DIN EN ISO 14713-2-2010 Zinc coatings - Guidelines and recommendations for the protection against corrosion of iron and steel in structures - Part 2 Hot dip galvanizing (ISO 14713-.pdf

1、May 2010 Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25

2、.220.40; 91.080.10!$bO4“1634417www.din.deDDIN EN ISO 14713-2Zinc coatings Guidelines and recommendations for the protection against corrosion ofiron and steel in structures Part 2: Hot dip galvanizing (ISO 14713-2:2009)English translation of DIN EN ISO 14713-2:2010-05Zinkberzge Leitfden und Empfehlu

3、ngen zum Schutz von Eisen- und Stahlkonstruktionen vorKorrosion Teil 2: Feuerverzinken (ISO 14713-2:2009)Englische bersetzung von DIN EN ISO 14713-2:2010-05Revtements de zinc Lignes directrices et recommandations pour la protection contre la corrosion du fer et delacier dans les constructions Partie

4、 2: Galvanisation chaud (ISO 14713-2:2009)Traduction anglaise de DIN EN ISO 14713-2:2010-05DIN EN ISO 14713-3:2010-05supersedesDIN EN ISO 14713:1999-05www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 25 pagesDIN EN ISO 14713-1:2010-05 an

5、dTogether with04.10 DIN EN ISO 14713-2:2010-05 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” (Secretariat: KATS, Republic of Korea), Subcommittee SC 4 “Hot dip coatings (galvanized,

6、 etc.)” (Secretariat: BSI, United Kingdom) and has been adopted as EN ISO 14713-2:2009 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” (Secretariat: BSI, United Kingdom) within the scope of the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). The r

7、esponsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-01-75 AA Schmelztauchberzge. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 146

8、1 DIN EN ISO 1461 ISO 8044 DIN EN ISO 8044 ISO 10684 DIN EN ISO 10684 ISO 12944-5 DIN EN ISO 12944-5 Amendments This standard differs from DIN EN ISO 14713:1999-05 as follows: a) DIN EN ISO 14713, Zinc coatings Guidelines and recommendations for the protection against corrosion of iron and steel in

9、structures has been divided into three parts: Part 1: General principles of design and corrosion resistance Part 2: Hot dip galvanizing Part 3: Sherardizing b) This part of ISO 14713 only provides design guidance for hot dip galvanizing of articles. c) The normative references (Clause 2) have been u

10、pdated to take into account the very latest standards available to readers. d) Additional guidance on the effect of the iron/steel surface composition has been provided (6.1.1, Table 1). e) Additional information has been provided on the effect of thermal cutting processes (6.4) and the influence of

11、 internal stresses in the basis steel during hot dip galvanizing (6.5). Previous editions DIN EN ISO 14713: 1999-05 DIN EN 14713-2:2010-05 3 National Annex NA (informative) Technical rules on hot dip galvanizing The standard series DIN EN ISO 14713-2 specifies zinc coatings for the protection agains

12、t corrosion of iron and steel and consists of the following parts, under the general title Zinc coatings Guidelines and recommendations for the protection against corrosion of iron and steel in structures Part 1: General principles of design and corrosion resistance Part 2: Hot dip galvanizing Part

13、3: Sherardizing The standard DIN EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods specifies general properties of and test methods for coatings applied by hot dipping fabricated articles. In terms of German building regulations, DASt-Rich

14、tlinie 022 “Feuerverzinken von tragenden Stahlbauteilen” (Hot dip galvanized coatings on structural steel components) published by the Deutscher Ausschuss fr Stahlbau (German Committee for Steel Construction) applies. This Richtlinie specifies additional requirements for pre-treatment, the hot dip g

15、alvanizing method, testing and acceptance which are not included in DIN EN ISO 1461 and DIN EN ISO 14713-2. In addition to the above-mentioned technical rules, there are also several relevant standards on specific products. For instance, DIN EN ISO 10684, Fasteners Hot dip galvanized coatings deals

16、with galvanized fasteners such as nuts and screws and DIN EN 10240, Internal and/or external protective coatings for steel tubes Specification for hot dip galvanized coatings applied in automatic plants specifies properties and requirements for galvanized coatings on tubes produced in automated manu

17、facturing plants. DIN EN ISO 14713-2:2010-05 4 National Annex NB (informative) Bibliography DIN EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods DIN EN ISO 8044, Corrosion of metals and alloys Basic terms and definitions DIN EN ISO 10684,

18、 Fasteners Hot dip galvanized coatings DIN EN ISO 12944-5, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 5: Protective paint systems DASt-Richtlinie 022, Feuerverzinken von tragenden Stahlbauteilen, Deutscher Ausschuss fr Stahlbau (DASt), Dsseldorf 20

19、09 (DASt Code of practice 022, Hot dip galvanizing of structural steel components, German Committee for Steel Construction (DASt), Dsseldorf 2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14713-2 December 2009 ICS 25.220.40; 91.080.10 Supersedes EN ISO 14713:1999English Version Zinc c

20、oatings - Guidelines and recommendations for the protection against corrosion of iron and steel in structures - Part 2: Hot dip galvanizing (ISO 14713-2:2009) Revtements de zinc - Lignes directrices et recommandations pour la protection contre la corrosion du fer et de lacier dans les constructions

21、- Partie 2: Galvanisation chaud (ISO 14713-2:2009) This European Standard was approved by CEN on 18 November 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any

22、alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by

23、 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

24、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR

25、MUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14713-2:2009: EZinkberzge - Leitfden und Empfehlungen zum Schutz von Eisen- und Stahlkonstruktionen vor Korrosion -

26、Teil 2: Feuerverzinken (ISO 14713-2:2009) Contents DIN EN ISO 14713-2:2010-05 EN ISO 14713-2:2009 (E) 2 Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Design for hot dip galvanizing .5 4.1 General5 4.2 Surface preparation.5 4.3 Procedures related to design considerati

27、ons 6 4.4 Design features6 4.5 Tolerances6 5 Design for storage and transport.7 6 Effect of article condition on quality of hot dip galvanizing .7 6.1 General7 6.2 Surface condition.9 6.3 Influence of steel surface roughness on the hot dip galvanized coating thickness9 6.4 Influence of thermal cutti

28、ng processes.9 6.5 Effect of internal stresses in the basis steel.9 6.6 Large objects or thick steels . 10 6.7 Hot dip galvanizing practice 10 7 Effect of hot dip galvanizing process on the article . 11 7.1 Dimensional tolerances on mating thread . 11 7.2 Effect of process heat 11 8 After-treatments

29、 11 Annex A (informative) Preferred designs of articles for hot dip galvanizing. 12 Bibliography. 21 Foreword coatings”, 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 identical text or by endorsement, at

30、the latest by June 2010, and conflicting national standards shall be withdrawn at the latest by June 2010. 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 responsible for identifying any or all

31、 such patent rights. This document supersedes EN ISO 14713:1999. 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, Cyprus, Czech Republic, Denmark, Estonia, Fin

32、land, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 14713-2:2009 has been approved by CEN as a

33、EN ISO 14713-2:2009 without any modification. DIN EN ISO 14713-2:2010-05 EN ISO 14713-2:2009 (E) 3 other inorganic coatings” in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic This document (EN ISO 14713-2:2009) has been prepared by Technical Committee ISO/TC 107 “Met

34、allic and 1 Scope This part of ISO 14713 provides guidelines and recommendations regarding the general principles of design which are appropriate for articles to be hot dip galvanized for corrosion protection. The protection afforded by the hot dip galvanized coating to the article will depend upon

35、the method of application of the coating, the design of the article and the specific environment to which the article is exposed. The hot dip galvanized article can be further protected by application of additional coatings (outside the scope of this part of ISO 14713), such as organic coatings (pai

36、nts or powder coatings). When applied to hot dip galvanized articles, this combination of coatings is often known as a “duplex system”. The guidelines and recommendations in this part of ISO 14713 do not deal with the maintenance of corrosion protection in service for steel with hot dip galvanized c

37、oatings. Guidance on this subject can be found in ISO 12944-5. Specific product-related requirements (e.g. for hot dip galvanized coatings on tubes or fasteners, etc.) will take precedence over these general recommendations. 2 Normative references The following referenced documents are indispensable

38、 for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test m

39、ethods ISO 4964, Steel Hardness conversions ISO 8044, Corrosion of metals and alloys Basic terms and definitions ISO 10684, Fasteners Hot dip galvanized coatings ISO 12944-5, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 5: Protective paint systems EN

40、 10210-1, Hot finished structural hollow sections of non-alloy and fine grain steels Part 1: Technical delivery requirements EN 10219-1, Cold formed welded structural hollow sections of non-alloy and fine grain steels Part 1: Technical delivery requirements DIN EN ISO 14713-2:2010-05 EN ISO 14713-2:

41、2009 (E) 4 EN 10240, Internal and/or external protective coatings for steel tubes Specification for hot dip galvanized coatings applied in automatic plants EN 10346, Continuously hot-dip coated steel flat products Technical delivery conditions 3 Terms and definitions For the purposes of this documen

42、t, the terms and definitions given in ISO 8044 and the following apply. 3.1 hot dip galvanizing formation of a coating of zinc and/or zinc/iron alloys on iron and steel products by dipping prepared steel or cast irons in the zinc melt 3.2 hot dip galvanized coating coating obtained by hot dip galvan

43、izing NOTE The term “hot dip galvanized coating” is subsequently referred to as the “coating”. 4 Design for hot dip galvanizing 4.1 General It is essential that the design of any article required to be finished should take into account not only the function of the article and its method of manufactu

44、re but also the limitations imposed by the finish. Annex A illustrates some of the important design features, some of which are specific to hot dip galvanizing. Some internal stresses in the articles to be galvanized will be relieved during the hot dip galvanizing process and this may cause deformat

45、ion or damage of the coated article. These internal stresses arise from the finishing operations at the fabrication stage, such as cold forming, welding, oxy-cutting or drilling, and from the residual stresses inherited from the rolling mill. The purchaser should seek the advice of the hot dip galva

46、nizer before designing or making a product that is subsequently to be hot dip galvanized, as it may be necessary to adapt the construction of the article for the hot dip galvanizing process. The purchaser should be aware of the two distinct types of hot dip galvanizing and take these distinctions in

47、to account when designing articles: a) hot dip galvanizing after fabrication where, after suitable pretreatment, fabricated iron or steel articles are dipped in a bath containing a zinc melt (see ISO 1461); b) continuous galvanizing where, after suitable pretreatment, sheet materials are continuousl

48、y fed through a zinc melt and the hot dip galvanized sheet materials are then used to fabricate an article (see EN 10346). 4.2 Surface preparation The design and the materials used should permit good surface preparation. This is essential for the production of a high-quality coating (see 6.2). Surfa

49、ces should be free from defects to ensure a coating of good appearance and serviceability. Graphite exposed at the surface of iron castings interferes with wetting by molten metal and those castings that have been annealed may have silica particles in the surface layers which have to be removed in order to obtain a good-quality hot dipped coating. Grit blasting is recommended both before and after annealing. DIN EN ISO 14713-2:2010-05 EN ISO 14713-2:2009 (E) 5 4.3 Procedures related to design