated zamak and ABS parts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Prostheses (AREA)

Abstract

L'invention a pour objet la réalisation de manière générale d'armatures sanitaires, en particulier d'armatures d'amenée d'eau et d'organes de fermeture sanitaires, lesdites armatures se rapprochant du point de vue optique et haptique des surfaces d'acier inoxydable d'éviers en acier inoxydable à un point tel qu'elles ne peuvent pratiquement pas être différenciées de celles-ci (aspect acier ), à partir de matériaux de départ à usiner peu coûteux. A cet effet, on réalise une armature ou des parties d'armatures en laiton, les armatures ou parties d'armature sont meulées ou polies, les surfaces visibles des armatures ou parties d'armature sont nickelées, la surface nickelée des armatures ou parties d'armatures est meulée et/ou brossée, et les surface nickelées meulées ou brossées des armatures ou parties d'armature sont chromées.
EP04721193A 2003-03-19 2004-03-17 Procede de realisation d'armatures sanitaires avec aspect acier inoxydable Withdrawn EP1611269A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10312308A DE10312308A1 (de) 2003-03-19 2003-03-19 Verfahren zur Herstellung von Sanitärarmaturen mit Edelstahlfinish
PCT/EP2004/002812 WO2004083491A1 (fr) 2003-03-19 2004-03-17 Procede de realisation d'armatures sanitaires avec aspect acier inoxydable

Publications (1)

Publication Number Publication Date
EP1611269A1 true EP1611269A1 (fr) 2006-01-04

Family

ID=32945997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04721193A Withdrawn EP1611269A1 (fr) 2003-03-19 2004-03-17 Procede de realisation d'armatures sanitaires avec aspect acier inoxydable

Country Status (5)

Country Link
US (1) US7854831B2 (fr)
EP (1) EP1611269A1 (fr)
CA (1) CA2526077C (fr)
DE (1) DE10312308A1 (fr)
WO (1) WO2004083491A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE497033T1 (de) * 2006-02-27 2011-02-15 Hdo Druckguss Und Oberflaechentechnik Gmbh Verfahren zur herstellung eines geprägten und galvanisierten druckgussbauteils
US20080173549A1 (en) * 2006-06-27 2008-07-24 Moline Andrew J Direct current chrome plating process and variant layered chrome product
ES2338627B1 (es) * 2009-08-28 2011-06-08 Zanini Auto Grup S.A. Tratamiento de piezas con zonas de acabado metalizado de aspecto diferenciado.
DE102011075787B3 (de) 2011-05-13 2012-07-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Herstellen eines Kunststoffteils und Haushaltsgerät mit einem solchen Kunststoffteil
DE102011106099B4 (de) * 2011-06-09 2016-06-02 Keuco Gmbh & Co. Kg Verfahren zur Beschichtung von Bauteilen
DE202011103736U1 (de) * 2011-07-27 2012-11-20 HDO Druckguss- und Oberflächentechnik GmbH Galvanisch beschichtetes Bauteil
DE102012107243B3 (de) 2012-08-07 2014-04-03 Ideal Standard International B.V.B.A. Sanitäres Wasserventil mit einem eine antibakterielle Beschichtung aufweisenden Auslaufteil
DE202013007856U1 (de) 2013-09-03 2013-09-18 Omp S.P.A. Siphon
DE102015105761A1 (de) * 2015-04-15 2016-10-20 HDO Druckguss- und Oberflächentechnik GmbH Bauteil mit aufgebrachter Chromschicht mit Wolframanteil und Molybdänanteil und Verfahren zur Herstellung eines solchen Bauteils mittels ternärer Abscheidung
DE102015006552A1 (de) 2015-05-21 2016-11-24 Audi Ag Verfahren zum Herstellen eines Bauteils mit einer strukturierten Oberfläche für eine Bedieneinrichtung eines Kraftfahrzeugs
FR3037080B1 (fr) * 2015-06-08 2017-06-02 Le Bronze Ind Procede de protection d'un alliage de type cuivre-zinc par procede sol-gel
DE102015011404A1 (de) 2015-08-29 2017-03-16 Audi Ag Bauteil für eine Bedieneinrichtung eines Kraftfahrzeugs mit einer teilweise strukturierten Oberfläche
DE102022106360A1 (de) * 2022-03-18 2023-09-21 Grohe Ag Verfahren zur Herstellung eines Armaturengehäuses für eine Sanitärarmatur sowie Armaturengehäuse für eine Sanitärarmatur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL111001C (fr) * 1957-12-03
DE1496930A1 (de) * 1964-01-11 1969-12-18 Res Holland Nv Verfahren zum Aufbringen von korrosionsbestaendigen und verschleissbestaendigen Schichten
DE1621156A1 (de) * 1967-05-17 1971-04-22 Roll Fa Gottlieb Verfahren zum Galvanisieren von Kunststoffteilen
US3533921A (en) * 1968-03-08 1970-10-13 Frost Co Method of finishing the surface of metal articles
DE1771181A1 (de) * 1968-04-17 1971-11-25 Lustre Finish Inc Mattierverfahren fuer Metallverblendungen
US5006207A (en) * 1989-07-27 1991-04-09 Gerber Plumbing Fixtures Corp. Method of decorating an expansive surface of a metallic faucet spout or other plumbing fixture
EP0504704A1 (fr) * 1991-03-20 1992-09-23 Siemens Aktiengesellschaft Prétraitement pour matériaux métalliques pour la déposition de métaux par électrolyse
JP2670961B2 (ja) * 1993-03-19 1997-10-29 茂雄 依田 装飾体の製造方法
DE19710623A1 (de) * 1996-04-05 1997-11-06 Grohe Kg Hans Sanitärer Gegenstand und Verfahren zur Herstellung desselben
DE19846589A1 (de) * 1998-10-09 2000-04-13 Grohe Armaturen Friedrich Beschichteter Gegenstand mit Kennzeichnung
EP1010777A3 (fr) * 1998-12-01 2002-07-31 Masco Corporation Of Indiana Article revêtu avec un revêtement multicouche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004083491A1 *

Also Published As

Publication number Publication date
WO2004083491A1 (fr) 2004-09-30
US7854831B2 (en) 2010-12-21
US20060060473A1 (en) 2006-03-23
CA2526077A1 (fr) 2004-09-30
CA2526077C (fr) 2011-09-20
DE10312308A1 (de) 2004-10-07
WO2004083491A8 (fr) 2005-09-29

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