BS EN ISO 19598-2016 Metallic coatings Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment《金属镀层 附加无Cr(VI)处理的铁或钢表面锌和锌合金电镀层》.pdf

1、BS EN ISO 19598:2016Metallic coatings Electroplated coatings of zincand zinc alloys on iron or steelwith supplementary Cr(VI)-freetreatment (ISO 19598:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 19598:2016 BRITISH STANDARDNational forewordThis Brit

2、ish Standard is the UK implementation of EN ISO 19598:2016. The UK participation in its preparation was entrusted to Technical Committee STI/33, Electrodeposited and related coatings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication do

3、es not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 86512 1 ICS 25.220.40 Compliance with a British Standard cannot confer immunity from l

4、egal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19598 November 2016 ICS 25.22

5、0.40 English Version Metallic coatings - Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment (ISO 19598:2016) Revtements mtalliques - Revtements lectrolytiques de zinc et dalliages de zinc sur du fer ou de lacier avec traitement supplmentaire sans

6、 Cr(VI) (ISO 19598:2016) Metallische berzge - Galvanische Zink- und Zinklegierungsberzge auf Eisenwerkstoffen mit zustzlichen Cr(VI)-freien Behandlungen (ISO 19598:2016) This European Standard was approved by CEN on 1 October 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regula

7、tions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member

8、. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN

9、 members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, P

10、ortugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any

11、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19598:2016 EBS EN ISO 19598:2016EN ISO 19598:2016 (E) 3 European foreword This document (EN ISO 19598:2016) has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” in collaboration

12、 with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an id

13、entical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held respo

14、nsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finla

15、nd, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of IS

16、O 19598:2016 has been approved by CEN as EN ISO 19598:2016 without any modification. BS EN ISO 19598:2016ISO 19598:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Designation 24.1 Electrodeposited coatings . 24.2 Passivation 24.3 Post treatment . 24.4

17、Significant (functional) surfaces 34.5 Examples of designations 35 Information to be supplied by the purchaser to the electroplater 36 Basis materials . 47 Coating and processing 47.1 Surface preparation and deposition of zinc or zinc-alloy coating 47.2 Supplementary treatments 47.2.1 Passivation la

18、yers 47.2.2 Post treatment . 57.3 Barrel-/rack-plating (handling of parts) 57.3.1 Barrel electroplating . 57.3.2 Rack electroplating 57.4 Hydrogen embrittlement . 57.4.1 Basic factors . 57.4.2 Choice of procedure 68 Requirements to be met by coatings and test methods . 78.1 Thickness . 78.2 Adhesion

19、 . 78.3 Absence of Cr(VI) 88.4 Accelerated corrosion testing 88.4.1 General 88.4.2 Minimum corrosion resistance of passivated zinc and zinc-alloy coatings 89 Test report 109.1 General information 109.2 Coatings on materials having a tensile strength 1 000 N/mm2 .109.3 Test results. 10Bibliography .1

20、1 ISO 2016 All rights reserved iiiContents PageBS EN ISO 19598:2016ISO 19598:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out throu

21、gh ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collabora

22、tes closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval cr

23、iteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject

24、of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade nam

25、e used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO)

26、 principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 107, Metallic and other inorganic coatings, Subcommittee SC 3, Electrodeposited coatings and related finishes.iv ISO 2016 All rights reserve

27、dBS EN ISO 19598:2016ISO 19598:2016(E)IntroductionThe chromium(VI) free systems differ in 2 points from the chromium(VI)-containing systems:a) there is no self-healing of the system;b) higher temperature resistance ( 150 C), the limit for chromium(VI) containing systems, is 70 C. ISO 2016 All rights

28、 reserved vBS EN ISO 19598:2016BS EN ISO 19598:2016Metallic coatings Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment1 ScopeThis International Standard applies to electrodeposited zinc and zinc-alloy coatings on iron and steel with Cr(VI)-free

29、passivation. The zinc-alloy coatings contain nickel or iron as alloying elements (referred to as zinc/nickel and zinc/iron coatings, respectively).The main purpose of the coatings or coating systems is protecting iron and steel components against corrosion.This International Standard specifies the d

30、esignations to be used for the above coating systems, the minimum corrosion resistance to be achieved in specified test procedures, and the minimum coating thicknesses required.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are ind

31、ispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2080, Metallic and other inorganic coatings Surface treatment, metallic and other inorganic coatings Voca

32、bularyISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methodsISO 3613:2010, Metallic and other inorganic coatings Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys Test methodsISO 9227, Corrosion tests in artificial atmosp

33、heres Salt spray testsISO 9587, Metallic and other inorganic coatings Pretreatment of iron or steel to reduce the risk of hydrogen embrittlementISO 9588, Metallic and other inorganic coatings Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlementISO 27830:2008, Metalli

34、c and other inorganic coatings Guidelines for specifying metallic and inorganic coatings3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 2080 apply.INTERNATIONAL STANDARD ISO 19598:2016(E) ISO 2016 All rights reserved 1BS EN ISO 19598:2016ISO 19598:201

35、6(E)4 Designation4.1 Electrodeposited coatingsThe electrodeposited coatings shall be composed of zinc or zinc-alloys as listed in Table 1.Table 1 Designation of electrodeposited coatingsSymbol DefinitionZn Zinc coating without alloying elementZnFe Zinc-alloy containing a mass fraction of 0,3 % to 1,

36、0 % ironZnNi Zinc-alloy containing a mass fraction of 12 % to 16 % nickel4.2 PassivationPassivation is the production of conversion coatings by treating coatings with suitable Cr(VI)-free solutions in order to improve their corrosion resistance. The conversion coating may optionally be dyed.Since th

37、e Cr(VI)-free passivations are new coating systems, the new nomenclature is listed in Table 2.Table 2 PassivationsType of passivation CodeColouration, surface appearanceaNotesTransparent An Colourless to coloured and iridescentOften referred to as “thin-layer passivation”Iridescent Cn Coloured and i

38、ridescentOften referred to as “thick-layer passivation”Black Fn BlackaTints are permissible.4.3 Post treatmentApplication of a sealant or top coats increases corrosion resistance.Sealant layers normally show a thickness of up to 2 m and are composed of Cr(VI)-free organic and/or inorganic compounds.

39、 Coatings that can be removed with cold cleaning agents, such as those with an oil, grease or wax base, are not considered as sealants in the context of this International Standard.Top coats are normally thicker than 2 m and are Cr(VI)-free organic thin coatings which may need elevated temperature c

40、uring. Particularly for coatings with black passivation, a postdip can be used for increasing corrosion resistance and improving colour depth.The impact of the post treatments mentioned to component properties such as contact resistance, weldability, compatibility with fuels, performance in bonded j

41、oints, etc., when in service shall be assessed on a case by case basis.Since the range of surface modifications is very large, the use of a post treatment mentioned and the type shall be agreed on in the case of surface coatings that are subject to particular requirements.NOTE The post treatment men

42、tioned normally remove the interference colours produced by passivation.2 ISO 2016 All rights reservedBS EN ISO 19598:2016ISO 19598:2016(E)Table 3 Post treatmentSymbol MeaningTx Sealant may or may not be presentaT0 No sealantT2nL Sealant without integrated lubricantbT2yL Sealant with integrated lubr

43、icantbT4 Subsequently added lubricantT7nL Top coat without integral lubricantbT7yL Top coat with integral lubricantbNOTE T4 is not considered.aLeft to the choice of the coater.bOptional designation of nL or yL, when required.4.4 Significant (functional) surfacesComponents with complex shapes, partic

44、ularly those having cavities, may not be capable of meeting the corrosion resistance and minimum thickness criteria required in the accelerated corrosion tests at all the points on the electroplated surface. In such cases, the significant surfaces for the coating system shall be indicated on the dra

45、wing by a dot-and-dash line.If the purchaser does not specify a significant surface, the definition given in ISO 27830:2008, Clause 6 shall apply.4.5 Examples of designationsDesignation of a zinc/nickel alloy coating on a steel (Fe) component having a minimum local coating thickness of 8 m (8) and i

46、ridescent passivation (Cn):Electroplated coating ISO 19598 Fe/ZnNi8/Cn/T0Designation of a zinc/iron alloy coating on a steel (Fe) component having a minimum local coating thickness of 8 m (8) with black passivation (Fn) and sealant (T2):Electroplated coating ISO 19598 Fe/ZnFe8/Fn/T2Designation of a

47、zinc coating on a steel (Fe) component having a minimum local coating thickness of 12 m (12) and black passivation (Fn); application of a subsequent sealant is left to the choice of the coater:Electroplated coating ISO 19598 Fe/Zn12/Fn/Tx5 Information to be supplied by the purchaser to the electropl

48、aterThe minimum information to be provided by the purchaser to the electroplater shall comprise the following:a) the tensile strength of the component (to enable the requirements in 7.4 to be taken into account);b) component information (basis material, production method, heat treatment);c) informat

49、ion on significant surfaces as required by 4.4;d) designation of the coating to be applied (see 4.5).If desired, further requirements, such as appearance, friction properties and media resistance, may be imposed on the properties of the coatings to be applied and the testing extended accordingly. ISO 2016 All rights reserved 3BS EN ISO 19598:2016ISO 19598:2016(E)If necessary, additional information relating to requirements or restrictions to be imposed on the coating process shall be provide